Answer:
Metaphysis
Explanation:
The tip of a long bone is known as epiphysis and the shaft of a long bone is named as diaphysis.
Metaphysis is located between the tip and shaft of a long bone. Metaphysis tissue consists of epiphyseal plate, fibrous and bony component. Metaphysis undergoes ossification near the diaphysis. The metaphysis of long bone of children is more prone to the osteomyelitis condition.
Which of the following is a function of the spleen?
a. Cleanses the interstitial fluid
b. Circulates the lymph
c. Removes worn out red blood cells
d. Stores platelets
e. Both a and b
f. Both c and d
g. Both a and c
h. Both b and d
Answer:
E
Explanation:
Blood passes by the spleen so that defective blood cells are ‘sieved out’ and recycled. The hemoglobin is taken to the bone marrow where it is used to make new red blood cells. The spleen is also considered as part of the lymphatic system because lymph fluid passes through the spleen that ‘filters out’ foreign substances, such as bacteria and viruses from infections. It acts like a big lymph node.
The area of a neuron that contains the nucleus and other organelles is called the ____________.
Answer: Cell body, Soma, or Perikaryon.
Explanation:
Neurons can vary in morphology but they keep 4 well-defined regions with distinct functions, they are: the Axon, the Axon terminals, Dendrites, and the cell body. To answer the question we are going to analyze the cell body. Because it contains the nucleus and other organelles, in this region we have the synthesis of practically all neuronal proteins and membranes, which gives it importance. Special transport processes involving microtubules move proteins and membranes from their sites of synthesis in the cell body down the length of the axon to the terminals.
Part of the hamstrings
a. Zygomaticus
b. Semitendinosus
Final answer:
The semitendinosus is part of the hamstring group, which also includes the biceps femoris and semimembranosus, and is responsible for flexing the knee. So the correct option is b.
Explanation:
Among the options provided, b. Semitendinosus is part of the hamstrings. The posterior compartment of the thigh includes muscles that are responsible for flexing the leg and extending the thigh, known as the hamstring group. These muscles are the biceps femoris, semitendinosus, and semimembranosus. The tendons of these muscles form the popliteal fossa, which is a diamond-shaped space at the back of the knee. On the other hand, the zygomaticus major muscle is a paired facial muscle that extends between the zygomatic bone and the angle of the mouth.
List the six primary sutures of the skull and the bones that articulate at each suture.
The six primary sutures of the skull are the coronal, sagittal, lambdoid, squamous, pterion, and fontanelles.
Explanation:The six primary sutures of the skull are:
Coronal suture: It joins the frontal bone to the right and left parietal bones.Sagittal suture: It unites the right and left parietal bones.Lambdoid suture: It joins the occipital bone to the right and left parietal and temporal bones.Squamous suture: It unites the squamous portion of the temporal bone with the parietal bone.Pterion: It is a small suture line region that unites the frontal bone, parietal bone, squamous portion of the temporal bone, and greater wing of the sphenoid bone.Fontanelles: These are areas of connective tissue between the bones in newborns and infants.Learn more about Skull sutures here:https://brainly.com/question/30403243
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Hemoglobin is the protein that transports O2 through the blood from the lungs to the rest of the body. In doing so, each molecule of hemoglobin combines with four molecules of O2. If 1.30 g of hemoglobin combines with 1.99 mL of O2 at 37°C and 736 torr, what is the molar mass of hemoglobin?
Final answer:
By calculating the number of moles of oxygen and using the molar ratio of hemoglobin to oxygen, we can find the molar mass of hemoglobin to be 2159.77 g/mol.
Explanation:
Hemoglobin is a protein found in red blood cells that transports oxygen from the lungs to the rest of the body. Each molecule of hemoglobin can combine with four molecules of oxygen. To find the molar mass of hemoglobin, we can use the given information:
Mass of hemoglobin = 1.30 gVolume of oxygen = 1.99 mLTemperature = 37°CPressure = 736 torrTo calculate the molar mass, we need to use the ideal gas law equation PV = nRT. Rearranging the equation, we get n = PV/RT, where n is the number of moles of the gas, P is the pressure, V is the volume, R is the ideal gas constant, and T is the temperature in Kelvin.
First, let's convert the temperature to Kelvin: 37°C + 273.15 = 310.15 K.
Next, let's convert the volume to liters: 1.99 mL ÷ 1000 = 0.00199 L.
Now we can calculate the number of moles of oxygen using the ideal gas law: n = (736 torr)(0.00199 L) / (0.08206 L·atm/mol·K)(310.15 K) = 0.002405 mol.
Since each molecule of hemoglobin combines with four molecules of oxygen, the molar ratio of hemoglobin to oxygen is 1:4. Therefore, the number of moles of hemoglobin is 0.002405 mol ÷ 4 = 0.000601 mol.
Finally, to find the molar mass of hemoglobin, we divide the mass of hemoglobin by the number of moles: Molar mass = 1.30 g ÷ 0.000601 mol = 2159.77 g/mol.
can anyone help me in biology evolution ?
Answer:
1,4,5 is correct
Explanation:
To look at which species is more closely related to another, look at the number of intermediate ancestors between each species. The lesser the number of ancestor intermediates, the closer the relatedness the species is to the common ancestor.
As long as the species is in the phylogenetic tree, the species may share a common feature with the common ancestor
Which of the following plasma proteins is responsible for attacking pathogens?
A. globulins
B. antibodies
C. albumins
D. fibrinogen
Answer:
The answer would be Antibodies.
Hope this helps!
The Z disc forms the end _____ of a sarcomere.
Answer:
The best answer to the question: The Z disc forms the end____ of a sarcomere, would be: the end border, or the point where sarcomeres join, within a muscle fiber.
Explanation:
Concretely, a Z disc is the boundary line that divides sarcomeres within a muscle fiber. They are the bordes between sarcomeres and they contain the most important molecule, actin, which forms the thin filaments essential for muscle tissue movement. This actin molecule, present along the Z discs, under the correct stimulation and circumstances, will bind to myosin and thus movement will be possible.
The Z disc forms the end line of a sarcomere, playing a critical role in muscle contraction by anchoring thin filaments and working in conjunction with thick filaments.
The Z disc forms the end line of a sarcomere. Sarcomeres are the functional units of skeletal muscle and are defined as the space between two consecutive Z discs. These structures play a critical role in muscle contraction and relaxation. Thin filaments, composed of actin and its troponin-tropomyosin complex, extend from the Z discs towards the center of the sarcomere. Meanwhile, the thick filaments, anchored at the M line, work in conjunction with the thin filaments to facilitate muscle contraction. During this process, as the muscle contracts, the Z discs move closer together, reducing the length of the sarcomere. This dynamic interaction between the Z discs, thin filaments, and thick filaments is fundamental to the mechanism of muscle movement.
Name the membranous encasement surrounding the brain.
Answer:
Meninges
Explanation:
Meninges refer to the protective membranes that surround the brain. Dura mater is the outer most meninx which forms a tough and fibrous cover. Pia mater is the deepest meninx and represent the delicate layer of connective tissue. Present between pia mater and dura mater is the arachnoid mater. Together, dura mater, arachnoid mater and pia mater make a membranous encasement to cover the brain and protect it from any injury.
The membranous encasement surrounding the brain, known as the meninges, consists of three layers called the dura mater, arachnoid mater, and pia mater. Each layer serves to protect the brain and spinal cord.
Explanation:The membranous encasement surrounding the brain is called the meninges. It is composed of three layers of connective tissue: the dura mater, the arachnoid mater, and the pia mater.
The dura mater is the outermost layer and it serves as a strong protective sheath over the entire brain and spinal cord. It is anchored to the inner surface of the cranium and vertebral cavity.
The arachnoid mater forms a loose sac around the Central Nervous System (CNS) and beneath it is a thin, filamentous mesh called the arachnoid trabeculae, which resembles a spider web, hence the layer's name.
The pia mater is the innermost layer, fitting into every convolution of the CNS, and directly adjacent to the surface of the CNS itself.
Overall, these three layers serve to protect the brain and spinal cord from injury and also facilitate the circulation of cerebrospinal fluid.
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Red bone marrow, thymus; sites where stem cells become immunocompetent
A. Chyle
B. Lacteal
C. Lymph
D. Primary lymphatic organs
E. Secondary lymphatic organs
Answer:
Primary lymphatic organs
Explanation:
Primary lymphoid organ is the site of formation and maturation of lymphocyte. These lymphoid organs provide proper environment for the maturation of immune cells.
The primary lymphoid organ are red bone marrow and thymus. B- cells born and mature in the bone marrow. T cells from the site of origin migrate to the thymus for the maturation.
Thus, the correct answer is option (D).
The red bone marrow and the thymus are considered primary lymphatic organs because they are the places where stem cells differentiate and mature into immunocompetent cells. The red bone marrow is where all blood cells originate and the thymus is where T lymphocytes mature.
Explanation:The red bone marrow and the thymus are both considered to be primary lymphatic organs. This is because they are the locations where stem cells differentiate and become immunocompetent, or capable of responding to specific antigens to defend the body.
Specifically, the red bone marrow is where all blood cells, including lymphocytes, originate. The thymus, on the other hand, is where T lymphocytes mature. These organs fit the definition of primary lymphatic organs more than chyle, lacteal, lymph, or secondary lymphatic organs, as stem cells don't become immunocompetent in these locations.
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Define Tidal Voulume and give its amount in ml:
Answer:
Amount of air inhaled or exhaled per breathing stroke is called as tidal volume. Tidal volume is 400 ml for women while for men it is 500 ml.
Explanation:
In respiration, tidal volume is defined as the volume of air that a person inhales or exhales in one stroke of normal breathing.
The tidal volume varies in adult men and women. In resting condition, tidal volume is 400 ml for women while for men it is 500 ml.
This tidal volume varies with the requirement of the body. During intense physical exercise the amount of gas intake increases in order to full fill the requirement of body and hence the tidal volume increases.
The formation of memories, the ability to make predictions, the mechanics of language, complex thought and analysis is primarily due to:
a. Corpus collosum
b. Thalamus
c. Cerebrum
d. Cerebellum
e. Arbor vitae
Answer:
c. Cerebrum
Explanation:
The cerebrum is the part of the brain that is responsible for processing the sensory information, critical thinking and learning. It stores this information and processing centers make predictions for various conditions. The Wernicke’s area and Broca’s area represent the areas of language present in the cerebral cortex and are associated with language and speech.
An individual with type B blood can receive a blood transfusion of type B blood or?
A) type AB blood
B) type O blood
C) any Rh negative blood type
D) None of the above. They can only receive type B blood.
Answer:
The answer is B): type O blood.
Explanation:
If you have a B marker, your body will make A antibodies. Remember that an antibody is a blood protein that's produced in response to an antigen. Therefore, you can get a blood transfusion from someone with Type B or Type O blood, but not Type A or Type AB blood.
The Occlusal refers to what part of the tooth?
a. Surface of the tooth that faces away from the midline
b. Surface of the tooth that face the tongue
c. Chewing surface of all Posterior teeth
d. Biting edge of all Anterior teeth
Answer: c. Chewing surface of all Posterior teeth.
Explanation:
Teeth in animal and human body plays important role in beginning the simplification of complex food entity inside the mouth. It exhibit various surfaces for various purposes like cutting, chewing, and grinding.
Occlusal surface refers to the surface of the posterior tooth which performs the function of chewing and grinding.
Define metabolism, catabolism, and anabolism.
Hello There!
METABOLISM - In an organism, the metabolism converts food into energy. Another important thing it does is it gives you the energy you need every day in life.
CATABOLISM - This is the break down of molecules that are very small. Cells need nutrients because inside them, they contain energy. Catabolic reactions release the energy and then makes all the different substances available.
ANABOLISM - This is the building of organic compounds. Complex molecules are synthesized from molecules that are way more basic.
What is a metabolic syndrome? Explain in details.
Answer:
Metabolic Syndrome
Explanation:
Metabolic syndrome is a cluster of conditions that occur together, increasing your risk of heart disease, stroke and type 2 diabetes. These conditions include increased blood pressure, high blood sugar, excess body fat around the waist, and abnormal cholesterol or triglyceride levels.
Varieties of plants in which self-fertilization produces offspring that are identical to the parents are referred to as A) hybrids. B) the F2 generation. C) monohybrid crosses. D) true-breeding.
True-breeding is the term used for plant varieties where self-fertilization produces offspring identical to the parents. They always pass down identical phenotypes for a specific trait when self-fertilized or mated with another true-breeding organism. Other options, hybrids, F2 generation, and monohybrid crosses, are different genetics concepts.
Explanation:The varieties of plants that have the capacity for self-fertilization to produce offspring identical to the parents are referred to as true breeding. This term, true-breeding, is used in genetics to describe organisms that for a specific trait, always pass down identical phenotypes to offspring, when self-fertilized or mated with another true-breeding organism. Other options listed, hybrid, F2 generation, and monohybrid crosses are different concepts. Hybrids are offspring resulting from crossbreeding, the F2 generation represents the second filial generation, and monohybrid crosses represent the cross between two organisms with different variations for a single trait.
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True-breeding plants are varieties of plants in which self-fertilization produces offspring that are identical to the parents.
Explanation:Plants in which self-fertilization produces offspring that are identical to the parents are referred to as true-breeding plants. True-breeding plants are those that consistently produce offspring with the same characteristics as the parents, and this is achieved through self-fertilization. For example, in one of Mendel's experiments, he crossed true-breeding plants with violet flowers with true-breeding plants with white flowers, and the resulting hybrids in the F1 generation had violet flowers, while the F2 generation had approximately three-quarters of the plants with violet flowers and one-quarter with white flowers.
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Three main types of air pollution produced by power plants place in the georgia
Suppose that a thin-layer chromatography plate the solvent front migrates a distance of 14 cm, and two steroid spots move distances of (a) 6 cm and (b) 12 cm. Calculate the Rf values for each steroid.
Answer:
A) [tex]RF = 0.428[/tex]
B) [tex]RF = 0.857[/tex]
Explanation:
RF value in thin-layer chromatography plate is defined as the ratio of distance moved by the steroid spot (A) to the distance migrated by solvent front(B)
Hence, mathematically
[tex]RF = \frac{A}{B}[/tex] ------Equation (A)
a) Here [tex]A = 6[/tex] cm and [tex]B = 14[/tex]cm
Substituting the given values in above equation, we get -
[tex]= \frac{6}{14} \\= 0.428\\[/tex]
b) Here [tex]A = 12[/tex] cm and [tex]B = 14[/tex]cm
Substituting the given values in above equation, we get -
[tex]= \frac{12}{14} \\= 0.857\\[/tex]
The Rf values for the two steroids based on their migration distances in thin-layer chromatography are calculated to be 0.4286 for steroid (a) and 0.8571 for steroid (b).
Explanation:The question involves calculating the Rf values for two steroids based on their migration distances in thin-layer chromatography (TLC). The Rf value, which stands for retention factor, is calculated by dividing the distance the compound has traveled by the distance the solvent front has traveled.
For steroid (a) with a migration distance of 6 cm and a solvent front of 14 cm, the Rf value is calculated as:
Rf value for steroid (a) = distance migrated by steroid (a) / distance migrated by solvent front = 6 cm / 14 cm = 0.4286
For steroid (b) with a migration distance of 12 cm:
Rf value for steroid (b) = distance migrated by steroid (b) / distance migrated by solvent front = 12 cm / 14 cm = 0.8571
The internal iliac arteries supply blood to the
A. diaphragm.
B. urinary bladder and rectum.
C. lower leg.
D. spleen.
E. reproductive organs.
The internal iliac arteries supply blood to the lower leg.
The corpus luteum will
a. degenerate into a corpus albicans if fertilization does not occur.
b. remain active if fertilization occurs.
c. produce luteinizing hormone to stimulate the uterus to enter the secretory phase.
d. A&B
e. A,B, & C
Answer:
Option (D).
Explanation:
Corpus luteum is a cluster of cell mass present in the ovary. Corpus luteum release hormones and play an important role in the female reproductive system.
Corpus luteum is degenerated into the corpus albicans if the egg is not fertilized by the sperm. During early pregnancy, corpus luteum releases the hormone progesterone. After 10 weeks of pregnancy corpus luteum starts decreasing in size.
Thus, the correct answer is option (D).
Describe the function of Occipital lobe.
Answer:
Each side of your brain contains four lobes. The frontal lobe is important for cognitive functions and control of voluntary movement or activity. The parietal lobe processes information about temperature, taste, touch and movement, while the Occipital lobe is primarily responsible for vision.
Explanation:
Occipital lobe is primarily responsible for vision.
The occipital lobe is located at the back of the brain and is primarily involved in vision. It processes visual information and helps in recognizing and identifying the visual world.
Explanation:The occipital lobe is located at the back of the brain and it is primarily involved in vision. It is responsible for processes such as seeing, recognizing, and identifying the visual world. The occipital lobe contains the primary visual cortex, which interprets incoming visual information.
The occipital lobe is one of the four major lobes of the cerebral cortex in the brain. It is located at the back of the brain, behind the parietal and temporal lobes. The occipital lobe is primarily responsible for processing visual information and is essential for interpreting and making sense of the visual world. It contains several important structures, including the primary visual cortex, which is involved in receiving and processing visual stimuli from the eyes.
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What is the function of the prostate gland
Answer:
The prostate gland is a male reproductive organ whose main function is to secrete prostate fluid, one of the components of semen. The muscles of the prostate gland also help propel this seminal fluid into the urethra
Explanation:
Makes some of the liquid in semen. Also helps to regulate urine flow. Common site of male cancer.
What is the osmolarity of a solution created by mixing 3 millimoles of MgCl2 into 1 liter of pure water?
Answer:
The osmolarity of a solution is 0.003
Explanation:
Osmolarity may be defined as the the number of solutes per volume of solution in litres.
The osmolarity of a solution can be calculated as follows:
[tex]Osmolarity=\frac{\text{No. of solute}}{\text{Volume of solution} (l)} [/tex]
Here, No. of moles = 3 millimoles= 0.003 moles and volume = 1 liter.
[tex]Osmolarity= \frac{0.003}{1}[/tex]
=0.003.
Hence, the osmolarity of a solution is 0.003.
Which statement is false concerning lactic acid?
a. It is formed during fast glycolysis
b. It is formed when hydrogens combine temporarily with pyruvate
c. It can diffuse into the blood and be carried away from the site of production
d. It is a by-product of a high rate of protein breakdown
Answer:
is formed when hydrogens combine temporarily with pyruvate..Glycolysis is the metabolic process that takes place in the cytoplasm of the cell. The glycolysis can undergo aerobic or anaerobic respiration pathways depending on the requirements.
The correct answer is:
Option D. It is a by-product of a high rate of protein breakdown
The lactic acid is the end product of glycolysis during anaerobic respiration.
This can be explained as:
Glycolysis is one of the pathways of cellular respiration, which yields lactate in anaerobic conditions.Lactic acid is formed when two pyruvates ionize under anaerobic conditions. The NADH+ will be reduced to H+. Lactate can easily be diffused in the blood, cells, or mitochondria, and thus, can be carried away from the site of productions. The by-products of glycolysis involve lactic acid and pyruvate in anaerobic and aerobic conditions, respectively.
Thus, the correct answer is Option D.
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What are the two main types of bone tissue?
Which brain area is considered to be the integrating center for homeostasis?
a. hypothalamus
b. thalamus
c. pituitary gland
d. brain stem
e. medulla
Answer:
A
Explanation:
The hypothalamus is a portion of the brain particularly concerned with homeostasis; it influences the action of the medulla oblongata, a lower part of the brain, the autonomic nervous system, and the pituitary gland.
The hypothalamus is the brain area that is crucial in maintaining homeostasis. It regulates many bodily functions to keep a stable internal environment in response to changes in external conditions.
Explanation:The brain area that is considered to be the integrating center for homeostasis is the hypothalamus. Homeostasis refers to the body's ability to maintain a stable internal environment despite changes in external conditions. The hypothalamus plays a crucial role in homeostasis as it regulates various bodily functions including temperature, thirst, hunger, sleep, mood and the release of hormones from the pituitary gland. Examples of its functioning can be seen when body temperature rises, and it triggers sweat to cool down the body, or when it senses low water volume in the blood and causes a feeling of thirst, driving us to drink water.
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This is an abnormally low level of platelets.
A. thrombocytes
B. megakaryocytes
C. thrombocytosis
D. thrombocytopenia
Answer: D. thrombocytopenia
Explanation:
Thrombocytopenia is a condition that is characterized by abnormally low levels of thrombocytes (platelets) in the liquid blood. The condition is either acquired or inherited. The thrombocyte count may go below 50,000 per microliter which is extremely low.
The patients with this condition generally show no symptoms. Some individuals may experience external bleeding like nosebleeds, and bleeding gums. Some may experience spontaneous bleeding under the skin.
Red blood cells (a good, colorful example of an animal cell type) when placed in pure water swell up and eventually explode. Why would these cells swell up? What does this tell us about the solute concentration inside the cell compare with the pure water? Why do these cells eventually explode?
Answer:
When red blood cells are placed inside pure water they normally swell up and eventually explode. Red blood cells in pure water swell up because the pure water enter in the red blood cells by mean of osmosis. The water molecules are able to enter the red blood cells because the salt concentration inside the red blood cells is more than that of the pure water.
As water continue to move inside the cells, the cell swell up and eventually burst because the internal pressure inside the cell is greater than the external pressure, therefore the cell membrane become ruptured and eventually burst.
Orientation preference of straight-line stimuli across the primary visual cortex is arranged in a _______________ pattern.
a) cross
b) pinwheel
c) square
d) diffuse
Answer:
pinwheel
Explanation:
Orientation preference in the primary visual cortex is a prominent feature of higher mammals. The neurons are arranged in the fix orientation in a primary visual cortex.
The orientation map has analysed that there are pinwheel like orientation are arranged in the ordered fashion. Orientation preference of straight-line stimuli across the primary visual cortex is arranged in pinwheel pattern.
Thus, the correct answer is option (b).