The graph shows the changing levels of hormones during menstruation and ovulation. Which hormone has the most influence on a safe pregnancy?
A.Luteinizing hormone promotes fertility because it spikes the most during ovulation.B.Estradiol promotes fertility because it peaks slightly before ovulation.C.Progesterone promotes fertility because its levels rise during ovulation and immediately after.D.Follicle-stimulating hormone promotes fertility because it is released mostly during ovulation.
Ans. (C).Progesterone promotes fertility because its levels rise during ovulation and immediately after.
Progesterone is a female sex-hormone, produced in the ovaries right after ovulation and its level rise immediately after ovulation (as shown in graph). A thick, and proper uterine lining is important for the implantation of zygote in the uterine wall.
Progesterone has the most influence on a secure pregnancy as it promotes the thickening and maintenance of uterine lining. Low levels of progesterone makes it difficult to get pregnant as zygote cannot implant properly.
Thus, the correct answer is option (C).
What is the name of the set of features that improves the visual appearance of windows?
Would you rather be heterozygous for cystic fibrosis or for huntington's disease? why?
If an ovum is not fertilized _____ production decreases and the ____ is shed
If the ovum is not fertilized estrogen production decreases and the lining of the womb is shed.
Further Explanation:
Female reproductive organ are found in the pelvis region which release egg during menstruation cycle. The menstruation cycle starts with the day one of first menstruation and last at the first day of next menstruation cycle.
The cycle includes three phases;
• The follicular phase
• The ovulatory phase
• The luteal phase
The luteal phase is the part in which change in the hormonal level and fertilization of the egg take place. It will last for twelve to fourteen days. If the egg is fertilized by a sperm, it will attach to the lining of the uterus and the placenta develops. If the ova is not get fertilized with sperm than the lining of the uterus sheds and remove during menstruation. Corpus luteum is formed once the ovum is released from ovary. It helps in secreting the hormones estrogen and progesterone. If the ova don’t get fertilized than the corpus luteum will reduce in size and die and become a small piece of lump. The end of the menstruation cycle resulted in decrease in estrogen and progesterone level and the decrease in progesterone level leads to the shedding of the lining of uterus which is no longer needed.
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• Learn more about after an egg is released from the ovary, the grafian follicle becomes https://brainly.com/question/4189307
• Learn more about human sperm cells and egg cells https://brainly.com/question/1626319
• Learn more about the duration of survival of sperm in the female reproductive tract https://brainly.com/question/9813796
Answer Details:
Grade: High School
Subject: Biology
Chapter: Human Reproduction
Keywords:
Reproductive organ, ovaries, pelvis, fertilized, uterus, menstruation, follicular, ovulatory, luteal, corpus luteum, estrogen, progesterone.
Which organism contributes to soil formation in primary succession? A) lichens B) grass C) small plants D) trees
Why would a student who wants to be a doctor study chemistry?
Which of these is the best method to measure the distance of a star
calculate the variations in the position of the star due to movement of Earth in its orbit
measure the red shift of emitted light and use it in calculations
use doppler effect to calculate the shift in light traveling from star to Earth in summer
use doppler effect to calculate the shift in light traveling from star to Earth in winter
Answer:
calculate the variations in the position of the star due to movement of Earth in its orbit
Explanation:
How does life demonstrate high degree of order?
Life demonstrated high degree of order by showing through reductionism
Atoms→Complex→biological molecule→Sub cellular Organelles→cells→tissues→organs→organ systems→complex organism
Many smaller processes are easy to regulate than one large process. The high order in living system is maintained by processing Energy.
Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, which develop from similar embryonic tissues. these structural similarities are an example of _____.
Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, which develop from similar embryonic tissues. These structural similarities are an example of homologous structure.
What are homologous structures?A homologous structure is an organ or bone that appears in multiple animals, emphasizing physical similarities that demonstrate ancestry from a common ancestor.
In other words, it occurs when bones from very diverse animals appear to be very similar in form or function and appear to be linked. The wing of a bat and the arm of a human are two classic examples of homologous structures.
Both have similar internal bone structures, and their evolutionary origins as mammals are clear.
Therefore, the structural similarities are an example of homologous structure.
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Cube-shaped bones that contain mostly spongy bone are called _____ bones.
Cube-shaped bones that contain mostly spongy bone are called "short" bones.
Irregular Bones: These bones have complex shapes that don't fit into the categories of long, short, or flat bones. They contain mostly spongy (cancellous) bone tissue with a thin outer layer of compact bone. The spongy bone provides strength and support while also being lighter in weight. Examples of irregular bones include the vertebrae (in the spine) and some bones of the skull, such as the sphenoid and ethmoid bones.
Short Bones: Short bones, as the name implies, are roughly cube-shaped bones. Unlike irregular bones, they consist of a thin layer of compact bone surrounding a larger amount of spongy bone. The spongy bone in short bones helps provide shock absorption and distribute forces during weight-bearing activities. Examples of short bones include the bones of the wrist (carpal bones) and ankle (tarsal bones).
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"repeated drug use and/or alcohol use after a period of improvement from substance abuse is called ________."
"Repeated drug use and/or alcohol use after a period of improvement from substance abuse is called addicted."
Further explanation
Addiction is when our body or mind badly wants or needs something to work well. We are called addicts if we have physical dependence and psychological dependence on psychoactive substances, for example, alcohol, tobacco, heroin, caffeine, nicotine. This psychoactive substance will cross the blood-brain barrier after digestion, thus changing the chemical conditions in the brain temporarily.
When addicted to something, someone can get sick if they do not get something that makes them addicted, but the excess of something that can cause their health to decline. Some people who are addicts want to go to a doctor or hospital to cure their addiction, so that they don't get addicted for long (want or need) to drugs.
Someone uses drugs, such as cannabis, ecstasy, methamphetamine, and heroin, for various reasons. Apart from trial and error out of curiosity, there are also those who use illicit goods on the grounds of wanting to join in with friends or to escape from various problems, stress, and anxiety.
There are several factors that affect a person who is more vulnerable to getting caught using drugs, including:
Family history of drug addiction History of abuse or not getting attention in the family Mental problems such as depression and anxiety Previous history of drug use Associations and an unhealthy environment
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Details
Class: High School
Subject: Biology
Keywords: Drug, Addict, Psychoactive
What organs control water and mineral ion levels
When babies engage in physical activity or use language, some synaptic connections will be strengthened, while the unused ones are replaced by other pathways or disappear. a neuroscientist would identify this process as:?
The process of strengthening and weakening of synaptic connections based on their usage is known as Synaptic Plasticity, central in learning and adaptation. Relatedly, Neurogenesis involves generation of new neurons, impacting learning and memory. Both contribute to Neuroplasticity.
Explanation:A neuroscientist would identify the process you've described as Synaptic Plasticity. Synaptic plasticity refers to the ability of synapses to strengthen or weaken over time, based on the amount of activity they are exposed to. This process is intricately linked with our ability to learn, remember, and adapt. It is the core mechanism of how our brains interpret and respond to the world around us. For instance, when a baby uses language, the synapses associated with these actions strengthen. Contrarily, those that aren't utilized as often will weaken, allowing other pathways to take over or causing them to disappear completely.
Another related concept is Neurogenesis, the process through which new neurons or nerve cells are generated. This can also impact learning and memory since new neurons develop in the hippocampus, a region of the brain involved in these processes, every day. Both synaptic plasticity and neurogenesis form the basis of Neuroplasticity, the ability of our brain to reorganize itself and form new neural connections throughout life.
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In a protein-deficient state, one cannot make _____ to fight off infectious agents.
Which of the following will help prevent further shin split injury?
Changing to play on a hard surface
resting until the discomfort goes away
finishing by taking off your footwear
or moving more quickly to minimize the discomfort?
Answer:
I think it's B
Explanation:
You are dispatched to a priority assignment involving a motor vehicle collision. once at the scene, you find one patient and determined that she is stable. this condition is no longer a:
life is very important
What is the level of risk associated with rejecting a true null hypothesis called?
Mercury is 0.39 AU from the sun. What is its distance from the sun in kilometers?
Final answer:
To find Mercury's average distance from the Sun in kilometers, multiply its distance in AU (0.39) by the number of kilometers in one AU (149,597,870.7), resulting in approximately 58.3 million kilometers.
Explanation:
The student has asked to convert the average distance from Mercury to the Sun from astronomical units (AU) to kilometers (km). An astronomical unit is the average distance between the Earth and the Sun, which is about 149,597,870.7 kilometers. Mercury's distance from the Sun is given as 0.39 AU. To find this distance in kilometers, we multiply the number of astronomical units by the number of kilometers in one AU:
0.39 AU × 149,597,870.7 km/AU = 58,343,169.373 kilometers.
Therefore, Mercury's average distance from the Sun is approximately 58.3 million kilometers. It's worth noting that due to the high eccentricity of Mercury's orbit, the actual distance varies considerably, from about 46 million kilometers at perihelion to 70 million kilometers at aphelion.
What two categories did Greek philosopher Aristotle use to classify living organisms ?
Answer: those with blood and with out
Explanation:
The minute ventilation is _______. the minute ventilation is _______. the amount of air forcefully exhaled in 1 minute calculated by multiplying the rate of respiration times tv the amount of air left in the lungs after 1 minute the amount of air forcefully inhaled in 1 minute
Minute ventilation is the air forcefully exhaled in one minute and is calculated by multiplying the respiratory rate (RR) by the tidal volume (TV). Therefore, option A is correct.
The respiratory rate refers to the number of breaths taken per minute. It represents the frequency at which a person inhales and exhales. The unit typically used for respiratory rate is breaths per minute (bpm).
Tidal volume represents the air inhaled or exhaled in a single breath during normal breathing. It is the air moved in and out of the lungs with each respiratory cycle. The unit typically used for tidal volume is milliliters (mL) or liters (L).
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A client on the psychiatric unit sits alone most of the day. the nurse approaches the client. as the nurse gets approximately 3 feet away, the client lets out a string of profanity and shouts, "leave me alone; i don't want to talk to you!" what is the most appropriate response by the nurse?
The nurse should respectfully acknowledge the psychiatric client's wish for solitude, assuring them of available support, whilst closely monitoring for signs of escalating agitation or self-harm.
Explanation:In this scenario, the most appropriate response by the nurse should be one that maintains respect for the client's boundaries while ensuring their safety. The nurse can say something like, "I understand that you want to be alone and I respect that. If you need anything or feel like talking, I'm here to support you." This approach establishes a caring presence while respecting the client's autonomy and personal space, key features of psychiatric nursing.
The nurse must also continuously observe the client's behavior for any signs of escalated agitation or potential self-harm and be prepared to intervene as necessary. Emphasis must be placed on active listening, patience, and empathetic understanding in order to build trust and rapport with the client. Recognizing and respecting the client's boundaries is also crucial to promoting a therapeutic and safe environment.
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Which country of east asia has the highest total fertility rate?
The complex carbohydrate form of a sugar that is stored in the liver and muscles is
The complex carbohydrate form of a sugar that is stored in the liver and muscles is polysaccharides. They are long chain sugar units and are polymers of monosaccharides. Polysaccharides were room form of carbohydrate in human and some animals, similar in construction to starch but more branches, can break off a glucose simply with branches because enzymes start at the outside and undetectable in meats because glycogen breaks down as soon as animal is slaughtered. The three main polysaccharides related to the human nutrition includes the following: 1. Starch that is an energy source obtained from plants. 2. Cellulose that is structural polysaccharides in plants and when consumed acts as a dietary fiber. 3. Glycogen that is a storage form of glucose in the human liver and muscles.
Glycogen is the complex carbohydrate that is stored in the liver and muscles, serving as a primary form of energy storage in humans and other animals.
Explanation:The complex carbohydrate form of a sugar that is stored in the liver and muscles is glycogen. Glycogen is a polysaccharide of glucose, serving as a vital form of energy storage in both animals and fungi. In humans, glycogen gets synthesized and stored predominantly in liver and muscle cells. When there is a need for energy, glycogen can be broken down into glucose during a process called glycogenolysis, which provides fuel for cells. Notably, glycogen helps maintain glucose homeostasis in the bloodstream, being broken down to supply glucose when blood glucose levels dip too low or being synthesized from excess glucose when blood glucose levels are too high.
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Scientific investigations often lead to the formulation of new scientific questions. The observations Charles Darwin made during his time aboard the H.M.S. Beagle prompted him to ask which question?
Do living organisms change over time and, if so, how?
Are the finches of the Galapagos Islands the same as those on the mainland?
Can selective breeding occur in nature?
Can the accumulation of gradual changes in a population lead to a new species over time?
The answer is Do living organisms change over time and, if so, how?
________ cells provide cell-mediated immunity. ________ cells provide cell-mediated immunity. cd8 t suppressor t memory b cytotoxic t cd4 t
CD8 T cells provide cell-mediated immunity by directly attacking and killing infected cells. CD4 T cells coordinate and regulate the immune response, and can also become memory T cells. CD8 T suppressor T cells help regulate the immune response by inhibiting the activity of other immune cells.
Explanation:CD8 T cells, also known as cytotoxic T cells or killer T cells, provide cell-mediated immunity by directly attacking and killing infected cells in the body. They recognize and bind to antigen-presenting cells that display fragments of pathogens on their surface, and release cytotoxic proteins to destroy the infected cells.
CD4 T cells, also known as helper T cells, provide cell-mediated immunity by coordinating and regulating the immune response. They recognize antigens presented by antigen-presenting cells and activate B cells to produce antibodies or stimulate CD8 T cells to kill infected cells. CD4 T cells can also become memory T cells, which provide long-term immunity and remember previous infections.
CD8 T suppressor T cells help regulate the immune response by inhibiting the activity of other immune cells. They play a role in preventing excessive immune responses that can lead to autoimmune diseases or allergies.
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T cells provide cell-mediated immunity. Among them cytotoxic T cells destroy virus-infected cells, helper T cells facilitate antibody and cell-mediated immune responses, and suppressor T cells keep the immune response balanced. Memory T cells recognize the pathogen upon future exposure and trigger rapid immune responses.
Explanation:The cells that provide cell-mediated immunity are T cells or T lymphocytes, a type of white blood cell. There are different types of T cells with unique functions: cytotoxic T cells destroy virus-infected cells, helper T cells activate antibody and cell-mediated immune responses, and suppressor T cells deactivate T and B cells as needed to keep the immune response in balance. Furthermore, memory T cells, generated during primary adaptive immune response, play a critical role in recognizing the pathogen upon subsequent exposure and mount rapid responses.
Cytotoxic T cells are particularly crucial against viral infections as viruses replicate within cells where they are shielded from contact with circulating antibodies. On the other hand, memory T cells persist for a long time, even a lifetime, allowing for a rapid secondary adaptive response upon re-exposure to the same pathogen. This helps in preventing symptoms and disease.
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Tears, saliva, and vaginal secretions are rich in ________ and _________ that break down and destroy many microorganisms.
A nurse is caring for a client on the second day postpartum. the client informs the nurse that she is voiding a large volume of urine frequently. which factor should the nurse identify as a potential cause for urinary frequency?
In the lysogenic cycle _____. host dna is destroyed and viral dna is replicated a bacterium replicates without passing viral dna to its daughter cells viral dna is destroyed and host dna is replicated a bacterium divides once before the lytic cycle is initiated viral dna is replicated along with host dna
In the lysogenic cycle, viral DNA is replicated along with the host DNA. Therefore, option D is correct.
The lysogenic cycle is one of the two primary cycles in viral replication. In this cycle, viral DNA integrates into the host cell's DNA after the virus infects a host cell. Then it takes over the host's machinery and causes cell lysis. This integrated viral DNA is referred to as a prophage.
The integrated viral DNA (prophage) is replicated along with the host cell's DNA during normal cellular replication. The viral DNA is passed on to daughter cells each time the host cell divides.
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A medical specialty that is particularly concerned with malignant tumors and their treatment is called:
Oncology!. Oncology is a branch of medicine that deals with the prevention, diagnosis, and treatment of cancer or tumors.
A client comes to the clinic for a 6-week postpartum checkup. she confides that she is experiencing exhaustion that is not relieved by sleep and feelings of failure as a mother because the infant "cries all of the time." when asked whether she has a support system, she replies that she lives alone. which response would provide the most accurate information