Medicine Middle School

pernicious anemia produces red blood cells that are ________
and
________deficiency contributes to pernicious anemia​

Answers

Answer 1

Pernicious anemia produces red blood cells that are large and vitamin B12 deficiency contributes to pernicious anemia.

Explanation:

When there is a lack of intrinsic factor, secreted in the parietal cells of the gastric mucosa or the stomach lining, vitamin B12 absorption from the stomach is affected.

Vitamin B12 is one of the key factors responsible for normal synthesis and maturation of fully functional red blood cells (RBCs).

The main function of the RBCs is to carry oxygen through hemoglobin to all parts of the body. In order to transport oxygen, the RBCs must be mature with normal shape (concave center and circular shape) and size.

When there is a lack of vitamin B12, the RBCs are not matured and immature, megaloblastic, large, irregularly-shaped red blood cells are formed and circulate in the blood. This also leads to macrocytosis of RBCs.

These cannot function as normal mature blood cells because of the irregular shape and cannot carry hemoglobin to transport oxygen.

Answer 2
Final answer:

Pernicious anemia produces red blood cells that are larger than usual, which is known as macrocytic. This condition is primarily caused by a vitamin B12 deficiency, which affects the normal formation and function of red blood cells.

Explanation:

Pernicious anemia produces red blood cells that are larger than normal, a characteristic described as macrocytic. This type of anemia is primarily caused by a vitamin B12 deficiency. Normal red blood cells (RBCs) are termed normocytic, but when B12 levels are insufficient, the body struggles to correctly form RBCs, resulting in larger cells. This vitamin is crucial to the production of healthy RBCs, and a deficiency may occur due to an inability to properly absorb B12 from food, often linked to an absence of intrinsic factor – a protein produced in the stomach.

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Related Questions

What are the components (domains) of a comprehensive mental status

Answers

The components of the comprehensive Mental Status Exam is explained below.

Explanation:

MSE  is an evaluation of prevailing mental capacity through evaluation of general appearance, action, any strange or unusual beliefs and observations (eg. hallucinations), mood, and all aspects of cognition(eg. memory).

The purpose of Mental Status Exam is to obtain the information of the Patient's cerebral state which when joined with historical and biographical information of psychiatric records that helps clinician to make accurate analysis and formulation required for treatment.

Components:

Level of Consciousness.

Appearance and General Behavior.Examiner's Reaction to the Patient.Speech and Motor Activity.Thought and Perception.Affect and Mood.Structured Examination of Cognitive Abilities.Attitude and Insight.

Can someone explain to me what an independent/dependent/control variable is in Psychology? I keep second guessing myself!

A researcher wants to know if memory is better for written words or spoken words. The researcher presents on a computer screen a list of 20 words to the first 30 volunteers/participants to arrive to the lab. The words are presented at a rate of one word per second. After the presentation of the list, each participant of the group is given 5 minutes to write down as many words from the list in any order. The researcher then presents the same list of words at the same rate over headphones to the next 30 volunteers/participants to arrive to the lab. After the auditory presentation of the list, each participant of the group is provided 5 minutes to write down as many words they can recall in any order.

Answers

The control variable would be the list of words given and time given, the independent variables are spoken and written words, and the dependent variable amount of words recalled. Essentially the control variables are things that are the same across the board, the independent variable the thing(s) you are manipulating to illicit a change in your dependent variable

The independent variables are spoken and written words, while the dependent variable is the number of words recalled. The control factors are the list of words supplied and the length of time given.

What are the independent and dependent variables in Psychology?

An independent variable (IV) is a variable that a researcher manipulates to see if it affects another variable in a positive or negative way. The dependent variable (DV) is the other variable that is measured and assumed to depend on the independent variable (IV).

The cause is the independent variable. Its value is unaffected by other research factors. The effect is the dependent variable. Changes in the independent variable affect its value.

The variable that the experimenter controls is the independent variable. The variable that adapts to the independent variable is known as the dependent variable. The two factors could be connected through cause and effect. The dependent variable is impacted by changes to the independent variable.

Essentially the control variables are things that are the same across the board, and the independent variable is the thing(s) you are manipulating to illicit a change in your dependent variable.

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