BIO 1100 (D203) Fundamentals of Anatomy & Physiology FA (Qns & Ans) 2025

D203 BIO 1100

Fundamentals of Anatomy & Physiology

FA Review (Qns & Ans)

2025



1. Which of the following structures is responsible for the
production of cerebrospinal fluid (CSF)?
a) Cerebral cortex
b) Choroid plexus
c) Thalamus
d) Pituitary gland


Correct ANS: b) Choroid plexus


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, Rationale: The choroid plexus is a network of blood vessels
located in the ventricles of the brain that produces cerebrospinal
fluid.


2. What is the primary function of the sarcoplasmic reticulum in
muscle cells?
a) Generate ATP
b) Store and release calcium ions
c) Produce myofibrils
d) Transmit nerve impulses


Correct ANS: b) Store and release calcium ions


Rationale: The sarcoplasmic reticulum is responsible for
storing and releasing calcium ions, which are essential for muscle
contraction.


3. Which hormone is primarily responsible for regulating blood
calcium levels?
a) Insulin
b) Cortisol
c) Parathyroid hormone (PTH)

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, d) Thyroxine


Correct ANS: c) Parathyroid hormone (PTH)


Rationale: Parathyroid hormone regulates blood calcium
levels by increasing calcium absorption in the intestines, reducing
calcium excretion in the kidneys, and releasing calcium from
bones.


Fill-in-the-Blank Questions
4. The __________ valve prevents backflow of blood from the
right ventricle to the right atrium.


Correct ANS: tricuspid


Rationale: The tricuspid valve, located between the right
atrium and right ventricle, prevents the backflow of blood into the
atrium when the ventricle contracts.


5. __________ is the process by which oxygen and carbon
dioxide are exchanged between the blood and the air in the lungs.


Correct ANS: Gas exchange
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