Physiology Practice Exam Questions
and Answers | Latest Version |
2025/2026 | Correct & Verified
Which part of the heart ensures blood flows in only one direction and prevents backflow?
✔✔Heart valves
A patient’s skeletal system allows them to stand upright. Which bones primarily support this
function?
✔✔Vertebrae and lower limb bones
When a patient breathes deeply during exercise, which part of the lungs is most active in gas
exchange?
✔✔Alveoli
A nurse asks why capillaries are so thin-walled. What is the correct explanation?
✔✔To allow rapid diffusion of oxygen and nutrients into tissues
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,Which structure in the brain integrates sensory information and coordinates movement?
✔✔Cerebellum
When you touch a hot surface, which system quickly sends signals to your muscles to withdraw
your hand?
✔✔Peripheral nervous system
Which type of muscle allows food to move through the digestive tract without conscious control?
✔✔Smooth muscle
During severe dehydration, which organ plays the key role in conserving water and maintaining
blood pressure?
✔✔Kidneys
When someone has a thyroid disorder affecting metabolism, which hormone is most likely
involved?
✔✔Thyroxine
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, Which structure in the eye adjusts to focus on objects near and far?
✔✔Lens
A patient has swelling due to fluid retention. Which system is primarily responsible for draining
excess interstitial fluid?
✔✔Lymphatic system
When a patient stands for long periods, which blood vessels prevent blood from pooling in the
legs?
✔✔Veins with valves
Which part of the brain is responsible for regulating sleep, temperature, and hunger?
✔✔Hypothalamus
A patient’s blood oxygen levels drop. Which structure in the lungs ensures oxygen enters the
bloodstream efficiently?
✔✔Alveoli
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