A&P TEST 1 REVIEW QUESTIONS AND ANSWERS | LATEST VERSION | GRADED A+
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Course
A&P
Institution
A&P
A&P TEST 1 REVIEW QUESTIONS AND
ANSWERS | LATEST VERSION |
GRADED A+
What are the primary functions of the integumentary system’s accessory structures?
To enhance the skin's protective barrier, regulate temperature, and aid in sensory perception.
How does the composition of the derm...
A&P TEST 1 REVIEW QUESTIONS AND
ANSWERS | LATEST VERSION |
GRADED A+
What are the primary functions of the integumentary system’s accessory structures?
✔✔ To enhance the skin's protective barrier, regulate temperature, and aid in sensory perception.
How does the composition of the dermis contribute to its role in the skin?
✔✔ The dermis, consisting of connective tissue, provides strength and elasticity to the skin, and
houses blood vessels and nerves that support epidermal functions.
What role does bone marrow play in the skeletal system?
✔✔ Bone marrow is responsible for hematopoiesis, the production of blood cells, including red
blood cells, white blood cells, and platelets.
How do synovial joints facilitate movement in the body?
1
,✔✔ Synovial joints allow for a wide range of motion due to their fluid-filled cavities that reduce
friction between bones.
What is the significance of the sarcomere in muscle contraction?
✔✔ The sarcomere, the basic contractile unit of muscle fibers, shortens and contracts through the
interaction of actin and myosin filaments.
How does the heart ensure unidirectional blood flow through the cardiovascular system?
✔✔ The heart’s valves prevent backflow of blood and ensure it moves efficiently from one
chamber to the next and into the arteries.
What is the purpose of the surfactant produced by the alveoli?
✔✔ Surfactant reduces surface tension within the alveoli, preventing their collapse and ensuring
efficient gas exchange during respiration.
2
, How does the gastrointestinal tract contribute to nutrient absorption?
✔✔ Through specialized structures such as villi and microvilli, which increase the surface area
for the absorption of nutrients into the bloodstream.
What mechanisms are involved in maintaining the body’s acid-base balance?
✔✔ The respiratory and urinary systems regulate pH levels by adjusting the excretion of carbon
dioxide and hydrogen ions, respectively.
What is the function of the autonomic nervous system in regulating bodily functions?
✔✔ It controls involuntary physiological processes, such as heart rate, digestion, and respiratory
rate, by influencing smooth and cardiac muscle activity.
How does the exocrine function of the pancreas aid in digestion?
✔✔ By secreting digestive enzymes into the small intestine that help break down proteins,
carbohydrates, and fats.
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