(LU) HLTH 221 Applied Human Anatomy & Physiology I - Latest Final Exam Review Q & S 2024(LU) HLTH 221 Applied Human Anatomy & Physiology I - Latest Final Exam Review Q & S 2024(LU) HLTH 221 Applied Human Anatomy & Physiology I - Latest Final Exam Review Q & S 2024
,1. Which of the following cell types is primarily responsible for
bone resorption?
- A. Osteoblasts
- B. Osteoclasts
- C. Chondrocytes
- D. Fibroblasts
Answer: B. Osteoclasts
Rationale: Osteoclasts are responsible for bone resorption,
breaking down bone tissue, which is essential for bone remodeling
and calcium homeostasis.
2. Which of the following neurotransmitters is most commonly
associated with the sympathetic nervous system response?
- A. Acetylcholine
- B. Serotonin
- C. Norepinephrine
- D. Dopamine
, Rationale: Norepinephrine is the primary neurotransmitter
released by postganglionic neurons in the sympathetic nervous
system.
3. The oxygen-hemoglobin dissociation curve shifts to the right
under which of the following conditions?
- A. Increased pH
- B. Decreased temperature
- C. Increased 2,3-BPG concentration
- D. Increased oxygen concentration
Answer: C. Increased 2,3-BPG concentration
Rationale: An increase in 2,3-BPG decreases hemoglobin’s
affinity for oxygen, facilitating oxygen release to tissues.
4. What is the primary function of aldosterone?
- A. Increase blood glucose levels
- B. Increase sodium reabsorption in the kidneys
- C. Decrease heart rate
- D. Stimulate digestive enzyme secretion
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