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SCI 220 Human Anatomy with ISB Experiential Learning Finals Exam (Qns & Ans) 2026
1. Which anatomical structure primarily regulates heart rhythm?
- A) AV Node
- B) SA Node
- C) Bundle of His
- D) Purkinje Fibers
- Correct ANS: B) SA Node
- Rationale: The sinoatrial (SA) node is known as the heart's
natural pacemaker, initiating the electrical impulses that dictate
heart rhythm.
2. What is the primary function of the glomerulus in the
nephron?
- A) Reabsorption of nutrients
- B) Filtration of blood
- C) Secretion of waste
- D) Regulation of urine pH
- Correct ANS: B) Filtration of blood
- Rationale: The glomerulus filters blood, allowing water,
ions, and small molecules to pass while retaining larger molecules
and cells.
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