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, Anatomy & Physiology
1. Which organ system controls and coordinates body
functions through electrical impulses?
A. Circulatory
B. Digestive
C. Nervous
D. Endocrine
Answer: C
Rationale: The nervous system transmits electrical signals
to regulate body functions.
2. The exchange of oxygen and carbon dioxide occurs in
which lung structure?
A. Bronchi
B. Alveoli
C. Trachea
D. Pleura
Answer: B
Rationale: Alveoli are small air sacs where gas exchange
occurs via diffusion.