CH7. THE NERVOUS SYSTEM AND BRAIN

1. Which of the following is the primary function of the somatic nervous system?

A. Controls involuntary actions such as heartbeat

B. Transmits sensory information to the central nervous system

C. Regulates the release of hormones

D. Maintains homeostasis through the autonomic nervous system

Answer: B

Explanation:

The somatic nervous system is responsible for voluntary movements and transmits sensory information from sensory organs to the central nervous system.

2. Which part of the brain is primarily responsible for regulating vital functions such as breathing and heart rate?

A. Cerebellum

C. Medulla oblongata

B. Hypothalamus

D. Hippocampus

Answer: C

Explanation:

The medulla oblongata is responsible for regulating vital functions such as breathing, heart rate, and blood pressure.

3. The parasympathetic nervous system is part of which larger system?

A. Somatic nervous system

B. Central nervous system

C. Autonomic nervous system

D. Endocrine system

Answer: C

Explanation:

The parasympathetic nervous system is a branch of the autonomic nervous system, which controls involuntary functions like heart rate, digestion, and respiratory rate.

4. Which brain structure is essential for forming new memories?

A. Thalamus

C. Amygdala

B. Hippocampus

D. Cerebellum

Answer: B

Explanation:

The hippocampus is essential for forming new memories and is involved in the consolidation of information from short-term to long-term memory.