Questions: Autonomic Nervous Part A Autonomic Nervous Part B Pupils are dilated Pupils contract Heartbeat Accelerates Heartbeat slows Digestion Stops Digestion continues Relaxes bladder Bladder Contracts Which branch of the autonomic nervous system is described by the functions listed in Part B of the table? (A) Parasympathetic nervous system (B) Sympathetic nervous system (C) Central nervous system (D) Somatic nervous system

Autonomic Nervous Part A Autonomic Nervous Part B

Pupils are dilated Pupils contract

Heartbeat Accelerates Heartbeat slows

Digestion Stops Digestion continues

Relaxes bladder Bladder Contracts

Which branch of the autonomic nervous system is described by the functions listed in Part B of the table?

(A) Parasympathetic nervous system
(B) Sympathetic nervous system
(C) Central nervous system
(D) Somatic nervous system

Transcript text: Mark for Review \begin{tabular}{|c|c|} \hline Autonomic Nervous Part A & Autonomic Nervous Part B \\ \hline Pupils are dilated & Pupils contract \\ \hline Heartbeat Accelerates & Heartbeat slows \\ \hline Digestion Stops & Digestion continues \\ \hline Relaxes bladder & Bladder Contracts \\ \hline \end{tabular} Which branch of the autonomic nervous system is described by the functions listed in Part B of the table? (A) Parasympathetic nervous system (B) Sympathetic nervous system (C) Central nervous system (D) Somatic nervous system

Solution

The answer is (A) Parasympathetic nervous system.

Explanation for each option:

(A) Parasympathetic nervous system: This branch of the autonomic nervous system is responsible for "rest and digest" functions. The functions listed in Part B of the table, such as pupils contracting, heartbeat slowing, digestion continuing, and bladder contracting, are all associated with the parasympathetic nervous system.

(B) Sympathetic nervous system: This branch is responsible for "fight or flight" responses, which include pupils dilating, heartbeat accelerating, digestion stopping, and bladder relaxing. These functions are listed in Part A of the table, not Part B.

(C) Central nervous system: This consists of the brain and spinal cord and is not directly responsible for the specific autonomic functions listed in the table.

(D) Somatic nervous system: This system controls voluntary movements of skeletal muscles and is not involved in the autonomic functions listed in the table.

Summary: The functions listed in Part B of the table are characteristic of the parasympathetic nervous system, making (A) the correct answer.

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