Chapter 33, Problem 13A

Summary Introduction

Introduction:

The brain is the most complex part of the human body. It is the central organ of the nervous system. The brain consists of three main parts- the cerebrum, cerebellum, and brainstem. The cerebrum functions the sense and controls movements of a human body like hearing, touching, learning, etc. The brainstem is the middle part of the brain. It controls the movement of eyes and mouth and also regulates the heartbeat. The cerebellum is located at the back of the head and it controls the movement and maintains posture.

Answer to Problem 13A

Correct answer:

The correct answer is option (C) trouble maintaining balance.

Explanation of Solution

Explanation/justification for the correct answer:

Option (C) trouble maintaining balance. The indicated part is the cerebellum. It is located at the backside of the brain. It is responsible for maintaining balance and also maintains posture. So, this is the correct answer.

Explanation for incorrect answer:

Option (A) partial or complete memory loss. The indicated part is not responsible for partial or complete memory loss. The parietal and temporal lobe of the cerebrum is responsible for memory loss, not the cerebellum. So, this is an incorrect option.

Option (B) body temperature fluctuations. The cerebellum is not responsible for changing temperature. The body temperature is maintained by the hypothalamus. So, this is an incorrect option.

Option (D) rapid breathing. The cerebellum is not responsible for rapid breathing. Rapid breathing is functioned by medulla oblongata. So, this is an incorrect answer.