Nervous System Test - 1

Medulla is a part of the brain which controls involuntary actions such as blood pressure, salivation, sensation of vomiting, etc. Cerebellum is a part of the brain which controls voluntary actions such as walking in a straight line, riding bicycle, etc.

Cerebrum is the largest part of brain. All important events of life are stored as memory in this part.

Cerebellum controls functions like balancing, movement, and co-ordination. Hence, damage to cerebellum affects balance of the body.

The cells of the nervous tissue are known as neurons or nerve cells. These cells transmit stimulus from one part of the body to another.

This question is successfully answered by the student who knows that the air sacs are part of the respiratory system.

Brain is the main coordinating centre of the body. It is a part of central nervous system that controls and monitors every organ of the body. On the other hand, spinal cord, a major part of central nervous system, conducts sensory and motor nerve impulses to and from the brain. Hence, brain and spinal cord are the sites, where all kind of information is processed and controlled.

Fore brain is the part of brain that controls hearing, smell, sight, and voluntary actions such as thinking, talking, etc.

Hence, the correct answer is option B.

Why alternative A is wrong:

Hind brain controls involuntary actions. Talking is a voluntary action controlled by fore brain.

Why alternative C is wrong:

Medulla controls breathing and heart beat. Balance and posture is maintained by cerebellum.

Why alternative D is wrong:

Cerebellum is responsible for maintaining balance and posture. Reflex action is controlled by spinal cord.