Test: Central Nervous System In Humans


5 Questions MCQ Test Science Class 10 | Test: Central Nervous System In Humans


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QUESTION: 1

Lower portion of brain that extends downwards into spinal cord is called:

Solution:

Medulla oblongata, also called medulla, the lowest part of the brain and the lowest portion of the brainstem. The medulla oblongata is connected by the pons to the midbrain and is continuous posteriorly with the spinal cord, with which it merges at the opening (foramen magnum) at the base of the skull.

QUESTION: 2

Respiration control centre is present in:

Solution:

The medulla which sends signals to the muscles involved in breathing, and the pons which controls the rate of breathing.

QUESTION: 3

Which of the following is the network of nerve centers in the autonomic nervous system?

Solution:

The sympathetic nervous system activates what is often termed the fight or flight response. Sympathetic neurons are frequently considered part of the peripheral nervous system (PNS), although there are many that lie within the central nervous system (CNS).

Sympathetic neurons of the spinal cord (which is part of the CNS) communicate with peripheral sympathetic neurons via a series of sympathetic ganglia.

Within the ganglia, spinal cord sympathetic neurons join peripheral sympathetic neurons through chemical synapses.

QUESTION: 4

Olfactory lobes are a part of:

Solution:

Olfaction lobe in forebrain helps in sensing the smell. 

The forebrain in our body is the largest part of our brain. 

The most of this part is cerebrum. 

The other important structures which form the part of forebrain are the thalamus, the hypothalamus and the limbic system. 

It is the neutral structure of a person’s forebrain.

QUESTION: 5

Gustatory receptors detect

Solution:

Detecting a taste (gustation) is fairly similar to detecting an odor (olfaction), given that both taste and smell rely on chemical receptors being stimulated by certain molecules. The primary organ of taste is the taste bud. A taste bud is a cluster of gustatory receptors (taste cells) that are located within the bumps on the tongue called papillae. There are several structurally distinct papillae. 

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