Neural Control and Coordination Test

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Neural Control and Coordination Test - 21

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Weekly Quiz Competition

Question 1
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Which of the following statements is correct about receptors?

A
Gustatory receptors detect taste while olfactory receptors detect smell

B
Both gustatory and olfactory receptors detect smell

C
Auditory receptors detect smell and olfactory receptors detect taste

D
Olfactory receptors detect taste and gustatory receptors smell

Solution

Gustatory receptors are present on the papillae of the tongue and work as taste receptors. Olfactory receptors are clustered in the nasal cavity. They detect the smell. Both the receptors relay the information to the brain to interpret the stimulus and generate an appropriate response. Auditory receptors are present in ears they detect voices.
So, the correct answer is option A.
Question 2
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Neural stimulation in visceral organ in human being is done by

A
Sympathetic and parasympathetic nerves and is under involuntary action

B
Sympathetic nerves and is under voluntary action

C
Sympathetic and parasympathetic nerves and is under voluntary action

D
Parasympathetic nerves and is under voluntary action

Solution

Sympathetic nervous system and parasympathetic nervous system are subdivisions of autonomic nervous system. The autonomic nervous system controls the involuntary functions of internal organs such as heart rate, digestion, breathing, urination, etc. The parasympathetic nervous system controls homoeostasis of the body and is responsible for "rest and digest" response. The sympathetic nervous system controls perceived threat responses thus is responsible for "fight or flight" responses. Thus parasympathetic nerves and sympathetic nerves are known to function in relaying information of involuntary functions of the body. So, the correct answer is option A.
Question 3
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In comparison with other cells, nerve cells show a higher degree of

A
Metabolism

B
Growth

C
Contractility

D
Irritability

Solution

Irritability or excitability is the ability of nerve cells to respond to environmental stimulus. Primary function of nerve cells is to generate sensory input in response to external and internal stimuli followed by integration of sensory information to generate motor output. Thus, nerve cells exhibit higher rate of irritability as compared to other cell types.
Therefore, the correct answer is option D.
Question 4
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Olfactory receptor organs are sensitive to

A
Light

B
Sound

C
Smell

D
Equilibrium
Solution
- Olfactory receptors are also known as odorant receptors.
- They are present in the cell membranes of olfactory receptor neurons and are responsible for the detection of odour which gives rise to the sense of smell.
- Hence, Olfactory receptor organs are sensitive to Smell.
- So, the correct answer is 'Smell'.
Question 5
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Nucleated part of nerve cell is called as

A
Axon

B
Dendrites

C
Cyton

D
None of the above

Solution

Axon is the long, thin hair like part arising from the cell body of the neuron.
Dendrites are short, branched parts arising from cell body or cyton. Dendrites are many in number.
Cyton is a part of neuron containing the nucleus. It is also called cell body. Therefore, option C is correct.
Question 6
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Cell body of a nerve cell contains_____________.

A
Nucleus

B
Cytoplasm

C
Kupffer cells

D
Both A and B

Solution

Cyton or cell body of a neuron possesses cytoplasm and nucleus. It contains many organelles, including granules called Nissl granules, which are composed largely of rough endoplasmic reticulum and free polyribosomes. Therefore, option D is correct.
Question 7
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Nerve fibre is

A
A thin nerve

B
Fibre formed by many axons

C
Fibre formed by ensheathing of axon in myelinated fibre

D
Fibre formed by ensheathing of a dendrite

Solution

A nerve fibre is a long, thin hair-like extension arising from the cell body of a neuron. In the myelinated nerve, the axon is ensheathed with myelin. Therefore, option C is correct.
Question 8
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Largest number of cell bodies of neuron in our body are found in the_________.

A
Retina

B
Spinal cord

C
Brain

D
Tongue

Solution

The largest number of cell bodies of neurons in our body is found in the brain.
The human brain is the main organ of the human nervous system. It is located in the head, protected by the skull. It has the same general structure as the brains of other mammals, but with a more developed cerebral cortex.
The human brain is composed of neurons, glial cells, and blood vessels.

Question 9

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Choose the correct matching -

(a)	Occipital lobe	(i)	It is the region for visual reception.
(b)	Temporal lobe	(ii)	It is the region for touch, smell, temperature and conscious association.
(c)	Parietal lobe	(iii)	It is the region for muscular activities.
(d)	Frontal lobe	(iv)	It is the region for auditory reception.

(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)

(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

Question 10
1 / -0

The function of sympathetic nervous system is to

A
Decrease heartbeat

B
Increase heartbeat

C
Contract respiratory organ

D
Secrete saliva
Solution
Structurally and functionally, the ANS is further classified into two separate sub-systems called Sympathetic neural system and Parasympathetic neural system.
In the sympathetic neural system, the neurotransmitter between the neurons and target organ is adrenaline/ noradrenaline. Sympathetic nerve ending excites a particular organ. Following are the main functions of the sympathetic neural system:
Effect on heartbeat: The sympathetic neural system accelerates the heartbeat.
Effect on secretions of salivary glands: The sympathetic neural system inhibits the secretion of saliva from the salivary glands.
Thus, the correct answer is option B.

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Re-Attempt Weekly Quiz Competition

Neural Control and Coordination Test - 21

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Neural Control and Coordination Test - 21

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Question 1

Gustatory receptors detect taste while olfactory receptors detect smell

Both gustatory and olfactory receptors detect smell

Auditory receptors detect smell and olfactory receptors detect taste

Olfactory receptors detect taste and gustatory receptors smell

Solution

Question 2

Sympathetic and parasympathetic nerves and is under involuntary action

Sympathetic nerves and is under voluntary action

Sympathetic and parasympathetic nerves and is under voluntary action

Parasympathetic nerves and is under voluntary action

Solution

Question 3

Metabolism

Growth

Contractility

Irritability

Solution

Question 4

Light

Sound

Smell

Equilibrium

Solution

Question 5

Axon

Dendrites

Cyton

None of the above

Solution

Question 6

Nucleus

Cytoplasm

Kupffer cells

Both A and B

Solution

Question 7

A thin nerve

Fibre formed by many axons

Fibre formed by ensheathing of axon in myelinated fibre

Fibre formed by ensheathing of a dendrite

Solution

Question 8

Retina

Spinal cord

Brain

Tongue

Solution

Question 9

(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)

(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

Question 10

Decrease heartbeat

Increase heartbeat

Contract respiratory organ

Secrete saliva

Solution

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