Neural Control and Coordination Test

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Neural Control and Coordination Test - 65

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Question 1
1 / -0

Each cerebral hemisphere is divided into lobes ....... in number by sulci.

A
3

B
4

C
5

D
6

Solution

The brain can be divided down the middle lengthwise into two halves called as the cerebral hemispheres. Each cerebral hemisphere is divided into four lobes by sulci and gyri. Thus, the correct answer is option B.
Question 2
1 / -0

The myelin sheath provides ......... to the axon.

A
Mechanical support

B
Electrical insulation

C
Both A and B

D
None of the above

Solution

The myelin sheath of a neuron consists of fat-containing cells that insulate the axon from electrical activity. This insulation helps to increase the rate of transmission of signals. Myelin is made up of inter-twining hydrocarbon chains of sphingomyelin, which serve to strengthen the myelin sheath. Hence it also provides mechanical support to the neuron.
Thus the correct option is C.
Question 3
1 / -0

Comprehension of spoken and written words take place in the region of

A
Association area

B
Motor area

C
Wernicke's area

D
Broca's area

Solution

Wernicke's area also called Wernicke's speech area, is one of the two parts of the cerebral cortex linked to speech. It is involved in the understanding of written and spoken language.
so, the correct answer is 'Wernicke's area'
Question 4
1 / -0

Wernicke's area is related to

A
Speech

B
Smell

C
Taste

D
Hearing

E
Speech and hearing

Solution

Wernicke's area is the region of the brain, that contains motor neurons involved in the comprehension of speech. The Wernicke's area lies close to the auditory cortex. This area is important for the comprehension of speech sounds and is considered to be the language comprehension centre. Wernicke's area is also called 'auditory association area' and is located inferior to the primary auditory area in the temporal cortex, it determines if a sound is speech, music or noise. It also interprets the meaning of speech by translating words to thoughts. So, the correct answer is option E.
Question 5
1 / -0

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neurohormonal control system?

A
Hypothalamus activates the parasympathetic division of brain

B
Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex

C
Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla

D
GABA neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse

Solution

The fight-or-flight response, also known as the acute stress response, refers to a physiological reaction that occurs in the presence of something that is terrifying, either mentally or physically. In response to acute stress, the body's sympathetic nervous system is activated due to the sudden release of hormones. The sympathetic nervous systems stimulate the adrenal glands triggering the release of catecholamines, which include adrenaline and noradrenaline. This results in an increase in heart rate, blood pressure and breathing rate. So, the correct answer is option C.
Question 6
1 / -0

The two cerebral hemispheres are joined together by:

A
Corpora quadrigemina

B
Corpus callosum

C
Corpora striata

D
Rhinal fissure

Solution

The cerebrum is the largest part of the forebrain which is divided into right and left hemispheres. The corpus callosum is a thick band of nerve fibres that joins the left and right hemispheres of the cerebrum.
So, the correct answer is option B.
Question 7
1 / -0

In human brain, the cerebral cortex contain roughly

A
5% of all neuron of brain

B
10% of all neuron of brain

C
20% of all neuron of brain

D
30% of all neuron of brain

E
75% of all neuron of brain

Solution

The cerebral cortex is the outer layer of the cerebral hemispheres. The cerebrum (or forebrain) makes up 75% of the brain by volume and 85% by weight. About 75% of all the brain's neurons are located in the cerebral cortex, mainly in the grey matter. So, the correct answer is option E.
Question 8
1 / -0

The decoding and interpretation of visual information is carried out by which part of the brain?

A
Cerebellum

B
Frontal lobe

C
Parietal lobe

D
Temporal lobe

E
Occipital lobe

Solution

The occipital lobes are the center of our visual perception system. The peristriate region of the occipital lobe is involved in visuospatial processing, discrimination of movement and colour discrimination.
Question 9
1 / -0

Imagination and creativity are generally associated with

A
Right cerebral hemisphere

B
Left cerebral hemisphere

C
Temporal lobe

D
Occipital lobe

Solution

The right cerebral hemisphere of the human brain includes areas associated with abstraction, artistic ability and emotional response. It is popularly regarded as the centre of creativity and imagination.
So, the correct answer is 'Right cerebral hemisphere'
Question 10
1 / -0

Secretion of which of the following is under neurosecretory nerve axons?

A
Pineal

B
Adrenal cortex

C
Anterior pituitary

D
Posterior pituitary

Solution

Oxytocin and vasopressin are produced by the hypothalamus and are stored and released into the blood by the posterior pituitary. These hormones are secreted under neural control. Hypothalamic regulatory hormones control the secretions of the anterior pituitary. Hormonal secretions of the pineal and adrenal cortex are under regulation of tropic hormones of the pituitary gland. So, the correct answer is option D.

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Re-Attempt Weekly Quiz Competition

Neural Control and Coordination Test - 65

Result

Neural Control and Coordination Test - 65

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SHARING IS CARING

Question 1

3

4

5

6

Solution

Question 2

Mechanical support

Electrical insulation

Both A and B

None of the above

Solution

Question 3

Association area

Motor area

Wernicke's area

Broca's area

Solution

Question 4

Speech

Smell

Taste

Hearing

Speech and hearing

Solution

Question 5

Hypothalamus activates the parasympathetic division of brain

Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex

Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla

GABA neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse

Solution

Question 6

Corpora quadrigemina

Corpus callosum

Corpora striata

Rhinal fissure

Solution

Question 7

5% of all neuron of brain

10% of all neuron of brain

20% of all neuron of brain

30% of all neuron of brain

75% of all neuron of brain

Solution

Question 8

Cerebellum

Frontal lobe

Parietal lobe

Temporal lobe

Occipital lobe

Solution

Question 9

Right cerebral hemisphere

Left cerebral hemisphere

Temporal lobe

Occipital lobe

Solution

Question 10

Pineal

Adrenal cortex

Anterior pituitary

Posterior pituitary

Solution

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