Neural Control and Coordination Test

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Neural Control and Coordination Test - 80

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Question 1
1 / -0

Which one of the following is not a refractive medium of the eye?

A
Lens

B
Vitreous humour

C
Aqueous humour

D
Pupil.

Solution

The structures of the eye that deflect light is called refractive medium. Light is actually refracted through four media in the eye. The first is the cornea (the clear layer on the outside of the eye), then the aqueous humour (liquid), then the lens (which can change shape slightly to allow objects near and far to focus), and then there is the vitreous humour (liquid filling most of the inside of the eye) all of which light needs to pass through before it reaches the retina. Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil. Since, pupil only contacts and dilates, therefore, it is the one not a refractive medium of the eye. So, the correct answer is option D.
Question 2
1 / -0

Select the correct statement regarding the Schwann cells.

A
Surround axon of myelinated nerve fibre

B
Support muscle fibres

C
Found in Haversian system of bones

D
Form basement membrane of epithelium.

Solution

A Schwann cell forms a myelin sheath by wrapping its plasma membrane concentrically around the axon of nerve cells.
Nerves having myelin sheath are called myelinated neurons.
So, the correct answer is option A.
Question 3
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How many pairs of sympathetic ganglia are present in ANS?

A
10

B
12

C
22

D
31.

Solution

Sympathetic ganglia are the ganglia of the sympathetic nervous system. It's function is to deliver information to the body about stress and when the body is in danger, and are responsible for the fight-or-flight response. There are usually 21-23 pairs of these ganglia are present that is, 3 in the cervical region, 11 in the thoracic region, 4 in the lumbar region and 4-5 in the sacral region. So, the correct answer is option C.
Question 4
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The parasympathetic division of the autonomic nervous system:

A
arises from the cranial and sacral spinal cord segments

B
is concerned with conserving and restoring energy H

C
has ganglia near or within visceral effectors

D
all of the above

Solution

The parasympathetic division of autonomic nervous system. The nerve fibres of this system arise from the brain, the cranial nerves and the sacrum of the spinal cord, the sacral nerves
The parasympathetic system is also called the rest and digest system as it stimulates digestion and assimilation
The efferent nerves of the parasympathetic nervous system form ganglia close to the visceral organs or the nerves are innervated in the visceral organs, resulting in the nerve fibers closer to the effector organs to be very short in length
So, the correct option is 'all of the above'
Question 5
1 / -0

Choose the correct answer from the alternatives given.
The cervical plexus supplies the:

A
upper extremities

B
head and shoulders

C
head, neck, and shoulders

D
abdominal regions

Solution

Plexus is a powered weight loss supplement that mix with water and drink. Plexus is slim claimed to help you lose weight by making you feel more full. It is also claimed to help reduce blood sugar and cholesterol levels.
So, the correct option is 'Head, neck, and shoulders'.
Question 6
1 / -0

The _________ is central for planning the movements and blocking unsuitable behavior, and also has roles in memory.

A
visual cortex

B
motor cortex

C
somatosensory cortex

D
prefrontal cortex

Solution

The prefrontal cortex is the cerebral cortex covering the front part of the frontal lobe. This brain region has been implicated in planning complex cognitive behaviour, personality expression, decision making and moderating social behaviour.
So, the correct option is 'Prefrontal cortex'.
Question 7
1 / -0

Select the correct option:
Blood-brain barrier in adults has ........... junctions between cells.

A
Tight

B
Adhering

C
Gap

D
Occluding

Solution

The blood-brain barrier is a dynamic conduit for transport taking place between the brain and blood. The blood vessels and brain are lined with endothelial cells that are wedged tightly together, creating a nearly impermeable boundary.
the blood-brain barrier helps block harmful substances from entering the brain.
So the correct option is option A.
Question 8
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Which statement is incorrect regarding cerebral cortex?

A
It shows prominent fields

B
Large area of cortex neither clearly sensory nor motor

C
It consists of grey matter

D
Fibres of tract in cortex are covered with myelin sheath

Solution

The outermost part of the brain is a thick piece of nervous system tissue called the cerebral cortex. It is covered by the meninges and often referred to as grey matter. The cortex is grey because nerve fibres in this area lack the covering with myelin sheath that makes most other parts of the brain appear to be white. It consists of folded bulges.
So the correct option is D.d gyri that create deep furrows or fissures called sulci. The cerebral cortex contains sensory areas and motor areas and a large area of the cortex is neither clearly sensory nor motor.
So the correct option is D
Question 9
1 / -0

Which of the following human parasympathetic function is not under the control of a cranial nerve?

A
Contraction of bladder

B
Constriction of pupil

C
Increase of salivation

D
Stimulation of gall bladder activity

Solution

The parasympathetic nervous system decreases respiration and heart rate and increases digestion. Stimulation of the parasympathetic nervous systems results in the construction of pupils. Salivation, decrease heart rate and blood pressure.
So, the correct option is 'Contraction of bladder'.
Question 10
1 / -0

Overall nerves slow down the body and divert energy to digestion and other basic housekeeping tasks; and nerves slow down housekeeping tasks and increase overall activity, in times of heightened awareness or excitement.

A
Autonomic; Somatic

B
Sympathetic; Parasympathetic

C
Parasympathetic; Sympathetic

D
Peripheral; Central

Solution

The parasympathetic nervous system decreases respiration and heart rate and increases digestion. Stimulation of the parasympathetic nervous systems results in the construction of pupils. Decrease heart rate and blood pressure. And reverse goes for sympathetic.
So, the correct option is 'Parasympathetic, sympathetic'.

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Neural Control and Coordination Test - 80

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Neural Control and Coordination Test - 80

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SHARING IS CARING

Question 1

Lens

Vitreous humour

Aqueous humour

Pupil.

Solution

Question 2

Surround axon of myelinated nerve fibre

Support muscle fibres

Found in Haversian system of bones

Form basement membrane of epithelium.

Solution

Question 3

10

12

22

31.

Solution

Question 4

arises from the cranial and sacral spinal cord segments

is concerned with conserving and restoring energy H

has ganglia near or within visceral effectors

all of the above

Solution

Question 5

upper extremities

head and shoulders

head, neck, and shoulders

abdominal regions

Solution

Question 6

visual cortex

motor cortex

somatosensory cortex

prefrontal cortex

Solution

Question 7

Tight

Adhering

Gap

Occluding

Solution

Question 8

It shows prominent fields

Large area of cortex neither clearly sensory nor motor

It consists of grey matter

Fibres of tract in cortex are covered with myelin sheath

Solution

Question 9

Contraction of bladder

Constriction of pupil

Increase of salivation

Stimulation of gall bladder activity

Solution

Question 10

Autonomic; Somatic

Sympathetic; Parasympathetic

Parasympathetic; Sympathetic

Peripheral; Central

Solution

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