Tag: nervous system of man

Questions Related to nervous system of man

Amount of CSF in cranial cavities is

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. 500 ml

  2. 140 ml

  3. 1 litre

  4. 1.5 ml

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Correct Option: B

Choose the correct answer from the alternatives given.
Which of the following structures or regions is incorrectly paired with its function?

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. Brocas regions-screening of information between the spinal cord and the brain regulates arousal and sleep

  2. Medulla oblongata - homeostatic control centres

  3. Cerebellum - unconscious co-ordination of movement and balance

  4. Hypothalamus - production of hormones and regulation of temperature, hunger, and thirst

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Correct Option: A
Explanation:

Broca's area is a region in the frontal lobe of the dominant hemisphere, usually the left, of the brain with functions linked to speech production.

So, the correct option is 'Broca's region - Screening of information between the spinal cord and the brain regulates arousal and sleep'.

How many laminae are present in grey matter of spinal cord

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. Four

  2. Six

  3. Eight

  4. Ten

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Correct Option: D

Which of the following has H-shaped grey matter?

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. Cerebrum

  2. Medulla oblongata

  3. Cerebellum

  4. Spinal cord

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Correct Option: D

Lateral funiculi possess ganglia

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. Sensory

  2. Motor

  3. Both A and B

  4. None of the above

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Correct Option: D
Explanation:

Lateral funiculi are part of white matter of spinal cord having myelinated nerve fibres. Cell bodies/ganglia occur in grey matter that lies inside and in horns of spinal cord.

The cavity of diencephalon is known as

biology nervous system of man human nervous system the structure of brain the human brain

  1. I ventricle

  2. II ventricle

  3. III ventricle

  4. iter

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Correct Option: C
Explanation:

The third ventricle is one of four connected fluid-filled cavities comprising the ventricular system within the mammalian brain. It is a median cleft in the diencephalon between the two thalami and is filled with cerebrospinal fluid (CSF). It is in the midline, between the left and right lateral ventricles.

So, the correct option is 'III Ventricle'.

The mechanism of swallowing is under the control of?

biology nervous system of man human nervous system the structure of brain the human brain

  1. Cerebrum

  2. Diencephalon

  3. Mid-brain

  4. Brain stem

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Correct Option: A

Any damage to the prefrontal lobes of cerebrum will predominantly affect.

biology nervous system of man human nervous system the structure of brain the human brain

  1. Personality

  2. Posture

  3. Speech

  4. Hearing

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Correct Option: A

Fill in the blank with correct option.
$120$ mean ________ intelligence.

biology nervous system of man human nervous system the structure of brain the human brain

  1. Superior

  2. Genius

  3. Average

  4. None of the above

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Correct Option: A

The brain is responsible for 

biology nervous system of man human nervous system the structure of brain the human brain

  1. Thinking

  2. Regulation of heart beat

  3. Thermo regulation

  4. All 1, 2 and 3

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Correct Option: D
Explanation:

Frontal lobe of cerebrum of brain is responsible for thinking, evaluation of information, judgement, decision making, and planning and response organization i.e. intellectual processes. The cardiovascular reflex center of medulla oblongata regulates the rate and force of heat beat. The thermoregulation centre is present in hypothalamus which maintains the constant human body temperature by regulation of the diameter of blood vessels (constriction or dilation), shivering and sweating mechanism. Thus, correct answer is D.