Biology

Nervous System Physiology

1,959 Questions

Enhance your knowledge of human neurobiology through questions on nervous system physiology. The topics cover brain anatomy, sensory modalities, and the neural mechanisms controlling speech and language. This resource is ideal for students preparing for medical and general science exams.

Brain anatomy and regionsNeural mechanismsLanguage processingSensory functions

Nervous System Physiology Questions

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

The cavity of diencephalon is known as

  1. I ventricle

  2. II ventricle

  3. III ventricle

  4. iter
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

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

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

  1. Personality

  2. Posture

  3. Speech

  4. Hearing
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The prefrontal lobes of the cerebrum are responsible for executive functions, including decision-making, social behavior, and personality. Damage to this area often results in significant changes to an individual's personality and temperament.

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

The brain is responsible for 

  1. Thinking

  2. Regulation of heart beat

  3. Thermo regulation

  4. All 1, 2 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Crus cerebrum is

  1. The posterior part of cerebrum

  2. The anterior part of cerebrum

  3. The part of mesencephalon

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The mesencephalon is also called the midbrain. It is a small and reduced part of the brain which connects the forebrain with the brainstem. Its anterior part consists of two longitudinal myelinated nerve fibres called the cerebral peduncles or crus cerebrum or the crura cerebri. The posterior part is made of four colliculi that are called the corpora quadrigemina.

Hence, the correct answer is 'The part of mesencephalon'

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

A chemosensitive area adjacent to rhythm centre in the brain is highly sensitive to
I. Oxygen II. $CO _2$ III. $H^+$ ions IV. $HCO _3$ ions V. Water.

  1. I only

  2. II and III only

  3. I and IV only

  4. V only

  5. I and V only
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The chemosensitive area near the rhythm center in the medulla is highly sensitive to changes in CO2 concentration and H+ ion concentration in the blood, which regulate the rate of respiration.

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

Brain stem is made of

  1. Mid brain, pons, cerebellum

  2. Mid brain, pons, medulla oblongata

  3. Diencephalon, medulla oblongata, cerebellum

  4. Cerebellum, cerebrum, medulla oblongata
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The brain stem is anatomically composed of the midbrain, the pons, and the medulla oblongata. It connects the cerebrum to the spinal cord.

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

Read the following and find the correct statements
() Mid brain, pons varoli and medulla oblongata are together called brain stem
(b) Paracoels, are connected to the diacoel through the iter
(c) Regulation centres of heart beat, respiration, swallowing, cough etc are located in medulla oblongata 
(d) Cerebellum is also called gyroscope of the body

  1. a, b, c

  2. a, c, d

  3. b, c, d

  4. a, b, d
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement (a) is correct (midbrain, pons, medulla). Statement (c) is correct (medulla controls vital functions). Statement (d) is correct (cerebellum maintains balance/gyroscope). Statement (b) is often debated in nomenclature, but (a, c, d) are clearly correct.