The cranial nerves which originate from the medulla oblongata are
(1) IX, X, XI and XII

(2) III, VIl and IX

(3) VII, VII IX and X

(4) VIlI, IX, X, XI and XII

AIIMS - 2016
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Node of Ranvier occurs where
(1) nerve is covered with myelin sheath

(2) neurolemma is discontinuous

(3) neurolemma and myelin sheath are discontinuous

(4) myelin sheath is discontinuous

Subtopic:  Nervous System |
 72%
From NCERT
AIIMS - 2015
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The brain disease caused due to accumulation of amyloid β-peptide is 
(1) Addison's disease

(2) Huntington's disease

(3) Parkinson's disease

(4) Alzheimer's disease

Subtopic:  Nervous System |
AIIMS - 2014
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Which of the following part of human brain is also called emotional brain?
1. Corpus callosum

2. Limbic system

3. Epithalamus

4. Broca's area

Subtopic:  Diencephalon |
 86%
AIIMS - 2014
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Go through the following table comparing the effect of sympathetic and parasympathetic nervous system. Which one is matched correctly?

       Features              Sympathetic                  Parasympathetic
                                 Nervous System               Nervous System

(1) Pupil of eye               Dilates                         Constricts

(2) Heart rate                Decreases                       Increases

(3) Intestinal                    Stimulates                          Inhibits
     peristalsis
     movement

(4) Salivary                   Stimulates                      Inhibits secretion
     gland                        secretion

Subtopic:  Autonomic Nervous System: 2 (OLD NCERT) | Autonomic Nervous System (OLD NCERT) |
 77%
AIIMS - 2013
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How macula lutea and corpus luteum are related ?

(1) Contribute in maintain pregnancy 

(2) Both are a source of hormones

(3) Both are characterised by their yellow colour 

(4) Both are found in human ovaries 

Subtopic:  Basic Anatomy of Human Eye: 1 (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
 82%
AIIMS - 2013
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The cornea is a very important component of the human eye. The main function of the cornea is to
(1) bend the light before it reaches the lens

(2) provide structural support to the eye

(3) contain a concentrated amount of cone cells in the correct orientation

(4) change the shape of the lens to enable the image to be focused on the retina

Subtopic:  Basic Anatomy of Human Eye: 1 (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
 58%
AIIMS - 2010
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Animals possess nerve networks or nervous systems to respond to their environment. But
the single celled Amoeba does not possesses any nerve cell, so, how it come to know
whether a particle it encounters is a grain of sand and not its dinner?

(1) By chemotaxis

(2) By skin

(3) By hormones

(4) All of these

Subtopic:  Nervous System |
 54%
AIIMS - 2009
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Assertion   :       Circular smooth muscles of iris contract when bright light falls on the eye.

Reason      :       Pupil gets constricted by the contraction of circular smooth muscles of iris.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Extra Ocular Muscles & Optic Nerve (OLD NCERT) |
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Assertion :      Tongue is a gustatoreceptor.

Reason    :       Receptors for gustatory sensations are located in the taste bund.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Smell & Taste (OLD NCERT) |
 73%
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