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Neural Control and Coordination · Question 29

NEET 2013MCQMedium📈 Topic in 12% papers+4−1
1

Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions/characteristics. [Figure]

  1. B - Blind spot - Has only a few rods and cones.
  2. A - Retina - Contains photoreceptors, i.e., rods and cones.
  3. C - Aqueous chamber - Reflects the light which does not pass through the lens.
  4. D - Choroid - Its anterior part forms ciliary body.

Answer

(2) A - Retina - Contains photoreceptors, i.e., rods and cones.

Solution

A is the innermost layer of the eye ball, the retina. As per NCERT, the retina contains three layers of cells (ganglion cells, bipolar cells and photoreceptor cells); the photoreceptors are the rods and cones.

(1) B is the blind spot, but it has no photoreceptor cells at all.

(3) The aqueous chamber (between the cornea and the lens) is filled with aqueous humor; it does not reflect light.

(4) D is the outermost layer, the sclera; the ciliary body is formed by the anterior part of the choroid, not the sclera.

Answer: (2)

Out of syllabusNEET 2013

Keep practising — Neural Control and Coordination

2

The figure shows an axon terminal and synapse. Select the option giving correct identification of labels A-D. [Figure]

  1. C-Receptor, D-Synaptic vesicles
  2. A-Axon terminal, B-Serotonin complex
  3. A-Action potential, C-Neurotransmitter
  4. B-Neurotransmitter, D-Receptor capsules
NEET 2013 (Karnataka)
3

A sagittal section of human brain is shown here. Identify at least two labels from A-D. [Figure]

  1. A-Cerebral hemispheres, B-Cerebellum
  2. B-Corpus callosum, D-Medulla
  3. C-Mid brain, D-Cerebellum
  4. A-Cerebrum, C-Pons
NEET 2013 (Karnataka)
4

The human hind brain comprises three parts, one of which is

  1. spinal cord
  2. corpus callosum
  3. cerebellum
  4. hypothalamus.
AIPMT 2012 (Prelims)
5

Which part of the human ear plays no role in hearing as such but is otherwise very much required?

  1. Eustachian tube
  2. Organ of Corti
  3. Vestibular apparatus
  4. Ear ossicles
AIPMT 2012 (Prelims)
6

When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is

  1. comparatively more permeable to Na+ ions and nearly impermeable to K+ ions
  2. equally permeable to both Na+ and K+ ions
  3. impermeable to both Na+ and K+ ions
  4. comparatively more permeable to K+ ions and nearly impermeable to Na+ ions.
AIPMT 2011 (Prelims)
7

The purplish red pigment rhodopsin contained in the rod type of photoreceptor cells of the human eye, is a derivative of

  1. vitamin B1
  2. vitamin C
  3. vitamin D
  4. vitamin A
Out of syllabusAIPMT 2011 (Prelims)
8

Select the answer with correct matching of the structure, its location and function.

  1. array|l|l|l| Structure & Location & Function \ Eustachian tube & Anterior part of internal ear & Equalises air pressure on either side of tympanic membrane \ array
  2. array|l|l|l| Structure & Location & Function \ Cerebellum & Midbrain & Controls respiration and gastric secretions \ array
  3. array|l|l|l| Structure & Location & Function \ Hypothalamus & Forebrain & Controls body temperature, urge for eating and drinking \ array
  4. array|l|l|l| Structure & Location & Function \ Blind spot & Near the place where optic nerve leaves the eye & Rods and cones are present but inactive here \ array
AIPMT 2010 (Mains)
9

The nerve centres which control the body temperature and the urge for eating are contained in

  1. hypothalamus
  2. pons
  3. cerebellum
  4. thalamus
AIPMT 2010 (Prelims)
10

Alzheimer's disease in humans is associated with the deficiency of

  1. glutamic acid
  2. acetylcholine
  3. gamma aminobutyric acid (GABA)
  4. dopamine.
AIPMT 2009
11

Which part of human brain is concerned with the regulation of body temperature?

  1. Cerebellum
  2. Cerebrum
  3. Hypothalamus
  4. Medulla oblongata
AIPMT 2009

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