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Neural Control and Coordination

AIPMT 2011 (Prelims)MCQEasy📈 Topic in 12% papers+4−1
Ques. 1AIPMT 2011 (Prelims)

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

Answer

(4) vitamin A

Solution

As per NCERT, the rods contain a purplish-red protein called rhodopsin (visual purple), which contains a derivative of vitamin A (retinal).

Deficiency of vitamin A therefore causes night blindness.

Answer: (4)

Out of syllabus

Keep practising — Neural Control and Coordination

Ques. 2AIPMT 2010 (Mains)

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
Ques. 3AIPMT 2010 (Prelims)

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

  1. hypothalamus
  2. pons
  3. cerebellum
  4. thalamus
Ques. 4AIPMT 2009

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

  1. glutamic acid
  2. acetylcholine
  3. gamma aminobutyric acid (GABA)
  4. dopamine.
Ques. 5AIPMT 2009

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

  1. Cerebellum
  2. Cerebrum
  3. Hypothalamus
  4. Medulla oblongata
Ques. 6AIPMT 2008

During the propagation of a nerve impulse, the action potential results from the movement of

  1. K+ ions from intracellular fluid to extracellular fluid
  2. Na+ ions from extracellular fluid to intracellular fluid
  3. K+ ions from extracellular fluid to intracellular fluid
  4. Na+ ions from intracellular fluid to extracellular fluid
Ques. 7AIPMT 2008

Given below is a diagrammatic cross section of a single loop of human cochlea. [Figure] Which one of the following options correctly represents the names of three different parts?

  1. B : Tectorial membrane, C : Perilymph, D : Secretory cells
  2. A : Perilymph, B : Tectorial membrane, C : Endolymph
  3. C : Endolymph, D : Sensory hair cells, A : Serum
  4. D : Sensory hair cells, A : Endolymph, B : Tectorial membrane
Ques. 8AIPMT 2008

Cornea transplant in humans is almost never rejected. This is because

  1. it is composed of enucleated cells
  2. it is a non-living layer
  3. its cells are least penetrable by bacteria
  4. it has no blood supply
Out of syllabus
Ques. 9AIPMT 2008

Which one of the following is the correct difference between rod cells and cone cells of our retina?

  1. array|l|l|l| & Rod cells & Cone cells \ Overall function & Vision in poor light & Colour vision and detailed vision in bright light \ array
  2. array|l|l|l| & Rod cells & Cone cells \ Distribution & More concentrated in centre of retina & Evenly distributed all over retina \ array
  3. array|l|l|l| & Rod cells & Cone cells \ Visual acuity & High & Low \ array
  4. array|l|l|l| & Rod cells & Cone cells \ Visual pigment contained & Iodopsin & Rhodopsin \ array
Out of syllabus
Ques. 10AIPMT 2007

During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?

  1. First positive, then negative and continue to be negative
  2. First negative, then positive and continue to be positive
  3. First positive, then negative and again back to positive
  4. First negative, then positive and again back to negative
Ques. 11AIPMT 2007

Bowman's glands are located in the

  1. Anterior pituitary
  2. Female reproductive system of cockroach
  3. Olfactory epithelium of our nose
  4. Proximal end of uriniferous tubules

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