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MCQs

Total Questions : 111 | Page 9 of 12 pages
Question 81. Which set of ions are necessary for the nerve impulse conduction?
  1.    Sodium and potassium ions
  2.    Sodium and calcium ions
  3.    Calcium and potassium ions
  4.    Sodium and magnesium ions
 Discuss Question
Answer: Option A. -> Sodium and potassium ions
Answer: (a).Sodium and potassium ions
Question 82. Reflex action is simplest form of response in _______
  1.    Simple animals
  2.    Higher animals
  3.    Smaller animals
  4.    Lowest animals
 Discuss Question
Answer: Option B. -> Higher animals
Answer: (b).Higher animals
Question 83. Reflex arc consists of ________
  1.    Motor nerve
  2.    Sensory nerve
  3.    Both motor and sensory nerve
  4.    Mixed nerve
 Discuss Question
Answer: Option C. -> Both motor and sensory nerve
Answer: (c).Both motor and sensory nerve
Question 84. Dorsal root of spinal nerves contains ________
  1.    Effectors neurons
  2.    Stimulators
  3.    Detector neurons
  4.    Receptor neurons
 Discuss Question
Answer: Option D. -> Receptor neurons
Answer: (d).Receptor neurons
Question 85. Which of the following is not involved in voluntary actions?
  1.    Math neuron
  2.    Relay neuron
  3.    Sensory neuron
  4.    Synapse
 Discuss Question
Answer: Option C. -> Sensory neuron
Answer: (c).Sensory neuron
Question 86. The inner most layer of human eye is _____
  1.    Sclera
  2.    Cornea
  3.    Choroid
  4.    Retina
 Discuss Question
Answer: Option D. -> Retina
Answer: (d).Retina
Question 87. Nerve fibers are __________
  1.    Nuclear processes
  2.    Protoplasmic processes
  3.    Endoplasmic process
  4.    Cytoplasmic processes
 Discuss Question
Answer: Option D. -> Cytoplasmic processes
Answer: (d).Cytoplasmic processes
Question 88. Color blindness is due to defect in ________
  1.    Cones
  2.    Rods
  3.    Rods and cons
  4.    Rhodopsin
 Discuss Question
Answer: Option A. -> Cones
Answer: (a).Cones
Question 89. The purplish red pigment rhodopsin contained in rods type of photoreceptor cell is a derivative of ______
  1.    Vitamin B1
  2.    Vitamin C
  3.    Vitamin D
  4.    Vitamin A
 Discuss Question
Answer: Option D. -> Vitamin A
Answer: (d).Vitamin A
Question 90. Color perception in man is due to _______
  1.    Rhodopsin present in rod cells
  2.    Iodopsin present in cone cells
  3.    Rhodopsin present in cone cells
  4.    Iodopsin present in rod cells
 Discuss Question
Answer: Option B. -> Iodopsin present in cone cells
Answer: (b).Iodopsin present in cone cells

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