NEURAL CONTROL AND COORDINATION

 

Q61.Injury localized to the hypothalamus would no kaly disrupt

(1) Short-term memory 

(2) Co-ordination during locomotion 

(3) Executive functions, such as decision mak 

(4) Regulation of body temperature 

Ans.4

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Q62.Which one of the following statements is no correct

(1) Retinal is the light absorbing portion of visual photo pigments 

(2) In retina the rods have the photopigment rhodopsin while cones have three different photopigments 

(3) Retinal is a derivative of Vitamin C 

(4) Rhodopsin is the purplish red protein present in rods only

Ans.3

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Q63.The human hind brain comprises three parts, one of which is 

(1) Cerebellum 

(2) Hypothalamus

(3) Spinal cord 

(4) Corpus callosum 

Ans.1

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Q64.Which part of the human ear plays no role in hearing as such but is otherwise very much required? 

(1) Ear ossicles

(2) Eustachian tube 

(3) Organ of Corti 

(4) Vestibular apparatus 

Ans.4

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Q65.A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro- hormonal control system?

(1) Sympathetic nervous system is activated releasing epinephrin and norepinephrin from adrenal cortex

(2) Sympathetic nervous system is activated releasing epinephrin and norepinephrin from adrenal medulla 

(3) Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse 

(4) Hypothalamus activates the parasympathetic division of brain  

Ans.2

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Q66.The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of

(1) Vitamin A 

(2) Vitamin C 

(3) Vitamin B, 

(4) Vitamin D 

Ans.1

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Q67.When a neuron is in resting state i.e. not conducting any impulse, the axonal membrane is  

(1) Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions

(2) Comparatively more permeable to Na ions and nearly impermeable to K+ ions 

(3) Equally permeable to both Na+ and K+ ions

(4) Impermeable to both Na+ and K+ ions

Ans.1

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Q68.The nerve centres which control the body temperature and the urge for eating are contained in 

(1) Thalamus  

(2) Hypothalamus 

(3) Pons 

(4) Cerebellum 

Ans.2

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Q69.Which part of human brain is concerned with the regulation of body temperature? 

(1) Cerebellum 

(2) Hypothalamus   

(3) Cerebrum 

(4) Medulla Oblongata 

Ans.2

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Q70.During the propagation of a nerve impulse, the action potential results from the movement of 

(1) Na+ ions from extracellular fluid to intracellular fluid 

(2) K+ ions from extracellular fluid to intracellular fluid 

(3) Na+ ions from intracellular fluid to extracellular fluid 

(4) K+ ions from intracellular fluid to extracellular fluid 

Ans.1

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