NEURAL CONTROL AND COORDINATION

 

Q81.Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter 

(1) Acetylcholine 

(2) Norepinephrine

(3) Dopamine

(4) GABA

Ans.3

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Q82.Poisons like cyanide inhibit Na+efflux and K+ influx during cellular transport. This inhibitory effect is reversed by an injection of ATP. This demonstrates that 

(1) ATP is the carrier protein in the transport system 

(2) Energy for Na+-K+ exchange pump comes from ATP 

(3) ATP is hydrolysed by ATPase to release energy 

(4) Na+-K+ exchange pump operates in the cell 

Ans.2

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Q83.In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive 

(1) K+ into the cell 

(2) K+ and Na+ out of the cell 

(3) Na+ into the cell 

(4) Na + out of the cell 

Ans.3

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Q84.Alzheimer's disease in humans is associated with the deficiency of 

(1) Gamma aminobutyric acid (GABA) 

(2) Dopamine 

(3) Glutamic acid 

(4) Acetylcholine 

Ans.4

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Q85.Which cranial nerve has the highest number of branches? 

(1) Vagus nerve 

(2) Trigeminal 

(3) Facial nerve 

(4) None of these 

Ans.1

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Q86.Injury to vagus nerve in humans is not likely to affect 

(1) Tongue movements 

(2) Gastrointestinal movements 

(3) Pancreatic secretion 

(4) Cardiac activity

Ans.1

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Q87.The sympathetic nerves, in mammals, arise from 

(1) Sacral nerves 

(2) 3rd, 7th, 9th and 10th cranial nerves 

(3) Thoracico-lumbar segments of spinal cord 

(4) Cervical nerves 

Ans.3

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Q88.Sympathetic nervous system induces

(1) Secretion of digestive juices 

(2) Increase in heart beat rate 

(3) Secretion of saliva 

(4) All of these

Ans.2

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Q89.Post ganglionic fibre of sympathetic nervous system connected with sweat gland secrete

(1) Adrenaline 

(2) Epinephrine 

(3) Acetylcholine 

(4) GABA 

Ans.3

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Q90.Which of following is not the action of sympathetic nervous system? 

(1) Dilation of pupil 

(2) Storage of bile in the gall bladder 

(3) Constriction of peripheral arteries 

(4) Contraction in the wall of urinary bladder 

Ans.4

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