Q14 of 44 Page 113

The axon of nerve cell in hand is shorter than the axon of nerve cell in the leg. Do you support this statement? Why? (AS1)

yes, because sciatic nerve in the leg contains neural axons that extend from the spinal cord all the way to the muscles in the foot, a distance of over a 1 meter. Usually, the length of the leg is more in size than hand. Hence the axon of nerve cell in hand is shorter than the axon of nerve cell in leg.


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Man is the most intelligent animal. What could be the fact that helped us to reach such a conclusion? (AS1)

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Organs respond to the external stimulus by a fraction of second. How do you feel about such controlling mechanism of the human body? (AS1)

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State whether the following actions are a voluntary action, reflex action or conditioned reflex. (AS1)

A. Blinking B. Cleaning the table


C. Playing on the key board D. Salivating when food is put in the mouth.


E. We close our ears when we hear the unbearable sound