Q21 of 54 Page 51

Match the following:


Explanation: A. Vasopressin: As vasopressin hormone regulates the reabsorption of water and urine formation. If in some way the secretion of this hormone is affected, regulation of water reabsorption and urine formation will get affected and the person will suffer from Diabetes insipidus.


B. Insulin: Insulin hormone regulates the blood glucose level. If the secretion of insulin is affected in some way the blood glucose level will also get affected and the person will suffer from Diabetes mellitus.


C. Oxytocin: This hormone is released during the childbirth as it causes contraction and relaxation of the uterus and thus helps in the delivery of the baby as contraction and relaxation helps in expelling the baby out.


D. Thymosin: This hormone helps in the differentiation of T- lymphocytes which are a part of adaptive immune system and thus help in resisting infections.


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19

Match the following:

 20

A person was riding a two-wheeler without wearing a helmet. He met with an accident and sustained a head injury. He was dead before he was shifted to the hospital and it was found that his death was due to breathlessness and heart failure. Which part of his brain might have been damaged? Justify your answer.

 22

Observe the following diagrams that depict the transmission of nerve impulses through two pathways from body parts to CNS:


If all the nerves at both the places are similar in thickness and structure, through which pathway will the transmission of an impulse (of the same threshold) be faster and why?

 23

Which gland is called the ‘dual gland’? Why?