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Directions:Choose the letter of the best answer.Write the chosen letter on a separate sheet of paper.

1.Which of the following is a special structure capable of secreting chemical substance directly to the bloodstream?

a.gallbladder
b.gland
c.liver
d.stomach

2.Which condition is caused by lack of iodine?

a.Dwarfish
b.gigantism
c.goiter
d.tumor

3.Calcium is neccessary for stronger bones.Too much amount of calcium in the blood is regulated by what hormone from thyroid?

a.Adrenaline
b.Parathormone
c.Calcitonin
d.thyroxin

4.Our bones become strong and longer because of growth hormones.What gland secretes this hormone?

a.Adrenal
b.Parathyroid
c.Pituitary
d.Thyroid

5.Which of the following does NOT belong to the group?

a.Calcitonin
b.Insulin
c.Thyroxin
d.Estrogen



ANSWERS:

1.b
2.c
3.c
4.c
5.d


Sagot :

Answer:

1.b

2.c

3.c

4.c

5.d

Explanation:

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