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1666. About ......... of the total calcium present in the human body is in the blood.
A. 99%
B. 70%
C. 5%
D. 1%
Explanation:
1667. The ligaments join
A. muscle to muscle
B. bone to bone
C. muscle to bone
D. None of these
Explanation:
1668. Heart attack occurs due to
A. bacterial attack on the heart
B. stopping of heart beat
C. lack of blood supply to the heart itself
D. impairment of hearts working due to unknown reasons
Explanation:
1669. Insulin is secreted in
A. pituitary
B. liver
C. pancreas
D. parathyroid
Explanation:
1670. How many pairs of salivary glands are there in human body ?
A. 1
B. 2
C. 3
D. 4
Explanation:
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