Question

Increase in bleeding time and delay in blood coagulation is due to the deficiency of which hormone ?

• A. Adrenaline
• B. Noradrenaline
• C. Parathormone
• D. Thyroxine

Answer 1

Answer: (C)

Parathormone

Answer 2

Calcium plays an important role in blood clotting. Parathormone, a hormone released by parathyroid glands, increases calcium level in the blood. Therefore, deficiency of this hormone will decrease $Ca^{2+}$ level in blood, thus leading to delay in blood clotting and increase in bleeding time.