Question

Heparin is secreted by
A) kidney
B) blood cells
C) Nerve cells
D) liver

Answer 1

Heparin is an anticoagulant which prevents the formation and extension of blood clots or in other words slows down the process of making blood clots.

Complete answer:

Option A: Kidney secretes the hormones of the renin-angiotensin system, erythropoietin and vitamin D. Therefore, this is an incorrect option.
Option B: Basophils are the blood cells secrete heparin (an anticoagulant), serotonin and histamine (a chemical involved in inflammation ).Therefore,this is the correct option.
Basophils are leukocytes (white blood corpuscles) which are colourless due to the lack of hemoglobin. Heparin is needed to prevent blood clots in people who have undergone a medical procedure in which the chances of formation of blood clot is increased.
Option C: Nerve cells secrets neurotransmitter occurs only in a restricted region,the synapse. Therefore, this is an incorrect answer.
Option D: Liver is the main site for elimination of cholesterol, bile pigments (bilirubin and biliverdin) degraded steroids hormones some vitamin and many drugs. Liver secretes these substances in the bile. Therefore, this is an incorrect answer.

Thus, the correct answer is option (B) Blood cells.

Note: In these cells the nucleus is generally 3 lobed. In case there is too much of heparin in blood, then,
i) The bleeding takes longer to stop.
ii) An increase in liver enzymes is seen on a LFT test.
iii) Bruising occurs more easily.