Question

The blood does not clot inside the body because of:

• A. oxygenation of blood
• B. movement of blood
• C. presence of heparin in blood
• D. absence of fibrinogen in blood

Answer 1

The correct option is C

presence of heparin in blood

The correct option is C:

Explanation of the correct option:

Option C:

Presence of heparin in blood :

1. Blood clotting (or coagulation) is a thickening of the blood, forming semi-solid masses.
2. Clotting is triggered by an external injury.
3. Basophils and mast cells create heparin, a glycosaminoglycan with anticoagulant effects.
4. It prevents blood clots from forming within blood arteries.

Explanation of the incorrect option:

Option A:

Oxygenation of blood :

1. Oxygenation of blood creates larger Haemoglobin-Based Oxygen Carriers.
2. A larger number of Haemoglobin-based Oxygen Carriers may increase the likelihood of coagulation of blood.

Option B:

Movement of blood :

Blood flow controls the movement, or mass transfer, of zymogens, cofactors, enzymes, and inhibitors to, from, and within a developing thrombus, which affects coagulation and fibrin formation.

Option D:

Absence of fibrinogen in blood :

Fibrinogen is a clotting factor found in the blood that causes blood to clot when there is an external injury to the body.

Final answer: The blood does not clot inside the body because of the presence of heparin in the blood.