Blood clot is mainly due to

Options

A. Plasma and RBC
B. Plasma and thrombocytes
C. Heparin and corpuscles
D. Fibrin and corpuscles.

Answer

**Step-by-Step Text Solution:**

1. **Understanding Blood Clotting**: Blood clotting, also known as coagulation, is a process that prevents excessive bleeding when a blood vessel is injured. It involves a series of complex biochemical reactions.

2. **Components Involved in Clotting**: The main components involved in blood clotting are:
- **Thrombocytes (Platelets)**: These are small cell fragments that play a crucial role in the clotting process.
- **Fibrin**: This is a protein that is formed from fibrinogen, which is a plasma protein. Fibrin forms a mesh that stabilizes the clot.

3. **The Role of Plasma**: Plasma is the liquid component of blood that contains various proteins, including fibrinogen. However, not all plasma proteins are involved in clotting. Only fibrinogen (which is converted to fibrin) is directly involved in the clotting process.

4. **Analyzing the Options**:
- **Plasma and RBC**: Incorrect, as RBCs (Red Blood Cells) do not play a role in clotting.
- **Plasma and Thrombocytes**: Partially correct, but not complete since it does not mention fibrin.
- **Heparin and Carcasses**: Incorrect, as heparin is an anticoagulant that prevents clotting.
- **Fibrin and Carcasses**: Correct, as fibrin is essential for clot formation and thrombocytes (platelets) are crucial for the clotting process.

5. **Conclusion**: The correct answer to the question "Blood clot is mainly due to" is **Fibrin and Thrombocytes (Carcasses)**.

---