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Blood is composed of several components, each with specific functions. The main components of blood are:
1. **Red Blood Cells (RBCs):** Also known as erythrocytes, these cells contain hemoglobin, a protein that binds with oxygen. RBCs transport oxygen from the lungs to the rest of the body and help carry carbon dioxide, a waste product, back to the lungs for exhalation.
2. **White Blood Cells (WBCs):** Also known as leukocytes, these cells play a crucial role in the immune system. They help defend the body against infections and foreign substances. There are different types of white blood cells, each with specific functions.
3. **Platelets:** These are small cell fragments that help in blood clotting. When a blood vessel is injured, platelets adhere to the site and release chemicals to form a clot, preventing excessive bleeding.
4. **Plasma:** Plasma is the liquid component of blood, making up about 55% of the total blood volume. It is a yellowish fluid that contains water, electrolytes, proteins, hormones, waste products, and various nutrients. Plasma helps maintain blood pressure and facilitates the transportation of substances throughout the body.
5. **Plasma Proteins:** These include albumins, globulins, and fibrinogen. Albumins help maintain blood volume and pressure, globulins play a role in immune response, and fibrinogen is essential for blood clotting.
These components work together to maintain the balance and health of the body. Blood serves vital functions, such as oxygen transport, immune defense, and waste removal.
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Answer:red blood cell
Explanation:
1. **Red Blood Cells (RBCs):** Also known as erythrocytes, these cells contain hemoglobin, a protein that binds with oxygen. RBCs transport oxygen from the lungs to the rest of the body and help carry carbon dioxide, a waste product, back to the lungs for exhalation.
2. **White Blood Cells (WBCs):** Also known as leukocytes, these cells play a crucial role in the immune system. They help defend the body against infections and foreign substances. There are different types of white blood cells, each with specific functions.
3. **Platelets:** These are small cell fragments that help in blood clotting. When a blood vessel is injured, platelets adhere to the site and release chemicals to form a clot, preventing excessive bleeding.
4. **Plasma:** Plasma is the liquid component of blood, making up about 55% of the total blood volume. It is a yellowish fluid that contains water, electrolytes, proteins, hormones, waste products, and various nutrients. Plasma helps maintain blood pressure and facilitates the transportation of substances throughout the body.
5. **Plasma Proteins:** These include albumins, globulins, and fibrinogen. Albumins help maintain blood volume and pressure, globulins play a role in immune response, and fibrinogen is essential for blood clotting.
These components work together to maintain the balance and health of the body. Blood serves vital functions, such as oxygen transport, immune defense, and waste removal.