The difference between blood and lymph :

Options

A. Blood has WBCs while lymph has RBCs
B. Blood has dissolved salts while lymph has no cells
C. Blood has RBCs and WBCs while lymph has no cells
D. Blood has both RBCs and WBCs while lymph has only WBCs

Answer

### Step-by-Step Solution:

1. **Definition of Blood and Lymph**:
- Blood is a connective tissue that circulates in the cardiovascular system, consisting of red blood cells (RBCs), white blood cells (WBCs), platelets, and plasma.
- Lymph is a clear fluid that flows through the lymphatic system, primarily composed of lymphocytes and proteins.

2. **Cellular Composition**:
- Blood contains both red blood cells (RBCs) and white blood cells (WBCs), along with platelets.
- Lymph primarily contains white blood cells (WBCs), specifically lymphocytes, and does not contain red blood cells (RBCs).

3. **Color**:
- Blood is red in color due to the presence of hemoglobin in red blood cells.
- Lymph is colorless because it lacks red blood cells.

4. **Clotting Factors**:
- Blood has a higher concentration of fibrinogen, which allows it to clot effectively when needed.
- Lymph has a lower concentration of fibrinogen, resulting in a slower clotting process.

5. **Proteins**:
- Blood plasma contains a variety of proteins, including albumin and globulins.
- Lymph contains diffusible proteins, which are fewer in comparison to blood.

6. **Function**:
- Blood is responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body.
- Lymph plays a crucial role in the immune system and helps in the removal of interstitial fluid from tissues.

### Summary of Differences:
- **Composition**: Blood has RBCs and WBCs; lymph has only WBCs.
- **Color**: Blood is red; lymph is colorless.
- **Clotting**: Blood clots quickly due to high fibrinogen; lymph clots slowly due to low fibrinogen.
- **Proteins**: Blood contains various proteins; lymph contains diffusible proteins.