Which one is correct

Options

A. Blood = plasma + RBC + WBC + blood platelets
B. Plasma = blood - lymphocytes
C. Neuron = cyton + dendrite + axon + synapse
D. Lymph = plasma + RBC + WBC

Explanation

To determine which statement is correct, we need to analyze the options provided in the question. Here’s a step-by-step breakdown of the reasoning:

### Step 1: Understanding Blood Composition
- Blood is composed of various components: plasma, red blood cells (RBCs), white blood cells (WBCs), and platelets. Plasma is the liquid part of the blood that carries cells and other substances.

### Step 2: Analyzing Option A
- Option A states that "the blood that is present in your body is called plasma, RBC, WBC, blood platelets."
- This statement is correct because it accurately describes the components of blood. Plasma is indeed the liquid portion, and it includes RBCs, WBCs, and platelets.

### Step 3: Analyzing Option B
- Option B states "plasma is equal to blood minus lymphocytes."
- This statement is incorrect because plasma is the liquid component of blood and does not equal blood minus lymphocytes. Plasma contains various proteins and nutrients but does not include cells.

### Step 4: Analyzing Neuron Structure
- The statement about neurons includes "cytone plus dendrite plus exon plus synapse."
- This is incorrect because a neuron consists of a cell body (cyton), dendrites, and an axon. The synapse is the junction between two neurons and is not part of a single neuron.

### Step 5: Analyzing the Lymph Statement
- The statement about lymph being "plasma plus RBC plus WBC" is also incorrect. Lymph is a fluid that is similar to plasma but does not contain red blood cells (RBCs) or white blood cells (WBCs) in significant amounts.

### Conclusion
- After analyzing all options, the correct answer is Option A, which accurately describes the components of blood.

### Final Answer
- **Option A is correct.**

---