The 200 different cell types identified in humans are classified into the four tissue types

Options

A. Blood, connective, muscle, nerve
B. Epithelia, supportive, nerve, muscle
C. Connective, muscle, epithelial, nerve
D. Supportive, connective, nerve, blood

Answer

To answer the question regarding the classification of the 200 different cell types identified in humans into the four tissue types, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Tissue**:
- Tissue is defined as a group of cells that perform a similar function. In humans, there are various types of cells that come together to form tissues.

2. **Identifying the Four Major Tissue Types**:
- The four major tissue types in humans are:
- **Epithelial Tissue**: This tissue covers body surfaces and lines cavities. It is involved in functions such as protection, secretion, and absorption.
- **Muscle Tissue**: This tissue is responsible for movement. It is found in muscles and is made up of muscle fibers.
- **Nervous Tissue**: This tissue is composed of neurons and is responsible for conducting nerve impulses, facilitating communication within the body.
- **Connective Tissue**: This tissue supports, binds, and protects other tissues and organs. It includes blood, bone, cartilage, and adipose tissue.

3. **Conclusion**:
- Therefore, the 200 different cell types in humans can be classified into the following four tissue types: **Epithelial, Muscle, Nervous, and Connective**.

### Final Answer:
The four tissue types are: **Epithelial, Muscle, Nervous, and Connective**.

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