Question

What are animal tissues?

Answer 1

Tissue:

A group of identical cells, combined with an intercellular substance, fulfill a specialized role in multicellular creatures.

Animal tissues are divided into four groups: epithelial tissue, connective tissue, muscle tissue, and neural tissue.

Epithelial tissue:

1. This tissue serves as a covering or lining for a body part.
2. It has a free surface that is exposed to either a body fluid or the outside environment.
3. Epithelial tissues are divided into two types: simple epithelium and compound epithelium.
4. Example - Skin, the lining of body cavities, ducts, and tubes

Connective tissue:

1. They connect and support the body's various tissues and organs.
2. They include soft connective tissues and specialized forms such as cartilage, bone, adipose tissue, and blood.
3. Cells in all connective tissues, excluding blood, secrete collagen or elastin fibers.
4. These cells also release modified polysaccharides, which form a matrix between cells and fibers.
5. Dense connective tissue, specialized connective tissue, and loose connective tissue are the three forms of connective tissue.

Muscle tissue:

1. Muscle fibers are tiny, elongated cells that make up the muscle.
2. Muscles are involved in all of the body's movements.
3. Muscles are of three types, skeletal, smooth, and cardiac.

Neural tissue:

1. The body's reactivity to changing conditions is mostly controlled by neural tissue.
2. Glial cells and neurons are the two types of cells that make up nervous tissue.