What is tissue?

What is a tissue?

There are two meanings to the word "tissue":

• A group of cells that are similar in structure and function.
• A soft, absorbent material made from cellulose fibers.

In biology, tissue is a group of cells that are similar in structure and function. Tissues are the building blocks of organs and organ systems. There are four main types of tissue in the human body:

Epithelial tissue: This tissue covers the surface of the body and lines the organs and cavities.

Connective tissue: This tissue provides support and structure to the body. It includes bone, cartilage, fat, and blood.

Muscle tissue: This tissue allows the body to move. It includes skeletal muscle, cardiac muscle, and smooth muscle.

Nervous tissue: This tissue carries messages throughout the body. It includes neurons and neuroglia.

In everyday speech, the word "tissue" is often used to refer to a soft, absorbent material made from cellulose fibers. This type of tissue is typically used for cleaning and wiping. It is also used to make bandages and other medical supplies.