Tissues

Definition

Tissues are groups of similar cells that work together to perform a specific function. They are essential components in multicellular organisms, contributing to the structure and function of organs and systems.

5 Must Know Facts For Your Next Test

1. Tissues are classified into four main types: epithelial, connective, muscle, and nervous tissue.
2. Epithelial tissues cover body surfaces and line hollow organs, acting as a barrier.
3. Connective tissues provide support and structure to the body, including bone, blood, and fat.
4. Muscle tissues are responsible for movement through contraction and include skeletal, cardiac, and smooth muscle.
5. Nervous tissues transmit electrical impulses throughout the body for communication and response.

Review Questions

• What are the four main types of tissues found in multicellular organisms?
• How do epithelial tissues differ from connective tissues in terms of function?
• What role do nervous tissues play in an organism?

Related terms

Cell: The basic unit of life that makes up all living organisms.

Organ: A collection of tissues joined to perform a specific function within an organism.

System: A group of organs that work together to carry out complex functions for the body.