STEM 2 Body Tissues TISSUE BASICS Tissues are

STEM 2 Body Tissues

TISSUE BASICS • Tissues are groups of cells that are similar in structure and that work together to perform a specific function. • There are four main tissue types: • Epithelium • Connective tissue • Muscle • Nervous tissue

Epithelium • Epithelium, or epithelial tissue, forms the linings, coverings, and glandular tissue of the body. • One type of epithelium forms the outer layer of the skin • Another type of epithelium lines the air sacs of the lungs • Cells in epithelium are packed tightly together to form continuous sheets

Connective Tissue • Connective tissue protects, supports, and binds together other body tissues. • Connective tissue is made up of different types of cells with varying amounts of a nonliving substance around the cells, called the matrix. • Examples of connective tissue include: • • Bone Cartilage Adipose tissue (fat) Blood

Muscle Tissue • Muscle tissue is specialized to contract and cause movement. • There are three main types of muscle tissue: • Skeletal muscle • Cardiac muscle • Smooth muscle • Can you guess the location and function of each muscle type?

Nervous Tissue This Photo by Unknown Author is licensed under CC BY-NC-SA • Nervous tissue is composed of specialized cells called neurons that receive and send electrical signals in the body. • Nervous tissue responds to stimuli and transmits impulses and together with supporting cells, makes up the brain, spinal cord, and nerves.