animal tissue

Tissues

• Composed of a group of specialized cells working together

• 4 main types:

  • Connective

  • Muscle

  • Epithelial

  • Nervous

Connective tissue

• Cells held together by a matrix (liquid, solid, or gel)

• Found in bones, blood, ligaments, tendons, and cartilage

Functions of connective tissue

• Supports structures in the body

• Protects structures in the body

• Binds structures together in the body

• Stores fat

• Transports nutrients and wastes (through blood)

• Helps repair tissue damage

Muscle tissue

• Cardiac muscle - found in the heart

• Skeletal muscle - attached to bones

• Smooth muscle - found in walls of internal organs

Functions of muscle tissue

• Movement

• Posture

• Joint stability

• Heat production

• Storing and moving substances

Epithelial tissue

Lines organs and your body (i.e. skin)

Three types:

• Squamous - plate-like cells

• Cuboidal - cubic cells

• Columnar - elongated cells

Functions of epithelial tissue

• Protects structures

• Secretes mucus

• Absorbs minerals and nutrients

• Filtering

• Diffusion

• Sensory reception

Nervous tissue

• Found in nerves and the brain

• Cells are often long with branches to help conduct electrochemical signals

Functions of nervous tissue

• Responding to stimuli

• Coordinating and controlling body functions

• Communicating within the body