Muscle and Nerve Tissues

Muscle Tissue

• Smooth:
  • Contracts involuntarily.
  • Non-striated.
  • Found in walls of stomach, uterus, intestines, bladder, arteries, veins, and eyes.
• Cardiac:
  • Contracts involuntarily.
  • Striated.
  • Found in the heart muscle.
  • Activated by brain or hormones.
• Skeletal:
  • Contracts voluntarily.
  • Striated.
  • Connected to bones of the skeleton.
  • Controlled by the somatic nervous system.

Nervous Tissue

• Neurons:
  • Make up 10% of all nerve cells.
  • Convert stimuli into nerve impulses.
  • Pass impulses to other neurons, muscle fibers, or glands.
  • Unable to regenerate.
• Neuroglia:
  • Make up 90% of all nerve cells.
  • Support and protect neurons.
  • Do not generate nerve impulses.
  • Able to regenerate after injury.

Summary

• Muscle tissue facilitates movement and can be controlled voluntarily or involuntarily.
• Nervous tissue primarily consists of neuroglia, which support neurons.
• Neurons transport impulses throughout the body.