2. Nervous System
• The Nervous System has three specific functions:
• Sensory Input - Sensory receptors present in the skin and organs
respond to external & internal stimuli by generating nerve
impulses that to the central nervous system
• Integration - The brain and spinal cord of the Central Nervous
System combine and sum up all the data received from the body
and send out nerve impulses.
• Motor Output - The nerve impulses from the Central Nervous
System go to the effectors (muscles and glands). Muscle
contractions and gland secretions are responses to stimuli
received by sensory receptors.
