reflexes

• Reflex action:

  fast involuntary response of an effector due to stimulation of a sense organ
• Reflex arc:

  neuron pathway that causes reflex action, the functional unit of the nervous system
• Reflex goes to spinal cord so that the reaction is immediate, it wouldn't be if the impulse went to the brain then muscles, also then it is unconscious
• Simple reflex:

  information doesn't go to the brain, it is involuntary fast and protects from harm

  involved in maintaining constant internal environment (homeostasis)\
• Conditioned reflex:

  prior thought and learning teaches the body to respond unconsciously