March 17, 2014

Sympathetic Nervous System: 

            -fight or flight response

            -automatically accelerates heart rate, breathing, dilates pupils, slows down digestion

Parasympathetic Nervous System: 

             -automatically slows the body down after stressful event

             -heart rate and breathing slow down, pupils constrict and digestion speeds up

Reflexes: 

-Normally sensory (afferent) neurons take info up through spine and to the brain

-some reactions occur when sensory neurons reach just the spinal cord 

Lesions- cutting into the brain looking for change in brain structures

1. Medulla Oblongata: heart rate, breathing, and blood pressure

2. Pons: connects behind the brain, mid brain, and forebrain together involved in facial expression

3. Cerebellum: located in the back of our head means little brain, coordinates muscle movement