Sympathomedullary pathway

Sympathomedullary pathway

1. HYPOTHALAMUS

2. SYPATHETIC BRANCH OF ANS (spinal cord)

3. ADRENAL MEDULLA (inner spinal cord)

4. ADRENALINE

5. BODY CHANGES FROM SYMPATHETIC AROUSAL

6. PARASYMPATHETIC BODY CHANGES

it is a part of the brain which triggers activity in the sympathetic branch of the ANS

This is part of the spinal cord.

the ANS changes from its current resting state (parasympathetic) to an aroused symthatic state

the stress hormone adrenaline is related into the bloodstream

Stress hormone released by adrenal glands into the bloodstream.

Adrenaline triggers psychological changes in the body

There are a number of physiological changes

-butterflies

-stress

-pupils dilate

-increase blood pressure and heart rate

Once the threat has passed, the parasympathetic nervous system returns the body to its nervous state.

- decrease heart rate

- decrease breathing rate

- stimulates digestion