Physiological Response To Stress Pg 104 And 105

Question 1

What did selye research find?

Answer 1

Rats bodily responses were the same to any stressor.

Question 2

What dooes GAS stand for?

Answer 2

General Adaptation Syndrome- the bodys response to stress

Question 3

List the 3 stages of the general adaptation syndrome

Answer 3

Stage 1- Alarm reactiom

Stage 2- Resistence

Stage 3- Exhaustion

Question 4

Describe what happens in the first satge of general adaptation syndrome

Answer 4

Stage 1- Alarm reaction

When a stressor is recognised the hypothalamus in the brain triggeres adrenaline for flight or fight.

If stressor ends, returns to normal.

Question 5

Describe what happens in stage 2 if the General Adaptation syndrome.

Answer 5

Stage 2- resistence

If stressor continues, the bodys resources are used (e.g glucose hormones).

Question 6

Describe stage 3 of GAS

Answer 6

stage 3 - exhaustion

Resources to resist stressor is gone and person has same symptoms (e.g sweating raised heart rate).

Stress related illness are likely.

Question 7

Acute stress

Answer 7

Sympatho-medullary system (SAM)

Question 8

Describe what happens in sympatho-medullary system

Answer 8

• The hypothalamus signals the adrenal medullas to release adrenaline and noradrenaline hormone into the bloodstream
• hormones circulate in the blood and stimulate target organs e.g heart

Question 9

Chronic stress

Answer 9

Hypothalamic-pituitary adrenal system

Question 10

Describe what happens in the hypothalamic pituitary adrenal system

Answer 10

• hypothalamus activates the hypothalamic pituitary adrenal gland
• hormone corticotropin releasing factor (crf) is relaeased.
• pituitary gland detects (crf) and releases hormone adrenocorticotropic hormone (ACTH).
• Adrenal glands are stimulated by ACTH to release cortisol.

Question 11

What does cortisol do?

Answer 11

Helps the body stress response.
But long term it damages body bcz it supresses immune system