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1. What do adrenal glands secrete?
2. What does adrenalin do?
3. In what instance does adrenaline rush happen in our life?

1. The main hormones secreted by the adrenal medulla include epinephrine (adrenaline) and norepinephrine (noradrenaline), which have similar functions.

2. Key actions of adrenaline include increasing the heart rate, increasing blood pressure, expanding the air passages of the lungs, enlarging the pupil in the eye (see photo), redistributing blood to the muscles and altering the body's metabolism, so as to maximise blood glucose levels (primarily for the brain).

3. Adrenaline rush may occur during times of stress, such as an exam or job interview. Extreme activities, which include riding a rollercoaster or doing a bungee jump, can also trigger an adrenaline rush.

JOANNAMARIE131GO JOANNAMARIE131GO · Answer 2

Answer:

1. The adrenal medulla, the inner part of an adrenal gland, controls hormones that initiate the flight or fight response. The main hormones secreted by the adrenal medulla include epinephrine (adrenaline) and norepinephrine (noradrenaline), which have similar functions.

2. Key actions of adrenaline include increasing the heart rate, increasing blood pressure, expanding the air passages of the lungs, enlarging the pupil in the eye (see photo), redistributing blood to the muscles and altering the body's metabolism, so as to maximise blood glucose levels (primarily for the brain).

3. An adrenaline rush does not always happen when a person is facing a real threat. It may also occur during times of stress, such as an exam or job interview. Extreme activities, which include riding a rollercoaster or doing a bungee jump, can also trigger an adrenaline rush.