The one most commonly thought of is cortisol, which is released by the adrenal glands in response to sustained high levels of stress.
However, epinephrine and norepinephrine (old names are adrenaline and noradrenaline) are also stress hormones.
There are mainly two: adrenaline and adrenocorticotropic hormone (ACTH).
cortisol and norepinephrine
cortisol
Andreneline
The circulatory system does not produce adrenaline. That is the job of the endocrine system.
Insulin.
The name cortisol tells you that it comes from the cortex.
Cholecystokinin.
Adrenocorticotropic hormone (ACTH)
The hormone that aids in the fight or flight response is adrenalin. Adrenalin is secreted by the adrenal medulla and makes the heart beat faster.
yes hormones can be secreted in response to external stimuli. the bast example is adrenal hormone. whenever you are afraid of some external causes it gets released
Corticotropin-Releasing Hormone (CRH)
gastrin
Gastrin is produced in the stomach and starts secretion.
insulin is secreted in response to high blood sugar.
The medical term for the hormone secreted by the testes is testosterone.