Biospychology- the endocrine system Flashcards
What is the endocrine system?
- It is a communication system that instructs glands to release hormones directly into the blood stream.
What is a hormone?
A chemical substance that circulates in the bloodstream and affects target organs.
What are the effects of hormones?
Affect cells in several organs leading to a diverse range of responses.
What is the role of the hypothalamus?
A brain region connected to the pituitary gland. It is responsible for stimulating or controlling the release of hormones from the pituitary gland.
What are the glands in the endocrine system where are they and what do they do?
Hypothalamus - brain controls pituitary gland
Pituitary gland - brain secretes many hormones
Thyroid gland - chest affects metabolism.
Parathiods - chest helps regulate level of calcium in the blood.
Ovary - secretes female hormones
Testis - secretes male hormones.
Pancreas - regulate the levels of sugar in the blood
Adrenal glands - help trigger the fight-or-flight response.
What is the adrenal medulla?
Inside, adrenaline and noradrenaline - key role fight or flight.
What is the adrenal cortex?
Outside, cortisol - triggers the release of glucose to provide the body with energy and suppressing the immune system.
What are the testes roles?
Release testosterone which is responsible for male sex characteristics during puberty and muscle growth.
What is the role of the ovaries?
Release oestrogen which regulates female reproductive system.
