-Hormones are chemical substances that help to regulate processes in the body,
-Hormones are secreted by glands and travel to their target organs in the bloodstream.
-Several hormones are involved in the female menstrual cycle.
-Hormones can be used to control human fertility and have advantages and disadvantages.
Hormones and glands:
- Hormones are chemicals secreted by glands in the body
- Different hormones affect target organs
- The bloodstream transports hormones from the glands to the target organs.
Hormones regulate the functions of many cells and organs
The target organ and effects of glands and hormones
GlandHormoneTarget organsEffect adrenal gland adrenalin vital organs, eg liver and heart Prepares body for action - 'fight or flight'. ovary oestrogen ovaries, uterus, pituitary gland Controls puberty and the menstrual cycle in females; stimulates production of LH and suppresses the production of FSH in the pituitary gland. ovary progesterone uterus Maintains the lining of the womb - suppresses FSH production in the pituitary gland. pancreas insulin liver Controls blood sugar levels. pituitary gland anti-diuretic hormone (ADH) kidney Controls blood water level by triggering uptake of water in kidneys. pituitary gland follicle stimulating hormone (FSH) ovaries…