A | B |
Exocrine glands | Secrete into a duct which then carries secretion to body surface or body cavity (sweat glands, salivary glands) |
Endocrine glands | Secrete into the extracellular fluid that surrounds the cells making up the gland. Passes into capillaries, carried in the blood. (A.K.A. Ductless glands) |
Hormone | Secretion of an endocrine gland that is generally transported in the blood |
Homeostasis in relation to hormones | Maintain homesostasis by changing the activity of cells, either by changing permeability of cell membrane, or by changing the rate of chemical reactions in cell. |
Feedback systems in relation to hormones | Negative feedback systems are used to regulate the hormonal secretions. Some involve the nervous system... |
Releasing factors | Stimulate release of hormone |
Inhibiting factors | Slow down release of a hormone |
Infundibulum | Stalk whcih joins pituitary gland and hypothalamus |
Anterior lobe of the pituitary | Secretes gonadotrophins, Growth hormone, Thyroid stimulating hormone, Adrenocorticotrophic hormone and prolactin |
Gonadotrophins | Hormones that affect the gonads. FSH stimulates development of follicle that contains egg or maturation of sperm in male testes. Lutenising hormone (LH) works with FSH to bring about ovulation and form Corpus Luteum. In males it stimulates interstitial cells to secrete male sex hormones |