Endocrine System Flashcards
Exocrine glands secrete into?
ducts
Onto surface or lumen
Act locally
Endocrine glands secrete?
hormones into bloodstream
No ducts
Act at a distance
Hormone - Reproduction
oestrogen
Testosterone
Hormone - Metabolic Rate
Thyroid
Hormone - Growth
Growth hormone
Hormone - Stress response
adrenaline
cortisol
Hormone - Immune system
cortisol
Hormone - Blood pressure
ADH
Aldosterone
Hormone - Digestive processes
gastrin
CCK
secretin
Hormone - Blood glucose levels
insulin
glucagon
Hormone - Blood calcium levels
calcitonin
parathyroid
Hormone - sodium / potassium balance
aldosterone
Major glands
Pineal gland Hypothalamus Pituitary Thyroid gland Parathyroid glands Thymus Adrenal glands Pancreas Ovary Testis
Neurohormones secreted by
hypothalamus
posterior pituitary
adrenal medulla
Two groups of hormones
Water-soluble (Mostly proteins)
Lipid-soluble (Steroids)
Water-soluble hormones
Hypothalamic and pituitary hormones
GIT hormones
Insulin
Adrenaline
Lipid-soluble hormones
Sex hormones
Cortisol
Aldosterone
Thyroid hormones
Water-soluble hormones require
2nd messenger receptor on the cell membrane
Lipid-soluble hormones? into cell
Diffuse into cell