endocrine Flashcards
homeostasis
ability to maintain a stable internal environment in spite of changes in the external or internal environmen
what does homeostasis involve
communication and coordination between the nervous system and the endocrine system
what do the glands of endocrine system secrete?
chemical substances that are collectively known as hormones
what is the function of hormones?
diffuse into the bloodstream and communicate with distant cells called target cells.
what are paracrine secretions
substances travel in the interstitial fluid and affect neighboring cells
what are autocrine secretions
chemical secretions affect only the secreting cell.
how are the chemical substances secreted from a cell and delivered to another cell
bodily fluids
what do endocrine glands secrete?
testosterone
cortisol
ADH
insulin
oxytocin
what to exocrine glands secrete?
sweat
mucus
pancreatic juice
bile
saliva
what produces antidiuretic hormone
posterior pituitary gland
how is ADH transported to target cells
through blood
Why are both the kidneys and blood vessels able to respond to ADH?
They both have target cells with ADH receptors.
function of Thyroxine
Affects metabolic processes to increase energy & growth
which gland produce thyroxine?
thyroid gland
function of Calcitonin
Decreases calcium & phosphate levels in blood
which gland produces calcitonin
thyroid gland
function of Parathyroid hormone
increases calcium & phosphate levels in blood
which gland produces parathyroid hormone
parathyroid gland
function of Epinephrine & norepinephrine
Actions are similar to the sympathetic response
which gland produces Epinephrine & norepinephrine
adrenal medulla
function of Aldosterone
Regulates electrolytes in the blood
which gland produces aldosterone
adrenal cortex
function of Cortisol
Affects glucose metabolism
which gland secretes cortisol
adrenal cortex
function of Adrenal androgens
Supplements the major sex hormones
which gland secretes adrenal androgens
adrenal cortex
function of Insulin
Decreases blood glucose levels, increases anabolic processess