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28 Cards in this Set

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Adrenal Glands
2 glands located superior to kidneys
Adrenal cortex
outer portion of adrenal gland; divided into 3 zones
3 zones of adrenal cortex
Zona glomerulosa
Zona fasciculata
Zona reticularis
Zona glomerulosa
outer layer; secretes Mineralocorticoids
Minerlaocortocoid
(esp. Aldosterone) sodium in blood up; potassium down
Zona fasciculata
middle layer; secretes glucocorticoids
Glucocorticoids
esp. cortisol; organic metabolism and stress
zona reticularis
Inner layer; synthesizes gonadocorticoids
Gonadocorticoids
Sex hormones; effects in adults esp. insignificant
Adrenal medulla and hormones
The innpart of an adrenal gland, consisting of cells that secrete epinephrine, norepinephrine, and a small amount of dopamine in response to stimulation by symphathic preganglionic neurons
Chromaffin cells
secrete adrenal medulla hormones; are regaurded as modified postganglionic cells of S.N.S.; are directly innervated by preganglionic fibers of the sympathetic division of the A.N.S.
Hormones include:
Epinephrine & norepinephrine
Epinephrine
Hormone secreted by adrenal medulla
80% of total secretion
sympathomimetic
responsible for fight or flight response
Norepinephrine
A hormone secreted by the adrenal medulla that produces actions similar to those that result from sypathetic stimulation
Adrenal Glands
2 glands located superior to kidneys
Adrenal cortex
outer portion of adrenal gland; divided into 3 zones
3 zones of adrenal gland
Zona glomerulosa
Zona fasciculata
Zona reticularis
Zona glomerulosa
outer layer; secretes Mineralocorticoids
Minerlaocortocoid
(esp. Aldosterone) sodium in blood up; potassium down
Zona fasciculata
middle layer; secretes glucocorticoids
Glucocorticoids
esp. cortisol; organic metabolism and stress
zona reticularis
Inner layer; synthesizes gonadocorticoids
Gonadocorticoids
Sex hormones; effects in adults esp. insignificant
Adrenal medulla and hormones
modified posterior ganglia of A.N.S.
Chromaffin cells
secrete adrenal medulla hormones; are regaurded as modified postganglionic cells of S.N.S.; are directly innervated by preganglionic fibers of the sympathetic division of the A.N.S.
Hormones of adrenals include:
Epinephrine & norepinephrine
Epinephrine
Hormone secreted by adrenal medulla that produces actions similar to those that result from sypathetic stimulation
Norepinephrine
A hormone secreted by the adrenal medulla that produces actions similar to those that result from sypathetic stimulation