L28 Adrenal Glands Flashcards
The adrenal glands are located on the…
Top of the kidneys
A transverse section of the adrenal gland shows ? surrounded by ?
Medulla surrounded by cortex
The adrenal medulla is made from which type of tissue?
a) muscle
b) epithelial
c) neuronal
d) connective
c) neuronal
The further development of the neuronal cells in the medulla to form mature nerve cells (with axons etc.) is prevented by…
Cortisol
Adrenalin is which type of hormone?
a) amino acid
b) steroid
c) lipid
a) amino acid
Adrenalin is released from the…
Adrenal medulla
Adrenalin is also known as…
Epinephrine
The cortex is divided into 3 layers…
- Zona glomerulosa
- Zona fasciculata
- Zona reticularis
(from inner to outermost)
The zona glomerulosa produces…
Aldosterone
The zona fasciculata produces…
Cortisol and androgens
Mainly cortisol
The zona reticularis produces…
Cortisol and androgens
Mainly androgens
The main product of the adrenal glands by mass are…
Androgens from the Zona reticularis
The main product of the adrenal medulla is…
Adrenalin (epinephrine)
The cortex produces steroid hormones, so is said to be…
Steroidogenic
Aldosterone is a major…
Mineralocorticoid
Mineralocorticoids influence…
Salt and water balance
50-70% of aldosterone is bound to…
Albumin in the plasma
Aldosterone has a half life of only 15-20 minutes. Thus, like all steroid hormones, it is…
Produced on demand
The release of aldosterone is triggered mainly by…
Angiotensin II
Cumulatively, the effects of aldosterone ( increase / decrease ) blood pressure…
Increase
The production of cortisol starts with the release of ? from the hypothalamus…
Corticotropin-releasing hormone (CRH)
CRH binds at corticotrophs in the…
Anterior pituitary
In response to CRH, the anterior pituitary releases…
Adrenocorticotropic hormone (ACTH)
ACTH triggers release of…
Cortisol by the adrenal cortex
