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Biochem Steroids
KYCOM Block 4
29
Biochemistry
Graduate
11/19/2012

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Cards

Term
what steroids does the adrenal cortex release
Definition
aldosterone, cortisol
Term
what does aldosterone do
Definition
stimulates renal absorption of Na and excretion of K
Term
what does cortisol do
Definition
increases gluconeogenesis, anti inflammatory, protein breakdown in muscle
Term
what steroids does the ovary release
Definition
esteogen, progesterone
Term
what does estrogen do
Definition
controls menstural cycle, promotes development of female secondary sex characteristics,
Term
what does progesterone do
Definition
secretory phase of uterus and mammary glands, implantation and maturation of fertilized ovum
Term
what does testoestrone do
Definition
stimulate spermatogenesis, promotes development of male secondary sex characteristics, promotes anabolism, masculinization of the fetus
Term
what does too much cortisol cause
Definition
cushing syndrome, hyperglycemia, central obesity, moon facies, weakness fatigability
Term
what does too littel cortisol do
Definition
fasting hypoglycemia, its absence is normal mostly. its absence usually means aldosterone is absent and that is what really causes the problems
Term
what does too much aldosterone cause
Definition
increased Na, decreased K, increased water retention and hypertension
Term
what does too little aldosterone cause
Definition
decreased Na, increased K, large Na loss in urine, hypotension
Term
what does too much testosterone cause
Definition
masculinization of females, early sexual development in males
Term
what does too little testosterone cause
Definition
feminization in males
Term
what does too much estrogen cause
Definition
feminization in males
Term
what does too little estrogen cause
Definition
menopause, infertility
Term
what is the general reason for what are the congenital adrenal hyperplasies
Definition
3-B-hydroxysteroid dehydrogenase deficiency, 17-a-hydroxylase deficiency, 21-a-hydroxylase deficiency
Term
what is the common symptom in all the congenital adrenal hyperplasies
Definition
hyperplasia of the adrenal gland
Term
what does hyperplasia mean
Definition
increased size and cell number
Term
why does hyperplasia occur
Definition
to try and make up for missing hormones
Term
where does the blockage occur in 3-B-hydroxysteroid dehydrogenase deficiency, what does this cause
Definition
begining of the pathway, no alternate route for intermediates leading to an absence of all steroid hormones
Term
what are the symptoms of 3-B-hydroxysteroid dehydrogenase deficiency
Definition
salt in urine, hyponatremia, hyperkalemia, hypotension, feminization of males
Term
where is the blockage in a 17-a-hydroxylase deficiency
Definition
in production of androgens and cortisol
Term
what happens to intermediates in a 17-a-hydroxylase deficiency
Definition
forced through pathway leading to overproduction of aldosterone
Term
what are the symptoms of 17-a-hydroxylase deficiency
Definition
femilization of males, hypernatermia, hypokalemia, hypertension
Term
where is the blockage in a 21-a-hydroxylase deficiency, what does this do to intermediates
Definition
production of cortisol and aldosterone, force them to become androgens
Term
what is the most common congenital adrenal hyperplasia
Definition
21-a-hydroxylase deficiency
Term
what are the symptoms of 21-a-hydroxylase deficiency
Definition
hyponatermia, hyperkalemia, hypotension (salt wasting), vitilization of females, early sexual development of males due to increased andrgens
Term
what does the range of 21-a-hydroxylase deficiency depend on
Definition
residual activity of the enzyme
Term
what is the range of symptoms of 21-a-hydroxylase deficiency
Definition
normal, infertility only, to classic symptoms
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