anterior pituitary Flashcards
anterior pituitary hormones (6)
tropic hormones (4)
follicle stimulating hormone (FSH)
luteinizing hormone (LH)
adrenocorticotropic hormone (ACTH)
thyroid stimulating hormone (TSH)
FLAT = tropic
+
prolactin (PRL)
growth hormone (GH)
all anterior pituitary hormones are
protein hormones
function of FSH (follicle stimulating hormone)
stimulates gamete production (egg and sperm) by stimulating granulosa cells (female) and sertoli cells (male)
function of LSH (luteinizing hormone)
promoted production of gonadal hormones
theca cells
granulosa cells
leydig cells
in LH what cells are women
theca and granulosa
in LH what cells are male
leydig and sertoli
theca cells make what
androgens
granulosa cells concert androgens to
estrogen
leydig cells make
testosterone
function of ACTH (adrenocortitropic hormone)
stimulates adrenal cortex to release cortisol (helps the body to resist stress)
regulation of ACTH release
triggered by a faulty rhythm of CRH
internal and external factors including stressors can alter release of CRH
function of TSH (thyroid stimulating hormone)
stimulates normal development and secretory activity of thyroid gland
what are the thyroid hormones
triiodothyronine T3
thyroxine T4
what is the function of PRL (prolactin)
stimulates milk production
regulation or PRL
controlled by prolactin inhibiting hormone PIH aka dopamine
hypersecretion of prolactin inhibits what
release of gonadotropin releasing hormone (GnRH)
considered natural birth control
growth hormone functions
direct actions on metabolism
1. encouraged use of __ for fuel
2. promotes __ synthesis
3. decreases rate of __ storage
4. promotes __ breakdown
- fat
- protein
- glucose
- glycogen
growth hormone
indirect actions on growth
1. mediates growth via growth promoting proteins such as ___
insulin-like growth factors (IGF)
growth hormone and insulin-like growth factor promote
1. uptake of nutrients —> __ and ___
2. builds __ and deposits __ matrix
3. major targets - __ and __ muscle
- dna and proteins
- collagen and bone
- bone and skeletal muscle
growth hormone hyper secretion results in
gigantism = in children (GH is overly secreted)
acromegaly = in adults (over production of hands and feet)
growth hormone hypo secretion results in
pituitary dwarfism - in children
not enough GH to produce body features
lack of GH but body is still proportional
