Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

36 Cards in this Set

  • Front
  • Back
Pituitary- also called?
Define Pituitary
A small endocrine gland occupying the hypophyseal fossa of the sphenoid bone and attached to the hypothalamus by the infundibulum.
"master gland"
No longer the pituitary, but the hypothalamus!
Size of pituitary or hypophysis?
Pea sized
Location of Pituitary or hypophysis
hypophyseal fossa (pouch)
Hypophyseal fossa
a depression on superior surface of sphenoid bone that houses pituitary glands
Divisions of pituitary
Anterior Lobe
Posterior Lobe
Pars Intermedia
Anterior lobe, also called?
Anterior lobe
in embryo-migrates from upper pharynx to its adult position
Hypophoseal (rathke's) pouch
outgrowth of ectoderm from roof of mouth- anteriorpituitary develops
Location of rathke's pouch?
Anterior lobe
Posterior lobe, also called?
Posterior lobe
Does not synthesize hormones, stores and releases hormones
Neurohypophyseal bud
Develops and grows down from hypothalamus
Location fo nuerohypophyseal bud?
posterior lobe
Pars intermedia
atrophies in fetal development-is gone ias a lobe in adults- but its cell migrate into the ant. pituitary and persist
Neurosecretory cells
Actually secrete hypothalamic releasing and inhibiting hormones
Regulating hormones (factors)
At least 9 known releasing and inhibiting hormones; are "tropic hormones" -from neurosecretory cells- stimulate or inhibit hormones secreted from ant. pituitary.
What permits regulating factors to flow from hypothalmus to anterior pituitary?
Vessels and capillary networks
How many major hormones are there?
Tropic hormones
a hormone whose target organ is another endocrine gland
Adrenocorticotropic hormone
ACTH: stimulates adrenal cortex
Thyroid-stimulating hormone
TSH: stimulates thyroid gland
Gonadotropic hormones:
Follicle stimulating hormone
Male- stimulates sperm production

Female- development of egg (ovum); estrogen production
Luteinizing hormone
Male-interstitial cell development and thus testosterone up

Female- w/FSH causes ovulation; progesterone up
Non-tropic hormones
3- hGH, melanocyte- stimulating hormone, PRL
Growth hormone
hGH: increased protein anabolism in cells
Melanocyte-stimulating hormone
increase in melanin granules in melanocytes
Male- testosterone production up

Female- maintain effect of lutenizing hormone
OT: a nuerosecretory cell, smooth muscle contraction of uterus during labor; of mammary glands thus stimulating milk ejection
Do neurosecretory cells synthesize hormones?
Anti-diuretic hormone
ADH: a nuerosecretory cell, also called "vasopressin"- decrease urine volume; constriction of arterioles during hemorrage
Where do axonal endings of nuerosecretory cells terminate?
neurohypophysis (posterior to pituitary) also stores hormones
Why is the neurohypophysis not considered to be a true endocrine gland?
Because it doesn't synthysize hormones; it sores and releases them.
Supporting cell of the posterior pituitary