the pituitary gland: anterior lobe
DESCRIPTION
The Pituitary Gland: Anterior Lobe. Nikki Goodwin & Bailey Bench . Location. It is the front third of the pituitary gland, located in brain. It is a protrusion off the bottom of the hypothalamus and is connected through the infundibulum. . Hormones. Somatotropins : human growth hormone (HGH) - PowerPoint PPT PresentationTRANSCRIPT
Location It is the front third of the pituitary
gland, located in brain. It is a protrusion off the bottom of the
hypothalamus and is connected through the infundibulum.
Hormones Somatotropins: human
growth hormone (HGH) Thyrotropins: thyroid
stimulating hormone (TSH)
Corticotropins: adrenocorticotrophin hormone (ACTH) & beta-endorphin
Lactotropins: prolactin (PRL)
Gonadotropins: luteinizing hormone (LH) & follicle stimulating hormone (FSH)
HormonesSomatropins: growth of the bodyThyrotropins: stimulates metabolismCorticotropins: stimulates secretion of
glucocorticoid steroid hormones from adrenal cortex cells
Lactotropins: maturation of mammary glands
Gonadotropins: regulates normal growth, sexual development, and reproductive function
Maintaining Homeostasis
The pituitary gland releases hormones throughout the body when they are needed to maintain homeostasis.
Feedback Mechanisms & Antagonistic Hormones
The release of most hormones is controlled using negative feedback mechanisms. The hypothalamus detects changes in the body through the peripheral nervous system and senses the change needs to be fixed. Then it sends a message to the pituitary to release the hormone that fixes the problem.
Releasing & Release-Inhibiting Hormones
Releasing: contains six secretory cells that release their hormones in response to hormones reaching them from the hypothalamus
Release-Inhibiting: inhibits the release of hormones
-growth hormone inhibiting hormone
-prolactin inhibiting hormone
Failure of the Pituitary Gland
Since it is the control for other glands in the body, it can stimulate or inhibit the release of hormones in other glands, like the adrenal glands, thyroid glands, or sex organs.
Can also cause gigantism or dwarfism
Corrections of the Pituitary GlandDepending on the cause there are many
different treatments. Injections or medication can be taken to
replace hormones that were not secreted by the pituitary gland.
Cited Sources http://www.innerbody.com/image/endo01.html http://users.rcn.com/jkimball.ma.ultranet/Biol
ogyPages/P/Pituitary.html
http://www.sciencedaily.com/articles/a/anterior_pituitary.htm
http://homepage.smc.edu/wissmann_paul/intranetstuff/dept/scienceLRC/wissmann_site/pituitary.htm
http://pituitary.ucla.edu/body.cfm?id=47 http://www.reference.com/motif/health/what-h
ormones-does-the-pituitary-gland-secrete