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Ap ch 18 B
Question | Answer |
---|---|
The pituitary gland consists of 2 endocrine glands | anterior lobe-adenohypohysis, posterior lobe-neurohypopysis |
another name for the anterior lobe is | adenohypohsis |
another name for posterior lobe | neurohypopsis |
Hormones of the anterior are stimulated by what?? | releasing hormones of hypothalamus,suppressed by inhibiting hormones |
what connects the pituitary to the hypothalamus & is the means by which regulatory hormones travel to pituitary | Hypophyseal portal system |
What is LTH(Lactogenic hormone or lutetropic hormone)& where is it | prolcatin, it is in the anterior pituitary gland |
What does prolactin promote | during pregnant- breast development after delivery- initiates milk secretion |
What does prolactin help maintain | Corpus Luteum |
What is the growth hormone | Somatotropic |
What does somatrotropic do?? & where is it | accelerates protien anabloism(synthesis), & promotes growth & in the anterior pituitary gland |
What parts are sensitive to somatotropic | skeletal muscle cells & Chondrocytes |
What disorder is caused by deficient somatotropic | dwarfism |
what does liver & other cells produce ?? | insunlike growth factors (IGF'S) that increase amino acid uptake |
Hormones that have a stimulating effect on other endocrine gland is called | Tropic Hormones |
What is thyrotropins & where is it | Thyroid stimulating hormone (TSH), in the anterior pituitary gland |
What does TSH do | promotes growth & development of thyroid gland , stimulates thyroid gland to secrete thyroid hormone ( throxine) |
What is ACTH & where is it | Adrencorticotropin in the anterior pituitary gland |
What does ACTH do?? | promotes growth & development of adrenal cortex, stimulates cortex to secrete cortisol & other glucorticoids |
What does follicle-stimulating hormone(FSH) do & where is it | stimulates graafian follicle to start to grow & mature,Stimulates follicle cells to secrete estrogen {egg formation}, in the anterior pituitary gland |
In males, FSH stimulates the development of seminferous tubles | maintain spermotogenesis |
Luteiniing hormone(LH) is a ? & where is it | Tropic hormone, in the anterior pituitary gland |
what does lutenizing hormone(LH) do | acts with FSH to cause complete maturation of follicle & brings about ovaluation, stimulates the formation of corpus luteum(lutenizing effect), stimulates corpus luteum to secrete progesterone & estrogen |
In males what is LH called | Interstial cell stimulating hormone ICSH |
What does the ICSH do | Stimulates intersital cells in testes to develop & secrete testosterone |
What is another name for melancoyte stimulating hormone(MSH)& where is it | Intermedin, in the anterior pituitary gland |
What does MSH do | produced by pars intermedia,tends to produce increased pigmentaion of skin |
What controls the secretion of hormones | hypothalmus |
What are releasing hormones | neurosecretions produced in the hypothalmus that reach anterior pituitary gland via blood in piturary portal system |
What does the releasing hormone do | regulates hormone production |
where does the negative feedback mechanisms operate? | btwn target glands & anterior lobe of putitary |
Where is ADH | In the posterior pituary gland |
what is the ADH | Anti-duretic Hormone |
Where does ADH act on ? | kidneys |
What is another name for ADH | vasopressin |
What does ADH synthesizes by | neurons in supraoptic nucleus of hypothalmus |