click below
click below
Normal Size Small Size show me how
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 |