NR 283 FINAL EXAM CHAMBERLAIN QUESTIONS WITH CORRECT VERIFIED ANSWERS | 100% PASS (A+ CERTIFIED)

NR 283 FINAL EXAM CHAMBERLAIN QUESTIONS WITH CORRECT VERIFIED ANSWERS | 100% PASS (A+ CERTIFIED) What are hormones? Correct answer chemical messengers What cells do hormones affect? Correct answer target cells Explain hormone feedback system Correct answer + feedback= yes, make more! - feedback= knock it off, we have enough! What are hormones released in response to? Correct answer -altered homeostasis -to maintain levels of other hormones Explain the thyroid cascade (+) 1 Correct answer -hypothalamus gets + message to release trh -trh sends + message to pituitary -pituitary gets + message to release tsh -tsh sends + message to thyroid gland -thyroid releases th to all cells Explain the thyroid cascade (-) Correct answer -hypothalamus gets - message to stop trh -no trh sends - message to pituitary -pituitary gets - message to stop tsh -no tsh sends - message to thyroid gland -thyroid stops th to all cells Water soluble hormones Correct answer -non-steroidal -ex. Insulin -move around easily in the vessels -need messenger proteins to get into cells (past the fat later of cell membrane) 2 Fat soluble hormones Correct answer -steroidal -ex. Testosterone -move easily into cells -need to be carried in the bloodstream Down regulation Correct answer -decreased sensitivity to a hormone -"so tired of seeing you.. Go away!" -ex. Dm ii Up regulation Correct answer -increased sensitivity to a hormone -"i haven't seen you in a while! Come on in!" -ex. Reversing dm ii What causes endocrine disorders? 3 Correct answer -tumors: most common -target cell resistance (eg. Dmii) -congenital defects (eg. Too much growth hormone) -hyperplasia (eg. Goiter) -autoimmune disease What is siadh? Correct answer -syndrome of inappropriate antidiuretic hormone -increased adh that creates a hypoosmolar state -more water than solutes -hyponatremia Causes of siadh Correct answer -tumor on pituitary gland (makes adh) -occasionally after surgery meds S/s of siadh Correct answer -from hyponatremia 4 -concentrated urine -confusion Irrational thirst (na+/h2o imbalance) -impaired taste (decreased na+) -muscle twitching What is diabetes insipidus? Correct answer -decreased adh= severe hydration -hyperosmolar state -more solutes than h2o Causes and treatment of diabetes insipidus Correct answer -head trauma -pituitary tumor -renal disease -treatment: vasopressin (artificial adh) S/s pf diabetes insipidus Correct answer -from dehydration