Be 4. 5. 6. Hormones are released into the blood: a. Atrelatively constant levels b. In large amounts in response a stimulus ¢. In cyclic fashion d. All of the above ‘When hormone binds to a nuclear receptor a. DNA produces mRNA b. G proteins are activated . The receptor-hormone complex cause ion channel to open or close d. The cell’s response is faster than when a hormone binds to membrane bound receptor. The pituitary gland a. Develops from the floor of the brain 7\ b. Is stimulate by hormone produced in the midbrain re ? ( ef c. Secretes three major hormones ti aos d. both aandb \ Cy “s) wey x The hypothalamo-hypophyseal portal system: L ‘a. contains one capillary bed b. carries hormones from the anterior pituitary to the body ¢. carries hormones from the hypothalamus to the anterior pituitary d. carries hormones from the hypothalamus to the posterior pituitary. Oxytocin is responsible for a. preventing milk release from the mammary gland b. preventing goitre . causing contraction of uterus d. maintaining normal calcium levels Growth hormone a. increases the usage of glucose b. Increases the breakdown of lipid ¢. decreases the synthesis of protein d, decrease the synthesis of glycogen.7. Which of these terms a. Synergistic ractions of insulin and glucagon: iain gh Len ©. Permissive ‘ ea Te lene 4. Cooperative J ae 8. Whi ode i hich of the following is inconsistent with the diagnosis off{Grave’s disease? ] a. Increased heart rate b. Exophthalmos ©. Increased plasma levels of triiodothyronine (Ts) _—14. Increased plasma levels of thyroid-stimulating hormone TS Ff best describes the inte 9. Patient has an elevated plasma thyroxine (T4) concentration. a low plasma thyroxin stimulating hormone (TSH) concentration, and thyroid and that is smaller normal. Which of the following is the most likely explanation for these finding: a. Patient has a lesion in the anterior pituitary that prevent TSH secretion’, \ b. Patient is taking propylthiouracil ¢. Patient is taking exogenous thyroid extract — A d. Patient is consuming large amounts of iodine. nw. Dee -year-old man has “puffy” skin and is lethargic. His plasma thyroid lating hormone concentration is low and increases markedly when he is thyrotropin releasing hormone. Which of the following is the most likely 1s josis? Hyperthyroidism due to a thyroid tumor Hyperthyroidism due to an abnormality in the hypothalamus lypothyroidism due to an abnormality in the thyroid lypothyroidism due to an abnormality in the hypothalamus it has hypothyroidism due to a primary abnormality in the thyroid gland. plasma level of which of the following would most likely be reported?ssociated with thyrotoxicosis? i a fottowing would least likely be | a. Tachycardia b. Increase appetite ¢. Somnolence |. Increase sweating etion rule of TSH declines a. The sec ptoms Oo} b. The person develops sym] The portion develops hypercalcemia e person secret more TRH f hypothyroidism jin: secreted by the parathyroid glands Is increase when blood calcium levels decrease ses blood calcium levels to decrease ficiency results in weak bones and tetany oid hormone levels increase, which of these conditions is expected? eoclast numbers are increased jum absorption from the small intestine is inhibited m reabsorption from the urine is inhibited ive vitamin D is formed in the kidney medulla isol its major secretory product ses its sections during excretion ed modified portion of the sympathetic division of the ANS. ve. increase ium levels increase n levels increaseLN 18.The release of co, Which of these hormo a. CRH-secreted by cortisol b. CRH-secreted by the an cortisol ©: ACTH-secreted by the cortisol d. ACTH-secreted by Produce cortisol rtisol from the adrenal cor tex is regulated by other hormones ‘d with its origin and function? stimulates the adrenal cortex to secrete nes Correctly matche ¥ the hypothalamus, terior pituitary, stimulates the adrenal cortex secrete hypothalamus simulates the adrenal cortex to secrete ¥ the anterior pituitary, stimulates the adrenal cortex to 9.Insulin increases a. the uptake of glucose by its target tissues b. the breakdown of protein ¢. the breakdown of fats . glycogen breakdown in the liver hich of these tissue is least affected by insulin a. Adipose tissue b. Heart ¢. Skeletal muscle d. Brain ich one of the following stimuli will increase glucagon secretion from the panerea! a. Increase plasma glucose level b. Reduced plasma glucose level Somatostatin Increase in plasms free fatty acids level estosteron produced in large quantities by the ovaries cause fat deposition in the hips and thigh increases muscular development ontrol the menstrual cycle23.sevi i teinizing hormor en days after ovulation, pituitary secretion of luteinizing ne (Lay) datreare ica wi } is in secretion? pidly, i decrease in sec! idly. What is the cause of this : le: a. The cna pituitary and becomes unresponsive to the stimulatory effect gonadotropin-releasing hormone (GnRH) b. Estrogen from the developing follicles exert hypothalamus ; , ¢. The rise in body temperature inhibits thalamic release of GnRH ne 4. Secretion estrogen and progesterone by the corpus luteum supp hypothalamic secretion of GnRH and pituitary secretion of LH sa feedback inhibition on 24-Spermatogenesis is regulated by negative feedback control system in which follicle stimulating hormone (FSH) stimulates the stars in sperm cell formation. the negative Feedback signal associated with sperm cell production that inhibits pituitary formation of FSH? i a. Testosterone b. Inhibin ¢. Estrogen d. Luteinizing hormone 25.During the 12-hr period preceding ovulation, which of the following is true? a. The plasma concentration of estrogen is rising b. The surge of luteinizing hormone is secreted from the pituitary ¢. The age occur immediately after the formation of the corpus luteum d. The surge followed immediately by a fall in the plasm concentration of progesterone ‘hen do progesterone level rise to their highest point during the female nonal cycle? ovulation and the beginning of menstruation diately before ovulation 1¢ blood concentration of luteinizing hormones is at its highest point n ends estrogen levels in the blood rise rapidly. What is the sou! g follicles of the ovaries).all of these are amine except ‘A. thyroid B.GH C .catcholamine D non of above 29.steroid hormones characterized by ) By A short duration B synthesis from amino acide C work on intracellular receptor D prolactin is steroid hormone rmones is ical substance secret by exocrine gland ical substance secret by endocrine gland work on near cell ical substance secret by endocrine gland affect distal target cell jical substance secret by nurons one that regulate by positive feed back these hormones not control by negative feed back controlled hormones isyh Cu s except 34.adenohypophysial secret all these hormones AGH B prolactin € vasopersin D TSH 35. hypothalamus control thyroid hormone by secret ae fy A TSH B TRH C ACTH D GnRH 36.about anterior pituitary one false its master of endocrine gland controlled by direct axon sended from hypothalamus secret hormones that control other gland 9 GH one of anterior pituitary hormones 7.one of these hormones not controlled by anterior pitutary ction of prolactin is etion of milk in lactating woman ction of milk sport of sperm in malea NEO ag '40.about GH one true ‘A steroid hormone B act on musle only but no effect on bone : C secret by post pituitary D regulated by secretion of GHRH from hypothalamus 41.increase secretion of GH before puberty lead to Aacromegaly B giganism C dwarfism = D phenochromocytom 42.acromegaly caused by A excessive release of thyroid hormone B excessive release of aldosterone reduce secretion of GH increase secretion of GH in adult about GH one true its anabolic hormone ipogenic hormone ead to hypoglycemia igher in adult ,low in young hich of the following is correct pair oiter growth hormone ddison disease ADH henochromocytoma aldosterone ves disease thyroid hormone sma level of calcium isthe following except 46.diabetes mellitus may present by A polyuria B polydipsia C polyphagia D alkalosis 47.20 .which of these of islant of langerhanse secret insulin Aalpha cell B beta cell C delta cell D fcellept 48.concerning vit D all are true except A increase cat++ absorption from intestine B increase ca++ reabsorption from kidney C its deficiency in adult lead to rickts increase ca++ deposition In bone .which of these factor increase release of glucagon increase glucose level in blood somatostatine fasting non of above |. which of these hormones not secret by adrenal medulla these factors dose not increase insulin secreation levelPhysiology 52.Cushings syndrome caused by A excessive insulin B excessive cortisone C excessive aldosterone D excessive thyroid hormone 53.which of these hormones have anti-inflammatory action A aldosterone B cortisone CGH D prolactin 54.about glucocorticoid A laed to hyperglycemia B have antiallergic action C increase sodium reabsorption D all of above 55.aldosterone controlled by A level of K+ B renin angiotensine C ACTH Dall of above 56.excessive aldosterone secretion lead to A cones syndrome B cushing syndrome C acromegaly D none of above 7.adrenaline action include all except iperglycemia or flight heart rate GIT motility omocytoma caused by tumor in tePhysiology 59.activation of vit D in renal by action of A 25 hydroxylase B | hydroxylase C 1-2Shydroxylase D non of above 60.concerning PTH A its steroid hormone b secret by parafollicular cell ¢ lead to increase level of ca in blood d increase ca excecretion in renal 61.one of these hormones not acting by CAMP AGH B cortison C ADH DPTH 62.ostiomelasia caused by A decrease of ca level in children B decrease vit d in adult C increase ca level in adult D increase ca level in children decrease blood pressure lead to increase level of all except A aldestron adrinalin DH both aldosterone and cortisone lead to in female commonly byjoo.cetany caused by Aaccrease level of Ca p decrease leve of K C decrease level of Na D decrease level of cl 67.can not lead to hyperglycemia A insulin BGH C cortisone D thyroid hormone 68.regarding thyroid hormone one true A decrease oxygen consumption by tissue B synthesis from tyrosine C decrease basal metabolic rate D regulated by ACTH secreted from pituitary 69.aldosterone action one TRUE A increase secretion of Na in renal tubules B increase K+ excretion from renal C decrease glucose D NON OF ABOVE 70.goiter is a enlargement in adrenal gland b enlargement in pituitary gland c enlargement in thyroid gland dnon of above»< ee Ue MEDICIN=-AE _ plaudd Jolad og sa Keep walking towards your goal tme/medicine_46