Friday, November 12, 2010

21 催產素(oxytocin)的主要作用為何?
促進子宮鬆弛 促進排乳作用(milk ejection)
抑制黃體分解(luteolysis) 抑制攝護素F2α(PGF2α)的分泌

answer is milk ejection!

think oxytocin: contraction! contraction uterus, contration papillary muscle!!!!

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22 一位35歲女性主訴:畏寒、水腫、無月經、且時有乳汁分泌。血液分析發現甲狀腺激素數值過低,則此病患之無月經及泌乳現象最可能由於下列何種激素之影響?
 下視丘所分泌之多巴胺(dopamine)刺激腦下垂體分泌泌乳素(prolactin)
下視丘所分泌之性釋素(GnRH)刺激腦下垂體分泌促黃體素(LH)
下視丘所分泌之甲釋素(TRH)刺激腦下垂體分泌泌乳素
下視丘所分泌之多巴胺刺激腦下垂體分泌促黃體素

answer C

PLEASE FINISH READING ALL QUESTIONS, EVEN IF THEY ARE IN CHINESE, HARD TO READ!!!!
THIS HAS NOTHING TO DO WITH DOPAMINE!!!!
HYPOTHYROIDISM ONLY!
TRH EXPECTED TO GO UP, THUS STIMULATING ALSO THE PROLACTIN
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23 完全切除甲狀腺,除造成體內甲狀腺素缺乏之外,尚可能導致那2種激素缺乏?
 降鈣素(calcitonin)及胰島素 胰島素及甲促素(TSH)
甲促素及副甲狀腺素(parathyroid hormone) 副甲狀腺素及降鈣素

answer D:
Calcitonin is a 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells (also known as C-cells) of the thyroid,
The hormone participates in calcium (Ca2+) and phosphorus metabolism. In many ways, calcitonin counteracts parathyroid hormone (PTH).
More specific, calcitonin affects blood Ca2+ levels in four ways:
Inhibits Ca2+ absorption by the intestines[5]
Inhibits osteoclast activity in bones[6]
Inhibits phosphate reabsorption by the kidney tubules[7]
Calcitonin inhibits tubular reabsorption of Ca2+, leading to increased rates of its loss in urine.[7]
Secretion of calcitonin is stimulated by:
an increase in serum [Ca2+][8]
gastrin and pentagastrin.[9]
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24 雄性素(androgen)可在胎兒的那2個器官生成?
 肺及肝 肝及腎上腺 腎上腺及胃 胃及肺

ans B
lung/ adrenal gland

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