39 下列那一項有關男性生殖系統的敘述是正確的?
(A)黃體激素(LH)作用到 Sertoli cells 使其合成 testosterone
(B)血液中的 testosterone 只有 0.5%~3%未與蛋白質接合
(C)男性血液中的 testosterone 80%來自於睪丸,20%來自於腎上腺
(D)性荷爾蒙接合球蛋白(sex hormone-binding globulin)濃度會隨老化而減少
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統計: A(0), B(9), C(11), D(7), E(0) #1060594
統計: A(0), B(9), C(11), D(7), E(0) #1060594
詳解 (共 1 筆)
#6289876
C) 95% of the body's testosterone is produced in the testes (normal young male produces about 7mg/day), less than 5% is derived from adrenal secretions. At around 70 years old, testosterone secretions decrease to about 4 mg per day.
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