Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:60. A 33-year-old man comes to the physician because he and his wife have been unable to conceive a child for the past 2 years. He is a research scientist who has been working on a male contraceptive
drug that selectively impairs function of the seminiferous tubules without affecting Leydig cells. Laboratory studies show:
Serum
Testosterone
670 ng/dL (N=300-1200
ng/dL)
Luteinizing hormone
Follicle-stimulating hormone
Semen analysis
12 mIU/mL
45 mIU/mL
no sperm seen
Decreased production of which of the following is most likely responsible for the increased serum concentration of follicle-stimulating hormone in this patient?
A) Estradiol
B) Inhibin
OC) Progesterone
OD) Prolactin
E) Prostate-specific antigen
Testosterone
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