Chapter 21: The Male Reproductive System
Which of the following accurately describes spermiogenesis?
b. Involves stem cells, meiosis, and spermatogenesis
c. Involves cytodifferentiation of early spermatids
d. Occurs in diploid cells
e. Results in the formation of primary spermatocytes
A man with a pituitary gonadotrophic tumor causing hyposecretion of follicle-stimulating hormone (FSH) is most likely to exhibit which condition?
a. No symptoms, since he has no ovarian follicles
b. Loss of libido (sex drive)
c. Low serum testosterone levels
Interstitial cells of Leydig have an important function in male gamete production. Because of this function, which of the following organelles is abundant within these cells?
b. Smooth endoplasmic reticulum
While studying a germ cell line developed from a patient’s testicular biopsy, the researcher notes that colchicine-treated cells blocked in metaphase have 46 chromosomes. From which of the following regions of the male genital tract would you expect these cells to have originated?
a. Within the rete testis
b. At the basal lamina of the seminiferous tubule
c. In the middle region of the germinal epithelium
d. Within the adluminal compartment of the seminiferous tubule
e. Within the straight tubules
Which of the following organs is normally characterized by the accumulation of corpora amylacea with increasing age?
c. Bulbourethral (Cowper) glands
Within the male reproductive tract, stereocilia project from cells lining which of the following regions?
b. Seminiferous tubules