Ch. 28
The enzymes needed to bore into the corona radiata reside in which portion of the sperm?
Acrosomal cap
Which of the following do(es) NOT contribute to semen production?
Endometrial glands
Which of the following is not a peripheral effect of testosterone?
Facilitates both spermatogenesis and spermiogenesis
Which of the following terms is not specifically used to describe egg and sperm?
Gonads
Which of the following is true regarding meiosis?
Homologous chromosomes separate during meiosis I, and sister chromatids separate during meiosis II.
What hormone produced by the nurse cells depresses the formation of FSH and provides a negative feedback mechanism for the control of spermatogenesis?
Inhibin
Which hormone acts to reduce the rate at which the anterior pituitary produces FSH?
Inhibin
Which cells in the testes are responsible for producing testosterone and other androgens?
Interstitial cells
What happens to the chromosome number as a result of meiosis?
It is reduced by half.
What is the hormone that directly stimulates testosterone production?
LH
Which statement about oogenesis mentions the one characteristic that is the same in spermatogenesis and oogenesis?
Meiosis in oogenesis reduces the chromosome number by half.
Which correctly describes mitosis and meiosis?
Mitosis creates genetically identical cells, whereas meiosis creates genetically unique cells.
Which of the following is not consistent with benign prostatic hyperplasia (BPH)?
Occurs as estrogen levels drop
The functions of the sustentacular cells (nurse cells) in the male include all of the following except?
Secretion of testosterone
What is produced by spermiogenesis?
Sperm
For a sperm to be able to fertilize an egg, it must undergo capacitation, which does not involve what process?
Sperm mixing with secretions from the bulbourethral gland
Which cells in the seminiferous tubules regularly undergo mitosis?
Spermatogonia
Which of the following states the correct order in which are cells produced in spermatogenesis?
Spermatogonium a primary spermatocyte a secondary spermatocyte a spermatid a sperm
Which of the following is not true of testosterone?
Testosterone is a protein.
Which of the following does not occur during spermiogenesis?
The mitochondria and Golgi apparatus are packaged into the head of the sperm.
Which of the following is accurate regarding the events of fertilization?
Two haploid gametes combine to make the diploid zygote.
Enzymes that help the sperm penetrate the ovum, or egg, are in the ________ of the sperm cell.
acrosome
Seminiferous tubules and newly produced sperm are separated from the general circulation and the immune system by all of the following except ______________.
blood-brain barrier
When sperm become motile and fully functional, they have undergone __________.
capacitation
The hormone that promotes spermatogenesis along the seminiferous tubules is __________.
follicle-stimulating hormone (FSH)
Men over the age of 50 are periodically screened for prostate cancer by measuring the blood for elevated levels of ______________.
prostate specific antigen (PSA)
