Anatomy- Chapter 26
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
Which muscle is part of the spermatic cord?
Cremaster muscle
Which of the following structures are not found in the spermatic cord?
Dartos muscle and cremaster muscle
For normal human reproduction to occur, which of the following organ systems would not necessarily have to function normally?
Digestive system
The body of the spermatic cord is a structure that includes which of the following?
Ductus deferens, blood vessels, nerves, and lymphatics
Powerful, rhythmic contractions in the ischiocavernosis and bulbocavernosus muscles of the pelvic floor produce what result?
Ejaculation
The secretions of the seminal vesicles are discharged into the ____________.
Ejaculatory duct
The process of pushing fluid and sperm into the prostatic urethra is called ___________.
Emission
What event during sexual intercourse happens in the male but does not happen in the female?
Emission and ejaculation
The reproductive structures in the perineal region are called ___________.
External genitalia
Which of the following is not a peripheral effect of testosterone?
Facilitates both spermatogenesis and spermiogenesis
The hormone that promotes spermatogenesis along the seminiferous tubules is ______________.
Follicle-stimulating hormone (FSH)
Which of the following hormones is not properly matched with its source and primary effects?
Follicle-stimulating hormone (FSH) is produced by the anterior pituitary and stimulates the interstitial cells of the testes to produce testosterone
What is the term for the organs that produce gametes and hormones?
Gonads
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 1, the sister chromatids separate during meiosis 2
Which correctly describes mitosis and meiosis?
Mitosis creates genetically identical cells, whereas meiosis creates genetically unique cells
What would happen if a male were unable to contract the ischiocavernosus and bulbospongiosus muscles?
No ejaculation
What division of the nervous system participates in the sexual arousal of both males and females?
Parasympathetic nervous system
Which of the following male reproductive structures is responsible for conducting semen into the vagina of the female?
Penis
Which reproductive gland encircles the urethra as it leaves the bladder and produces an acidic fluid that contributes to semen?
Prostate gland
The prostate, seminal vesical, and bulbourethral glands do NOT
Provide chemicals to make the female's vagina more acidic
What is the function of the ducts of the reproductive systems?
Receiving and transporting gametes
What is the function of the dartos and cremaster muscles?
Regulation the temperature of the testes
The fleshy pouch that suspends the testes outside of the body cavity is the ________________.
Scrotum
The external genitalia of the male include the ___________.
Scrotum and the penis
The seminal vesicles __________.
Secrete a fructose-rich, mucoid substance
The functions of the sustentacular cells (nurse cells) in the male include all of the following except?
Secretion of testosterone
The accessory organs in the male that secrete into the ejaculatory ducts and the urethra are the ______________.
Seminal vesicles, prostate gland, and bulbo-urethral glands
Which of the following is not found in seminal fluids?
Smegma
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 of the following states the correct over in which are cells produced in spermatogenesis?
Spermatogoium a primary spermatocyte a secondary spermatocyte a spermatid a sperm
Which cells in the seminiferous tubules regularly undergo mitosis?
Spermatogonia
The male gonad is the _________.
Testis
Which of the following is not true of testosterone?
Testosterone is a protein
Impotence, a common male sexual dysfunction, is ____________.
The inability to achieve or maintain an erection
The enzymes needed to bore into the corona radiata reside in which portion of the sperm?
Acrosomal cap
Enzymes that help the sperm penetrate the ovum, the egg, are in the ___________ of the sperm cell
Acrosome
The process of erection involves complex neural procedures that include _____________.
Increased parasympathetic outflow over the pelvic nerves
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
Which of the following is not true of the epididymis?
It connects the ductus deferens with the seminal vesicle
What happens to the chromosome number as a result of meiosis?
It is reduced by half
What is the hormone that firectly stimulates testosterone production?
LH
Which of the following does not occur during spermiogenesis?
The mitochondria and Golgi apparatus are packed into the head of the sperm
Which of the following statements about the bulbourethral gland is incorrect?
They contribute approximately 25 percent of the semen volume
The dense layer of connective tissue that directly covers the testes is the ___________.
Tunica albuginea
The three masses of erectile tissue that compose the body of the penis are _____________.
Two cylindrical corpora cavernosa and a slender corpus spongiosum
