Anatomy- Chapter 26

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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


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