Ch.4 Male Sexual Anatomy, Physiology, And Exam Questions 10e

Human Sexuality, 10e (Yarber)

Chapter 4 Male Sexual Anatomy, Physiology, and Response

1) Male and female sexual structures

A) derive from the same embryonic tissue.

B) are different from the moment of conception.

C) are determined by the acidity level encountered by the sperm.

D) begin to develop after the sixth month of gestation.

2) The ________ and the ________ are the two external male sexual structures.

A) penis; scrotum

B) vas deferens; testes

C) scrotum; testes

D) epididymis; vas deferens.

3) The penis becomes erect as a result of

A) the exposure of the penile bone.

B) muscle tension.

C) it filling with blood.

D) skin contraction.

4) At the root of the penis, the tips of the corpora cavernosa form the ________ and are anchored by muscle to the pubic bone.

A) frenulum

B) prepuce

C) corona

D) crura

5) The corpus spongiosum

A) secretes a thick, clear, alkaline mucus just prior to ejaculation.

B) fills with blood during arousal and causes an erection.

C) nourishes and transports the mature sperm.

D) aids in the production of sperm and hormones.

6) The frenulum is

A) the rim at the tip of the penis.

B) the loose skin covering the shaft of the penis.

C) a triangular area of sensitive skin that attaches the glans to the foreskin.

D) a gland under the foreskin.

7) The glans penis is important in sexual arousal because it contains a relatively high concentration of ________, making it responsive to stimulation.

A) seminal fluid

B) testosterone

C) melanin

D) nerve endings

8) A triangular area of sensitive skin that attaches the glans to the foreskin is called the

A) vas deferens.

B) frenulum.

C) perineum.

D) crura.

9) Beneath the foreskin are glands that produce

A) endolymph.

B) lochia.

C) chyle.

D) smegma.

10) The prepuce when pulled back exposes the

A) glans.

B) clitoris.

C) endometrium.

D) testes.

11) Which part of the penis is surgically removed by circumcision?

A) the glans

B) the prepuce

C) the crura

D) the frenulum

12) The surgical removal of the foreskin of the penis is called

A) infibulation.

B) circumcision.

C) hysterectomy.

D) vasectomy.

13) Asher, a 1-year-old male child, is Jewish. He undergoes a traditional procedure whereby his foreskin is surgically removed.  This is called_____.

A) dilation and curettage

B) vasectomy

C) partial colectomy

D) circumcision

14) Within each testis are around 1,000 tiny, tightly compressed tubes where sperm production takes place. These tubes are called the

A) seminal vesicles.

B) seminiferous tubules.

C) renal tubules.

D) vas deferens.

15) The seminiferous tubules within each testis merge to form the

A) corpus spongiosum.

B) scrotum.

C) prostate gland.

D) epididymis.

16) When a boy is circumcised, the

A) foreskin is removed.

B) frenulum is enhanced.

C) scrotum is removed.

D) perineum is stretched to form a new hood.

17) Most evidence indicate that the size of a man’s penis is mostly related to

A) his hands

B) his feet

C) his race

D) his genetics.

18) The testes are pulled close to the body, causing the scrotal skin to wrinkle and become more compact. This is mostly due to

A) abdominal muscles.

B) cremaster or dartos muscles.

C) excessive masturbation.

D) vitamin D.

19) The two parallel columns of erectile tissue that extend along the front surface of the penis are called the

A) corpora cavernosa.

B) corpus spongiosum.

C) vas deferens.

D) seminiferous tubules.

20) Which of the following statements about penis size is true?

A) The penis diminishes in size as a result of infrequent opportunities for arousal.

B) The percentage of volume increase during erection is greater in bigger penises than in smaller ones.

C) The primary determinant of penis size is heredity.

D) Penis size is positively related to body size.

21) The scrotum is

A) the male reproductive gland that produces hormones.

B) a pouch of loose skin that holds the testes.

C) a wrinkled protector of the glans.

D) the carrier of sperm from the testes to the urethra.

22) Which of the following muscles within the scrotal sac causes the testes to elevate?

A) the cremaster

B) the buccinator

C) the dartos

D) the risorius

23) In about 3–4% of full-term male infants and more commonly in premature male infants, one or both of the testes fail to descend. This condition is known as

A) strabismus.

B) torticollis.

C) choreoathetosis.

D) cryptorchidism.

24) Amahle, a 20-year-old, gives birth to a premature male child. After the initial examination of the child, the physician informs her that one of the child's testes has failed to descend into the scrotum. In this scenario, the child's condition can be referred to as

A) nyctalopia.

B) cryptorchidism.

C) dysarthria.

D) opisthotonos.

25) Ken and Marie have two children and choose to have no more. The surgery for Ken that prevents transportation of sperm from the testes to the urethra by clipping is called  a(n) ________.

A) mastectomy

B) vasectomy

C) hysterectomy

D) orchiectomy

26) Spermatogenesis takes place within the

A) scrotum.

B) crura.

C) seminiferous tubules.

D) vas deferens.

27) The ________ are structures that encircles the urethra just below the urinary bladder and produces about 30% of the seminal fluid that nourishes and transports sperm.

A) seminal vesicles

B) prostate gland

C) epididymis

D) frenulum

28) In the context of male sex structures, the bulbourethral glands are also known as

A) the Cowper's glands.

B) the vas deferens.

C) the Bartholin's glands.

D) the corpora cavernosa.

29) Jaden is bullied in school because of a physiological condition that has caused the abnormal growth of his breasts. Which of the following is most likely the reason that has triggered this condition in Jaden?

A) His estrogen levels are higher than his testosterone levels.

B) His testosterone production is higher than his progesterone production.

C) The lack of proper functioning of the Cowper's glands has caused the enlargement of breasts.

D) The inefficient functioning of the epididymis has caused this condition.

30) Che, an adolescent, notices that his breasts have started swelling abnormally. He visits a physician who advices him to undergo a hormone test. The result shows that the amount of testosterone in Filip's body is less than the amount of estrogen. The medical condition is most likely called ________.

A) "blue balls"

B) cryptorchidism

C) gynecomastia

D) "wet dreams"

31) The thick, clear mucus that may appear at the tip of the erect penis before ejaculation is produced by

A) the Cowper's glands.

B) the prostate gland.

C) the seminal vesicles.

D) Leydig cells.

32) It is believed that the purpose of the secretions of the Cowper's glands is to

A) maintain the erection of the penis until ejaculation.

B) buffer the acidic environment within the urethra.

C) maintain optimal testosterone levels.

D) help lubricate the shaft during masturbation.

33) Oral stimulation of the anus is referred to as

A) fisting.

B) fellatio.

C) cunnilingus.

D) rimming.

34) Gynecomastia refers to the

A) swelling or enlargement of the male breast.

B) incomplete development of the testicles.

C) incomplete development of the penis.

D) the act of masturbation by lesbian women.

35) Within the connective tissues of a man's testes are Leydig cells, which

A) store sperm prior to ejaculation.

B) secrete androgens.

C) produce a cheesy substance called smegma.

D) produce sperm.

36) Leydig cells are also known as

A) principal cells.

B) interstitial cells.

C) pericyte cells.

D) glial cells.

37) Testosterone is made by men primarily in the

A) crura.

B) corona.

C) testes.

D) shaft.

38) A steroid hormone synthesized from cholesterol that triggers the production of sperm is

A) estrogen (eeG).

B) testosterone.

C) human chorionic gonadotropin (hCG).

D) gonadotropin-releasing hormone (GnRH).

39) Testosterone

A) stimulates pituitary during sperm production.

B) promotes touch, affection, and relaxation.

C) increases sperm motility.

D) regulates sex drive.

40) Immature sperm are stored in

A) the vas deferens.

B) Leydig cells.

C) the epididymis.

D) spermatids.

41) Hugh, a 22-year-old, notices that he gets sexually aroused more when he wakes up in the morning than in the evening. Hugh likely has

A) low testosterone production in the early 20s in men.

B) high estrogen level in the morning.

C) high testosterone level in the morning.

D) excessive of physical activity in the morning.

42) What conclusion can be drawn about the impact of testosterone on personality?

A) There exists a negative relation between testosterone and male personality.

B) There is no relationship between testosterone levels and personality.

C) Because of fluctuating testosterone levels throughout the day, no research has been done on this interesting question.

D) Research findings about the impact of testosterone on personality are mixed.

43) ________ is the hormone that triggers the development of secondary sex characteristics in men.

A) Testosterone

B) Estrogen

C) Oxytocin

D) Relaxin

44) Which of the following hormones stimulates sperm production in the testes?

A) luteinizing hormone (LH)

B) follicle-stimulating hormone (FSH)

C) human chorionic gonadotropin (hCG)

D) gonadotropin-releasing hormone (GnRH)

45) ________ is the hormone that increases sperm motility in men?

A) Gonadotropin-releasing hormone (GnRH)

B) Follicle-stimulating hormone (FSH)

C) Oxytocin

D) Relaxin

46) Which of the following hormones stimulates testosterone production in interstitial cells within the testes in men?

A) gonadotropin-releasing hormone (GnRH)

B) follicle-stimulating hormone (FSH)

C) luteinizing hormone (LH)

D) human chorionic gonadotropin (hCG)

47) Which of the following hormones is a protein hormone produced by men?

A) testosterone

B) prolactin

C) inhibin

D) progesterone

48) In men, which hormone triggers pituitary during sperm production?

A) gonadotropin-releasing hormone (GnRH)

B) follicle-stimulating hormone (FHS)

C) oxytocin

D) relaxin

49) The sex of the zygote is determined by the chromosomes found in

A) semen.

B) sperm.

C) ova.

D) dartos.

50) Jerome and Latoya are concerned about the relatively thin stream of semen that runs out of Latoya's vagina after they have intercourse. Latoya assumes that Jerome's semen is not normal. What information or speculation can you offer to Latoya?

A) Liquefied semen indicates that sperm and the secretions from the seminal vesicles are not mixing properly.

B) Although semen tends to be thick immediately after ejaculation, it is normal for semen to become liquefied shortly afterward.

C) The liquid that runs out of her vagina after intercourse is mostly excess vaginal lubrication.

D) The liquid indicates that her vaginal environment is acidic and, therefore, toxic to sperm.

51) Normally, the amount of semen that is ejaculated at one time is about

A) 10 fluid ounces.

B) 3 fluid ounces.

C) 5 liter.

D) 1 teaspoonful.

52) Which of the following female structures is homologous with the corpus spongiosum in males?

A) the glans clitoris

B) the labia minora

C) the hymen

D) the ovary

53) Which of the following male structures is homologous with the labia majora in females?

A) the scrotum

B) the glans penis

C) the corpus spongiosum

D) the penile shaft

54) Which of the following female structures is homologous with the prostate gland in males?

A) the pineal gland

B) the Bartholin's glands

C) the para-urethral glands

D) the Cowper's glands

55) Which expression most accurately describes the male and female sexual responses?

A) They are roughly the same.

B) They are very distinct from each other.

C) They involve different physiological processes.

D) They both exclude psychological factors.

56) About ________ sperm arrive in the fallopian tubes after a single ejaculation during intercourse?

A) 1,000

B) 5,000

C) 50,000

D) 1.5 million

57) Which of the following physical changes occurs in men in the first stage of ejaculation?

A) Blood pressure decreases.

B) Heart rate increases.

C) Respiration becomes normal.

D) Muscles relax.

58) The point at which ejaculation will occur even if stimulation ceases is called

A) orgasm.

B) emission.

C) ejaculatory inevitability.

D) retrograde ejaculation.

59) Which of the following occurs in the expulsion stage of ejaculation in men?

A) The bladder's sphincter muscle closes to prevent urine from mixing with the semen and semen from entering the bladder.

B) There are rapid, rhythmic contractions of the urethra, the prostate, and the muscles at the base of the penis.

C) Men feel a highly distinct sensation of ejaculatory inevitability.

D) A sphincter below the prostate closes to trap semen in the expanded urethral bulb.

60) Franz is diagnosed with retrograde ejaculation. This means that

A) his sperm count is getting low and he may be infertile.

B) he is unable to ejaculate during intercourse.

C) he is unable to ejaculate and experience orgasm at the same time.

D) his semen passes into his bladder rather than out of his urethral opening.

61) Rocco experiences orgasm but does not ejaculate semen during masturbation or sexual intercourse. A physical examination shows that his semen is expulsed into his bladder rather than out of his urethral opening. His physician suggests that this condition might be caused by the tranquilizers that Rocco takes for treating his clinical depression. In this scenario, Rocco is most likely exhibiting the symptoms of

A) cryptorchidism.

B) retrograde ejaculation.

C) gynecomastia.

D) testicular torsion.

62) Orgasm in men

A) occurs at the height of sexual arousal.

B) necessarily requires an erection.

C) is essential for the production of sperm.

D) is responsible for retrograde ejaculation.

63) Orgasm and ejaculation

A) always occur simultaneously.

B) do not always occur simultaneously.

C) seldom occur simultaneously.

D) are the same thing.

64) In the context of the stages in male sexual response, the phase after orgasm during which men are not capable of having an ejaculation again is called

A) retrograde ejaculation.

B) the refractory period.

C) the regenerative period.

D) ejaculatory retardation.

65) Which of the following illustrates a refractory period in men?

A) Sean is unable to have an ejaculation again immediately following ejaculation during intercourse.

B) Owen feels discomfort in his testes because he experiences intense sexual arousal without ejaculation.

C) Austin usually ejaculates before penetrating his partner or soon after penetration.

D) Caden is incapable of ejaculation during sex because he is diabetic.

66) The expression "blue balls" refers to

A) sexually insatiable men.

B) penises wounded during intromission.

C) depression or "blues" that can occur after having rough sexual intercourse.

D) discomfort in the testes from intense sexual arousal without ejaculation.

67) The root of the penis attaches the penis within the pelvic cavity.

68) Smegma is produced by several small glands above the foreskin.

69) The reasons for circumcision seem to be rooted more in tradition and religious beliefs than in any firmly established health principles.

70) Circumcision has little or no medical benefits for men

71) Homosexual men have larger penises than do heterosexual men.

72) The urethra transports both semen and urine and runs from the bladder.

73) Nitric oxide in the penis is involved in attaining an erection.

74) In an unaroused state, the average penis is slightly under 3 inches long.

75) When a man's penis is erect, it always means that he is sexually excited.

76) There is a direct relationship between the size of a man's penis and his ability to have sexual intercourse or satisfy his partner.

77) Men and women must have simultaneous orgasms to cause pregnancy.

78) The vas deferens extends into the abdominal cavity and carries sperm from the testes to the urethra for ejaculation.

79) In puberty, gynecomastia is a normal response to hormonal changes.

80) Male breasts have the same basic structures as female breasts.

81) In men, the anus and rectum provide significant amounts of lubrication during penetrative sexual activity.

82) Testosterone causes the skin to thicken and become oilier, leading to acne in many teenage boys.

83) Testosterone is a steroid hormone synthesized from cholesterol.

84) The production of sperm is known as spermatotheca.

85) Men's testosterone levels appear to be lowest in the evening and highest in the morning.

86) It is the sperm from males that determine the gender of a child.

87) The function of semen is to nourish sperm and provide them with a hospitable environment and means of transport if they are deposited within the vagina.

88) The total volume of semen is primarily occupied by sperm.

89) Ejaculation and orgasm do not necessarily require an erection.

90) Retrograde ejaculation is ejaculation prior to emission.

91) Orgasm does not always occur with ejaculation.

92) Following orgasm, men experience a refractory period, during which they are not capable of having an ejaculation again.

93) "Blue balls" is a serious medical condition that can lead to male sterility.

94) The refractory period for all men ranges between 1 and 2 days.

95) Describe the main functions of the male sex organs.

96) Briefly list and describe the major external male sexual structures.

97) Discuss why circumcision is performed.

98) List the internal structures of the male reproductive system.

99) Briefly discuss 3 or 4 of the common myths about penis size.

100) Compare the male breast with the female breast.

101) What is the evidence that males may undergo mood and behavior fluctuations similar to females?

102) Discuss the physiological process of penile erection including the role of nitric oxide.

103) Trace the journey of the sperm from the epididymis to the vagina.

104) How is the male sexual response both similar to and different from the female sexual response?