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Male GU

Terms in this set (45)

E.
The gonads:
A. are the male testes and female ovaries.
B. secrete sex hormones.
C. produce gametes.
D. are dormant until puberty.
E. All choices are correct.
B.
The male homologue to the labia majora is the:
A. testis.
B. scrotum.
C. penis.
D. bulbourethral gland.
E. prostate gland.
D.
Puberty is initiated when a region of the brain begins secreting:
A. luteinizing hormone.
B. estrogen or testosterone.
C. follicle-stimulating hormone.
D. gonadotropin-releasing hormone.
E. androgens.
C.
The primary target cells for GnRH are located in the:
A. hypothalamus.
B. gonads.
C. anterior pituitary gland.
D. adrenal gland.
E. genitals.
D.
The perineum consists of an anterior:
A. ischial tuberosity and a posterior anal ellipse.
B. urethral orifice and a posterior pubic crest.
C. false pelvis and a posterior true pelvis.
D. urogenital triangle and a posterior anal triangle.
E. pubic quadralateral and a posterior anal rhombus.
B.
The anterior border to the perineum is the:
A. anus.
B. pubic symphysis.
C. ischial tuberosity.
D. bulbospongiosus muscle.
D.
Human somatic cells contain only one pair of:
A. chromosomes.
B. autosomes.
C. homologous chromosomes.
D. sex chromosomes.
C
A cell that contains 23 pairs of chromosomes is:
A. polyploid.
B. diploid.
C. haploid.
D. monoid.
B.
Inhibin is secreted by:
A. uterine lining cells, and it inhibits development of ovarian follicles.
B. follicular cells, and it inhibits FSH production.
C. the anterior pituitary, and it inhibits GnRH production.
D. the posterior pituitary, and it inhibits ovulation.
E. hypothalamic cells, and it inhibits LH production.
C.
The function of the dartos and cremaster muscles is to:
A. attach the penis to the body wall.
B. produce erections.
C. regulate the temperature of the testes.
D. help the testes descend into the scrotum prior to birth.
E. move sperm along the ductus deferens.
B.
The ridge that is visible externally along the midline of the scrotum is called the:
A. septum.
B. raphe.
C. perineum.
D. tunica albuginea.
E. scrotal cord.
D.
Which of the following is a thin layer of smooth muscle just beneath the skin of the scrotum?
A. Raphe
B. Cremaster
C. Tunica vaginalis
D. Dartos muscle
E. Inguinal muscle
A.
Which structure is derived from the peritoneum of the abdominal cavity?
A. Tunica vaginalis
B. Perineal raphe
C. Spermatic cord
D. Tunica albuginea
E. Mediastinum testis
B.
Sperm are produced in the:
A. rete testis.
B. seminiferous tubules.
C. epididymis.
D. seminal vesicles.
E. efferent ductules.
C.
The interstitial cells in the testes:
A. undergo mitosis to produce primary spermatocytes.
B. support and protect the developing sperm cells.
C. secrete testosterone.
D. convert fructose to glucose to nourish the sperm.
E. form the lining of the seminiferous tubules.
D.
Developing sperm cells are protected by a blood-testis barrier formed by:
A. connective tissue septa.
B. interstitial spaces.
C. Leydig cells.
D. sustentacular cells.
E. leukocytes.
D.
Which is not true about spermatogenesis?
A. The process includes two meiotic divisions.
B. The final stage of the process is called spermiogenesis.
C. Mature spermatozoa are haploid (n=23).
D. Spermatogenesis begins at birth and continues throughout a man's life.
E. The process takes place in the walls of the seminiferous tubules.
B.
What part of a spermatozoon contains the nuclear material?
A. Acrosome cap
B. Head
C. Midpiece
D. Flagellum
E. Tail
C.
The stages that appear during spermatogenesis are:
a: spermatid
b: primary spermatocyte
c: spermatogonium
d: spermatozoon
e: secondary spermatocyte
What is the correct order of appearance of these stages?
A. b, e, c, d, a
B. c, e, d, a, b
C. c, b, e, a, d
D. a, c, b, e, d
E. d, b, c, e, a
C.
The acrosome cap contains:
A. testosterone.
B. nutrients to sustain the sperm.
C. enzymes to allow penetration into the oocyte.
D. mitochondria to provide energy for movement.
E. buffers to neutralize the acidity of the female reproductive tract.
D.
How many spermatozoa ultimately develop from each primary spermatocyte?
A. 1
B. 2
C. 3
D. 4
E. 5
B.
In men, LH stimulates:
A. hypothalamic cells to secrete GnRH.
B. interstitial cells to secrete testosterone.
C. anterior pituitary cells to secrete FSH.
D. sustentacular cells to secrete testosterone.
E. spermatogenic cells to secrete ABP.
B.
When comparing gamete production in males and females, males produce:
A. more gametes that are larger in size.
B. more gametes that are smaller in size.
C. fewer gametes that are larger in size.
D. fewer gametes that are smaller in size.
A.
Where are spermatozoa stored until they are fully mature?
A. Epididymis
B. Rete testis
C. Ductus deferens
D. Seminiferous tubules
E. Efferent ductules
E.
Which structure is not found in both males and females?
A. Glans
B. Corpora cavernosa
C. Tunica albuginea
D. Prepuce
E. Vestibular gland
A.
The rete testis:
A. receives sperm from the seminiferous tubules.
B. is the nerve plexus that supplies the testis.
C. is a venous network that cools the arterial blood traveling to the testis.
D. transports seminal fluid to the efferent ductules.
E. is the site of spermiogenesis.
B.
The structures of the male reproductive tract are:
a: ductus deferens
b: urethra
c: epididymis
d: ejaculatory duct
e: ampulla
What is the order in which sperm passes through these structures from the testes to the penis?
A. a, b, c, e, d
B. c, a, e, d, b
C. a, c, e, b, d
D. c, a, b, d, e
E. d, a, c, e, b
A.
The ejaculatory duct is formed by the:
A. ampulla and the proximal portion of the seminal vesicle.
B. ductus deferens and the ducts of the prostate gland.
C. ampulla and the distal portions of the bulbourethral glands.
D. ductus deferens and the ducts of the prostate gland and bulbourethral glands.
E. ampulla and the prostatic urethra.
C.
Which of the male accessory glands encircles the urethra?
A. Seminal vesicle
B. Bulbourethral gland
C. Prostate gland
D. Cowper's gland
E. Urethral gland
A.
Which gland secretes a fluid containing fructose?
A. Seminal vesicle
B. Bulbourethral gland
C. Vestibular gland
D. Prostate gland
E. Urethral gland
E.
Which of the following is not a component of seminal fluid?
A. Prostaglandin
B. Citric acid
C. Mucous
D. Seminalplasmin
E. Calcium
C.
Which of these male reproductive structures is unpaired (meaning there is only one in the body)?
A. Epididymis
B. Bulbourethral gland
C. Prostate gland
D. Seminal vesicle
E. Corpus cavernosum
C.
These tubuloalveolar glands produce a clear, viscous mucin that serves as a lubricant during sexual intercourse.
A. Seminal vesicles
B. Prostate glands
C. Bulbourethral glands
D. Areolar glands
A.
Which statement is accurate?
A. Semen is composed of seminal fluid and sperm.
B. Seminal fluid is composed of semen and sperm.
C. Sperm are composed of seminal fluid within a cell membrane.
D. The three ingredients of ejaculate are sperm, semen, and prostate-specific antigen.
C.
The external urethral orifice is found at the _________ of the penis.
A. bulb
B. crus
C. glans
D. corpus cavernosum
E. body
D.
An erection of the penis is caused by:
A. semen pressure from the testes and ductus deferens.
B. muscle flexion of the penile muscles.
C. increased secretions of lymph into the spongy tissue.
D. blood filling the erectile bodies and compressing the veins.
E. ejaculatory muscles.
C.
The ___________ nervous system facilitates increased blood flow to the penis by facilitating local release of __________.
A. sympathetic, nitric oxide
B. sympathetic, norepinephrine
C. parasympathetic, nitric oxide
D. parasympathetic, norepinephrine
E. somatic, acetylcholine
B.
During orgasm, the ductus deferens undergoes:
A. peristalsis, and the internal urethral sphincter of the bladder relaxes.
B. peristalsis, and the internal urethral sphincter of the bladder contracts.
C. segmentation, and the external urethral sphincter contracts.
D. segmentation, and the external urethral sphincter becomes engorged with blood.
C.
In males, the _________ region on the Y chromosome initiates male phenotypic development.
A. HRT
B. AMH
C. TDF
D. PSA
E. BPH
B.
The expression of the ________ gene results in the production of proteins that stimulate synthesis of androgens that initiate development af a male phenotype.
A. MDF
B. SRY
C. GRH
D. YXP
C.
The appearance of the external genitalia determine an individual's:
A. gender identity.
B. genetic sex.
C. phenotypic sex.
D. genotypic sex.
E.
Which is not considered to be a change associated with aging in males?
A. Erectile dysfunction
B. Impotence
C. Decreased testosterone levels
D. Prostate enlargement
E. Termination of spermatogenesis
A.
In males, the labioscrotal swellings form the:
A. scrotum.
B. scrotum and testes.
C. scrotum and root of the penis.
D. scrotum and dorsal side of the penis.
E. scrotum and ventral side of the penis.
C.
Anti-Mullerian hormone is sectreted by:
A. ovarian follicular cells.
B. primary spermatocytes.
C. sustentacular cells.
D. interstitial cells.
E. paramesonephric cells.
C.
The external genitalia do not become clearly differentiated until about week ____ of development.
A. 6
B. 12
C. 20
D. 32
E. 38
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