Biology Quiz: The Anatomy Of The Perineum
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How much do you understand the anatomy of the Perineum? The perineum is the space between the anus and scrotum in the male and between the anus and the vulva in the female. It plays a vital role in the body functions as such micturition, defecation, sexual intercourse, and childbirth. If you are looking to learn some more about this region, be sure to take this interesting quiz. All the best!
- 1.A 68-year-old woman with uterine carcinoma undergoes surgical resection. This cancer can spread directly to the labia majora in lymphatics that follow which of the following structures?
- A.
Pubic arcuate ligament
- B.
Suspensory ligament of the ovary
- C.
Cardinal (transverse cervical) ligament
- D.
Suspensory ligament of the clitoris
- E.
Round ligament of the uterus
- 2.A 17-year-old boy suffers a traumatic groin injury during a soccer match. The urologist notices tenderness and swelling of the boy's left testicle that may be produced by thrombosis in which of the following veins?
- A.
Left internal pudendal vein
- B.
Left renal vein
- C.
Inferior vena cava
- D.
Left inferior epigastric vein
- E.
Left external pudendal vein
- 3.On a busy Saturday night in Chicago, a 16- year-old boy presents to the emergency room with a stab wound from a knife that enters the pelvis above the piriformis muscle. Which of the following structures is most likely to be damaged?
- A.
Sciatic nerve
- B.
Internal pudendal artery
- C.
Superior gluteal nerve
- D.
Inferior gluteal artery
- E.
Posterior femoral cutaneous nerve
- 4.A 22-year-old woman receives a deep cut in the inguinal canal 1 inch lateral to the pubic tubercle. Which of the following ligaments is lacerated within the inguinal canal?
- A.
Suspensory ligament of the ovary
- B.
Ovarian ligament
- C.
Mesosalpinx
- D.
Round ligament of the uterus
- E.
Rectouterine ligament
- 5.A 29-year-old carpenter sustains severe injuries of the pelvic splanchnic nerve by a deep puncture wound, which has become contaminated. The injured parasympathetic preganglionic fibers in the splanchnic nerve are most likely to synapse in which of the following ganglia?
- A.
Ganglia in or near the viscera or pelvic plexus
- B.
Sympathetic chain ganglia
- C.
Collateral ganglia
- D.
Dorsal root ganglia
- E.
Ganglion impar
- 6.A 59-year-old woman comes to a local hospital for uterine cancer surgery. As the uterine artery passes from the internal iliac artery to the uterus, it crosses superior to which of the following structures that are sometimes mistakenly ligated during such surgery?
- A.
Ovarian artery
- B.
Ovarian ligament
- C.
Uterine tube
- D.
Ureter
- E.
Round ligament of the uterus
- 7.A 29-year-old woman is admitted to a hospital because the birth of her child is several days overdue. Tearing of the pelvic diaphragm during childbirth leads to paralysis of which of the following muscles?
- A.
Piriformis
- B.
Sphincter urethrae
- C.
Obturator internus
- D.
Levator ani
- E.
Sphincter ani externus
- 8.A 37-year-old small business manager receives a gunshot wound in the pelvic cavity, resulting in a lesion of the sacral splanchnic nerves. Which of the following nerve fibers would primarily be damaged?
- A.
Postganglionic parasympathetic fibers
- B.
Postganglionic sympathetic fibers
- C.
Preganglionic sympathetic fibers
- D.
Preganglionic parasympathetic fibers
- E.
Postganglionic sympathetic and parasympathetic fibers
- 9.A young couple is having difficulty conceiving a child. Their physician at a reproduction and fertility clinic explains to them that:
- A.
The ovary lies within the broad ligament
- B.
The glans clitoris is formed from the corpus spongiosum
- C.
Erection of the penis is a sympathetic response
- D.
Ejaculation follows parasympathetic stimulation
- E.
Fertilization occurs in the infundibulum or ampulla of the uterine tube.
- 10.A 46-year-old woman has a history of infection in her perineal region. A comprehensive examination reveals a tear of the superior boundary of the superficial perineal space. Which of the following structures would most likely be injured?
- A.
Pelvic diaphragm
- B.
Colles' fascia
- C.
Superficial perineal fascia
- D.
Deep perineal fascia
- E.
Perineal membrane
- 11.A 58-year-old man is diagnosed as having a slowly growing tumor in the deep perineal space. Which of the following structures would most likely be injured?
- A.
Bulbourethral glands
- B.
Crus of penis
- C.
Bulb of vestibule
- D.
Spongy urethra
- E.
Great vestibular gland
- 12.An elderly man with benign enlargement of his prostate experiences difficulty in urination, urinary frequency, and urgency. Which of the following lobes of the prostate gland is commonly involved in benign hypertrophy that obstructs the prostatic urethra?
- A.
Anterior lobe
- B.
Middle lobe
- C.
Right lateral lobe
- D.
Left lateral lobe
- E.
Posterior lobe
- 13.A 59-year-old man is diagnosed with prostate cancer following a digital rectal examination. For the resection of prostate cancer, it is important to know that the prostatic ducts open into or on which of the following structures?
- A.
Membranous part of the urethra
- B.
Seminal colliculus
- C.
Spongy urethra
- D.
Prostatic sinus
- E.
Prostatic utricle
- 14.A 29-year-old woman with a ruptured ectopic pregnancy is admitted to a hospital for culdocentesis. A long needle on the syringe is most efficiently inserted through which of the following structures?
- A.
Anterior fornix of the vagina
- B.
Posterior fornix of the vagina
- C.
Anterior wall of the rectum
- D.
Posterior wall of the uterine body
- E.
Posterior wall of the bladder
- 15.A 37-year-old man is suffering from carcinoma of the skin of the glans penis. Cancer cells are likely to metastasize directly to which of the following lymph nodes?
- A.
External iliac nodes
- B.
Internal iliac nodes
- C.
Superficial inguinal nodes
- D.
Aortic (lumbar) nodes
- E.
Common iliac nodes
- 16.A 42-year-old woman who has had six children develops weakness of the urogenital diaphragm. Paralysis of which of the following muscles would cause such a symptom?
- A.
Sphincter urethrae
- B.
Coccygeus
- C.
Superficial transversus perinei
- D.
Levator ani
- E.
Obturator internus
- 17.A 43-year-old man has a benign tumor located near a gap between the arcuate pubic ligament and the transverse perineal ligament. Which of the following structures is most likely compressed by this tumor?
- A.
Perineal nerve
- B.
Deep dorsal vein of the penis
- C.
Superficial dorsal vein
- D.
Posterior scrotal nerve
- E.
Deep artery of the penis
- 18.An obstetrician performs a median episiotomy on a woman before parturition to prevent uncontrolled tearing. If the perineal body is damaged, the function of which of the following muscles might be impaired?
- A.
Ischiocavernosus and sphincter urethrae
- B.
Deep transverse perineal and obturator internus
- C.
Bulbospongiosus and superficial transverse perineal
- D.
External anal sphincter and sphincter urethrae
- E.
Bulbospongiosus and ischiocavernosus
- 19.A 22-year-old man has a gonorrheal infection that has infiltrated the space between the inferior fascia of the urogenital diaphragm and the superficial perineal fascia. Which of the following structures might be inflamed?
- A.
Greater vestibular gland
- B.
Bulbourethral gland
- C.
Membranous part of the male urethra
- D.
Deep transverse perineal muscle
- E.
Sphincter urethrae
- 20.A 39-year-old man is unable to expel the last drops of urine from the urethra at the end of micturition because of paralysis of the external urethral sphincter and bulbospongiosus muscles. This condition may occur as a result of injury to which of the following nervous structures?
- A.
Pelvic plexus
- B.
Prostatic plexus
- C.
Pudendal nerve
- D.
Pelvic splanchnic nerve
- E.
Sacral splanchnic nerve
Questions: 25 | Attempts: 4822 | Last updated: Mar 22, 2022
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