Ch.60 Testis Flashcards
Which of the following statements is correct
a. The parietal tunic is intimately adherent to the scrotal skin
b. The external pudendal, a branch of the testicular artery is the vascular supply to the scrotum
c. Innervation of the scrotum is supplied by the Genitofemoral nerve
d. The lymphatic vessels of the scrotum drain to the medial iliac lymph nodes
c. Innervation of the scrotum is supplied by the Genitofemoral nerve
The tunica Dartos is intimately adherent to the scrotal skin
The external pudendal, a branch of the femoral artery is the vascular supply to the scrotum
The lymphatic vessels of the scrotum drain to the superficial inguinal lymph nodes
Which of the following statements is correct?
a. The testis is covered by the parietal tunic
b. Spermatozoa are produced by the sertoli cells
c. Sertoli cells supply mechanical and nutritive support for the developing spermatozoa
d. FSH produced by the adrenal gland stimulates spermatogenesis
c. Sertoli cells supply mechanical and nutritive support for the developing spermatozoa
The testis is covered by the tunica albuginea
Spermatozoa are produced by the spermatogonia
FSH produced by the hypophysis stimulates spermatogenesis
Which of the following statements is correct?
a. The seminiferous tubules make up 20% of the parenchyma of the testis
b. The sertoli cells located between the seminiferous tubules and the interstitial cells produce androgens
c. The testis of the stallion produce an unusually low concentration of estrogen in comparison to other domestic species.
d. The leydig cells are the source of estrogen in the stallion
d. The leydig cells are the source of estrogen in the stallion
The seminiferous tubules make up over 70% of the parenchyma of the testis
The cells of Leydig, located between the seminiferous tubules and the interstitial cells produce androgens
The testis of the stallion produce an unusually high concentration of estrogen in comparison to other domestic species.
Which of the following statements is correct?
a. Seminiferous tubules converge to form the tubules of the rete testis
b. The dozen or more efferent ductules unite in the head of the epididymis to form a single coiled tube, over 70 m long
c. Spermatozoa mature in the epididymal duct
d. all of the above
d. all of the above
Which structures pass through the inguinal canal?
a. spermatic cord, genitofemoral nerve, external pudendal vasculature, efferent lymphatic vessels from the superficial inguinal lymph nodes
b. spermatic cord, pudendal nerve, internal pudendal vasculature, efferent lymphatic vessels from the superficial inguinal lymph nodes
c. spermatic cord, pudendal nerve, internal pudendal vasculature, efferent lymphatic vessels from the medial iliac lymph nodes
d. none of the above
a. spermatic cord, genitofemoral nerve, external pudendal vasculature, efferent lymphatic vessels from the superficial inguinal lymph nodes
Which is not a border of the deep inguinal ring?
a. internal abdominal oblique muscle
b. rectus abdominis muscle
c. inguinal ligament
d. external abdominal oblique
d. external abdominal oblique
cranially by the caudal edge of the internal abdominal oblique muscle
ventromedially by the rectus abdominis muscle and prepubic tendon
caudally by the inguinal ligament
Which of the following statements is correct?
a. Deep inguinal ring - directed craniolaterally
b. Superficial inguinal ring - directed dorsolaterally
c. The wall of the inguinal canal is lined by peritoneum, which forms the tunica vaginalis
d. All of the above
c. The wall of the inguinal canal is lined by peritoneum, which forms the tunica vaginalis
Superficial inguinal ring - directed craniolaterally
Deep inguinal ring - directed dorsolaterally
Which of the following statements is true?
a. The Parietal tunic is continuous with the parietal peritoneum of the abdomen at the deep inguinal ring and forms a sac that lines the scrotal cavity
b. The Visceral tunic adheres firmly to the tunica albuginea and covers the testis and associated ducts
c. The vaginal process is formed from the internal spermatic fascia and the parietal tunic
d. All of the above
d. all of the above
Which of the following statements is correct?
a. Vaginal cavity is a diverticulum of the peritoneal cavity between the parietal and visceral tunics
b. The tunica vaginalis is made up of the parietal and visceral tunics
c. The right and left vaginal cavities communicate
d. All of the above
b. The tunica vaginalis is made up of the parietal and visceral tunics
Vaginal cavity is a diverticulum of the peritoneal cavity between the parietal and visceral tunics
The right and left vaginal cavities do not communicate
Which of the following statements is correct?
a. The cranial part of the gubernaculum testis of the fetus becomes the proper ligament of the testis
b. The caudal part of the gubernaculum testis of the fetus becomes the proper ligament of the testis
c. The proper ligament of the testis connects the tail of the epididymis to the parietal tunic
d. none of the above
a. The cranial part of the gubernaculum testis of the fetus becomes the proper ligament of the testis
the ligament of the tail of the epididymis connects the tail of the epididymis to the parietal tunic
the proper ligament connects the epididymis to the testis
Which of the following statements is correct?
a. The scrotal ligament of an abdominally retained testis is sometimes referred to as the inguinal extension of the gubernaculum testis
b. The proper ligament of an abdominally retained testis is sometimes referred to as the inguinal extension of the gubernaculum testis.
c. The ligament of the tail of the epididymis in an abdominally retained testis is sometimes referred to as the inguinal extension of the gubernaculum testis.
d. None of the above
a. The scrotal ligament of an abdominally retained testis is sometimes referred to as the inguinal extension of the gubernaculum testis
Which fo the following statements is correct?
a. At 5 months of gestation Gonads differentiate into testes or ovaries
b. At 60 days of gestation, Gonads differentiate into testes or ovaries
c. At 55 days the testis is suspended cranially by the cephalic (suspensory) ligament and dorsally by the mesorchium
d. At 55 days, the testis is nearly as large as that of a mature testis
c. At 55 days the testis is suspended cranially by the cephalic (suspensory) ligament and dorsally by the mesorchium
At 40 days of gestation gonads differentiate into testes or ovaries
5 months of gestation, the testis is nearly as large as that of a mature testis
Which of the following statements is correct?
a. At 5 months of gestation, the cephalic ligament atrophies and the testis descends into the vaginal process
b. During the last month of gestation, the testis are the size of mature testis
c. At the vaginal ring, the ductus deferens separates from the other constituents of the spermatic cord and turns caudomedially into the pelvic cavity, where it lies in the genital fold
d. The ductus deferens is supplied by the external pudendal artery, a branch of the femoral artery.
c. At the vaginal ring, the ductus deferens separates from the other constituents of the spermatic cord and turns caudomedially into the pelvic cavity, where it lies in the genital fold
At 5 months of gestation, the cephalic ligament atrophies, epididymis descends into the vaginal process while the testis remains in the abdomen
by the last month of gestation, the testis becomes one-tenth of its former size
Epididymis and subperitoneal gubernaculum expand in diameter, dilating the vaginal ring and inguinal canal.
an increase in intraabdominal pressure, allows the testis to pass into the inguinal canal at between 270 and 300 days of gestation
The ductus deferens is supplied by the deferential artery, a branch of the umbilical artery.
Which of the following are correct?
a. The testicular artery and its branch, the epididymal artery, constitute most of the vascular supply to the testis.
b. The cremasteric artery and the deferential artery contribute to the blood supply to the testis.
c. The pampiniform plexus lies around the coiled testicular artery and forms the bulk of the spermatic cord
d. All of the above
d. all of the above
Which of the following statements is correct?
a. The left testicular vein usually joins the caudal vena cava
b. The right testicular vein usually joins the left renal vein
c. The lymphatic vessels of the testis and epididymis ascend directly to the medial iliac and lumbar lymph nodes
d. The cremaster muscle = a slip of the external abdominal oblique
c. The lymphatic vessels of the testis and epididymis ascend directly to the medial iliac and lumbar lymph nodes
The right testicular vein usually joins the caudal vena cava
left testicular vein usually joins the left renal vein
cremaster muscle = a slip of the internal abdominal oblique
Layers of the testicle - tunica/fascia etc
Tunica dartos
External spermatic fascia
Internal spermatic fascia
Parietal vaginal tunic
Vaginal cavity
Visceral vaginal tunica
Tunica Albuginea
