Scrotum and Spermatic Cord Flashcards
During embryonic development where do the testes arise from? And how do they get to the scrotum?
The region of the kidneys, and descend to protrude through the inferior portion of the anterior abdominal wall.
Name in order from the outer layer to innermost layer of the scrotal sac.
Skin, Dartos fascia, Dartos muscle, External spermatic fascia, Cremasteric muscle, Internal spermatic fascia, Tunica vaginalis, Tunica albuginea, and Seminiferous.
A continuation of Scarpa’s fascia. Consists of a thin layer of loose connective tissue with some smooth muscle.
Dartos Fascia.
The smooth muscle contracts and thus wrinkles the skin of the scrotum, enhancing the radiation of the heat when the temperature of the testes increases excessively.
Dartos muscle.
Continuation of the external oblique aponeurosis.
External spermatic fascia.
Continuation of the internal oblique muscle. If the temperature of the testes drops, contraction of this muscle moves the testes closer to the body wall, thus helping maintain appropriate temperature.
Cremasteric muscle.
Continuation of the transversalis fascia.
Internal spermatic fascia.
A serous membrane pouch that covers the testes. The testes develop in the retroperitoneal space and as they descend to form the scrotum some peritoneum is pulled into the developing scrotal sac and surrounds the testes.
Tunica vaginalis.
The dense white connective tissue capsule of the testes.
Tunica albuginea.
Microscopic tubules that form the inferior of the testes; site for production, maturation, and transportation of spermatozoa.
Seminiferous tubules.
Has the same muscular and fascia layers as the anterior abdominal wall, similar to the scrotal sac.
Spermatic Cord.
Transports sperm from the testes, through the spermatic cord and inguinal canal to the ejaculatory duct in the prostate.
Ductus deferens.
The paired gonadal artery are bilaterally symmetrical. Each gonadal artery originates on the abdominal aorta, inferior to the renal arteries. Each artery traverses the deep inguinal ring and courses through the inguinal canal to provide the vascular supply to the testes and ductus deferens on the corresponding side of the body.
Testicular artery.
The paired gonadal veins are bilaterally symmetrical. Each vein drains blood from the testis and courses from the scrotal sac, through the spermatic cord, and traverses the superficial inguinal ring through the inguinal canal before entering the abdominal cavity.
Testicular vein.
Where does the right testicular vein drain into?
Inferior Vena Cava.
