18 Questions
What is the function of the interstitial cells of Leydig in the testes?
to secrete the hormone testosterone after puberty
How many lobules are present in each testis?
200 to 300
What is the name of the tubule that forms from the combination of tubules at the upper pole of the testis?
epididymis
What is the approximate length of a testis?
4.5cm
What are the three layers of tissue that surround the testis?
Tunica vaginalis, Tunica albuginea, and Tunica vasculosa
What is the name of the duct that transports sperm away from the testis?
ductus deferens
Where is the deferent duct located and what is its function?
The deferent duct is located in the spermatic cord and its function is to transport spermatozoa.
What is the role of FSH in sperm production?
FSH (Follicle-Stimulating Hormone) from the anterior pituitary controls sperm production.
Describe the structure of a mature sperm.
A mature sperm has a head filled with a nucleus, a body packed with mitochondria, and a whip-like tail.
Why is a lower temperature necessary for spermatogenesis?
Spermatogenesis requires a temperature about 3°C below normal body temperature.
Describe the arterial supply to the testis.
The testicular artery branches from the abdominal aorta, just below the renal artery.
What is the venous drainage pathway of the testis?
The testicular vein passes into the abdominal cavity, with the left vein opening into the left renal vein and the right vein draining directly into the inferior vena cava.
Where is the ductus deferens located in relation to the spermatic cord?
The ductus deferens lies vertically in the posterior part of the spermatic cord.
What is the function of the seminal vesicles during ejaculation?
The seminal vesicles contract and expel their stored contents, seminal fluid, during ejaculation.
What are the three layers that make up the prostate gland?
The three layers are: 1) an outer fibrous layer, 2) a layer of smooth muscle, and 3) glandular substance composed of columnar epithelium.
What percentage of semen is made up of the fluid secreted by the prostate gland?
The prostate gland secretes a fluid that makes up about 30% of the semen.
Where do the ducts of the seminal vesicles and the deferent ducts unite?
The ducts of the seminal vesicles and the deferent ducts unite to form an ejaculatory duct.
What is the location of the prostate gland in the pelvic cavity?
The prostate gland lies in front of the rectum and behind the symphysis pubis.
This quiz covers the male reproductive organs and their associated structures, including the external and internal genitalia. It will test your knowledge of the testis, epididymis, ductus deferens, seminal vesicle, ejaculatory ducts, prostate glands, and male urethra.
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