The Male Reproductive System Flashcards
To learn the structure and functions of the male reproductive system.
Where is the male reproductive system located?
Pelvis region
What does the male reproductive system include?
A pair of teses, accessory ducts, glands and the external genitalia.
Where are the testes located in the male reproductive system?
Outside the abdomical cavity within a pouch called the scrotum.
What is the function of the scrotum in relation to the testes?
It helps in maintaining a low temperature of the testes. approximately 2-2.5C lower than the nomal internal body temperature, necessary for spermatogenesis.
Describe the shape and dimensions of each adult testis.
Each adult testis is oval in shape, with a length f about 4 to 5 cm and a width of about 2 to 3 cm.
What covers each testis, and how many compartments does it have?
Each testis is covered by a dense covering and haas about 250 compartments called testicular lobules.
What structures are found within each testicular lobule, and what is their function?
Each testicular lobule contains one to three highly coiled seminiferous tubules in whcih sperms are produced. These tubules are lined with male germ cells (spermatogonia) and Sertoli cells provide nutirion to the germ cell.
What is the region outside seminiferous tubule called?
Interstitial spaces
What is the function of Leydig cells, and where are they located?
Leydig cells, located in he interstitial spaces outside the seminiferous tubules, synthesize and secrete testicular hormones called androgens.
Name the male sex accessory ducts and describe their pathway.
The male sex accessory ducts include the rete testis, vasa efferentia, epididymis, vas deferens, and ejaculatory duct. The seminiferous tubules of the testis open into the vasa efferentia through the rete testis. The vasa efferentia leave the testis and open into the epididymis, which leads to the vas deferens. The vas deferens ascends to the abdomen, loops over the urinary bladder, and eventually opens into the urethra as the ejaculatory duct.
What is the function of the utethra in the male reproductive system?
The urethra originates from the urinary bladder and extends through the penis to its external opening called the urethral meatus. It serves as a passage for both urine and semen.
What is the composition of seminal plasma, and which glands produce it?
Seminal plasma is rich in fructose, calcium, and certain enzymes. It is produced by the paired seminal vesicles, the prostate, and the paired bulbourethral glands.
What is the function of the bulbourethral glands in the male reproductive system?
The secretions of the bulbourethral glands help in the lubrication of the penis.
What is penis, and what is its role in the male reproductive system?
The penis is the male external genitalia, and its role is to facilitate insemination by delivering sperm into the female reproductive tract during secual intercourse.
Describe the composition of the penis.
The penis is made up of special tissue that aids in its erection, allowing for penetration during sexual intercourse.
