Male Reproductive System Flashcards
the study of the male reproductive organ
Andrology
Male external structures
- Scrotum
- Testes
- Penis
a rugated, skin-covered, muscular pouch suspended the perineum
Scrotum
Its functions are to support the testes and help regulate the temperature of sperm.
Scrotum
two ovoid glands, 2-3 cm wide that rest in the scrotum
Testes
where spermatozoa is produced
Testes
It is responsible for the release of androgen-binding protein (ABP).
Follicle-Stimulating Hormone (FSH)
It is responsible for the release of testosterone from the testes.
Luteinizing Hormone (LH)
It is composed of three cylindrical masses of erectile tissue in the penis shaft.
Penis
Parts of the penis
Base, shaft, glans, & foreskin
retractable casing of skin that protects the nerve-sensitive glans at birth
Prepuce
removed surgically- circumcision
Prepuce
a highly convoluted duct behind the testes, along which sperm passes to the vas deferens
Epididymis
complete absence of seminal fluid emission
Aspermia
fewer than 20 million sperm per milliliter
Oligospermia
Internal Structures of Male Reproductive System
- Epididymis
- Vas deferens (ductus deferens)
- Seminal vesicles
- Prostate gland
- Bulbourethral glands (Cowper’s gland)
- Urethra
hollow tube surrounded by arteries and veins and protected by a thick fibrous coating
Vas deferens
It carries sperm from the epididymis through the inguinal canal into the abdominal cavity, where it ends at the seminal vesicles and the ejaculatory ducts below the bladder.
Vas deferens
two convoluted pouches that lie along the lower portion of the bladder and empty into the urethra by ejaculatory ducts
Seminal vesicles
These glands secrete a viscous alkaline liquid with a high sugar, protein and prostaglandin content. Sperm become increasingly motile because of this added fluid.
Seminal vesicles
is a chest nut-sized gland that lies just below the bladder and allows the urethra to pass through the center of it
Prostate gland
Its purpose is to secrete a thin, alkaline fluid, which, when added to the secretion from the seminal vesicles, further protects sperm by increasing the naturally low pH level of the urethra.
Prostate gland
lie beside the prostate gland and empty by short ducts into the urethra
Bulbourethral glands (Cowper’s gland)
supply one more source of alkaline fluid to help ensure the safe passage of spermatozoa
Bulbourethral glands (Cowper’s gland)
It is a hollow tube leading from the base of the bladder, which after passing through the prostate gland, continues to the outside through the shaft and glans of the penis.
Urethra
It is about 8 in (18-20 cm) long & it is line with with mucous membrane.
Urethra
