Male reproductive system Flashcards
(25 cards)
Location of the scrotum
Hangs outside of the pelvic cavity
What is the function of the scrotum?
Regulate temperature of testes by contraction of the cremaster muscle
Define spermatogenesis
Formation of sperm by meiosis
3 Functions of sustentacular (Sertoli) cells- develop sperm cells
- Supports and provides nutrients while the cell undergoes meiosis
- Produce testicular fluid for transport of sperm
- Control the release of sperm
The function of acrosome?
Help the sperm penetrate the oocyte
The function of the mitochondria
Produce energy for the movement of the sperm
The function of the tail
Propels the sperm
Hormones involved in spermatogenesis
GnRH, LH, FSH
What are the 3 functions of testosterone?
- Controls the growth and development of sex organs
- Stimulates sperm maturation, bone growth, and protein synthesis
- Stimulates development of male secondary sex characteristics in puberty
Location of the epididymis?
Around the posterior surface of the testes
The function of the epididymis?
The site store, mature, and propels sperm.
The function of the ductus (vas) deferens?
The duct that stores and transports sperm from the epididymis to the urethra
What are the 5 structures in the spermatic cord?
- Blood vessels
- Nerves
- Lymphatic nerves
- Ductus
- Cremaster muscle
What is the location of the seminal vesicles?
Pair of structures that lie on the posterior surface of the bladder
What is the function of the seminal vesicles?
Produce many of the parts of semen
What is the location of the ejaculatory duct?
Each side of the prostate gland
What is the function of the ejaculatory gland?
This duct ejects sperm into the urethra just before ejaculation
Location of the prostate gland?
Inferior to the urinary bladder
What is the function of the prostate gland?
Produce/secretes fluid into the urethra during ejaculation
What is the location of the bulbourethral gland?
Inferiorly to the prostate gland at the root of the penis
What is the function of the bulbourethral glands?
Lubricate urethra during sexual excitement
What is the function of the urethra?
Carries urine from the bladder and propels semen to outside the body
What prevents a male to urinate during ejaculation?
The smooth muscle spinster contracts during ejaculation
2 age relates changes in males
- 55 yrs decreased testosterone
2. Hyperplasia can cause frequent urination
