Repro Physl 3 Flashcards
Where are the testes?
In the scrotum
What comprises the internal genitalia of males?
- Ducts for sperm storage and transport
* Prostate gland, bulbourethral gland, seminal vesicles
What is the male external genitalia comprised of?
Penis and scrotum
Where is the prostate gland located?
Below the bladder and encircles the urethra
What is the urethra?
A common passageway for urine and semen
Which part of the shaft of the penis is the urethra?
The ventral aspect
What is the Urethra encircled by?
The corpus spongiosum
What does the corpus spongiosum contribute to?
The erectile tissue and erection
What makes up the erectile tissue?
The corpus spongiosum and the corpora cavernosa
What is the scrotum an extension of?
The abdominal wall
Where are the testes initially located?
In the abdomen during the early part of fetal development
When do the testes descend into the scrotum?
During the 7th month of development
Why do the testes descend into the scrotum?
Rising testosterone
What is Cryptorchidism?
When the testes don’t descend into the scrotum but testosterone production is intact but spermatogenesis is temperature sensitive and sperm may not be produced
When must Cryptorchidism be corrected?
Before puberty, so spermatogenesis can still occur
What helps to cool the testes?
The fact that they’re outside of the body and the countercurrent exchange system
What is the spermatic cord comprised of?
- The blood vessels that either drain or supply the testes
- Nervous input
- Vas deferens
Why is the position of arterial blood supply and venous drainage of the testes important?
Because the warm blood entering the arterial supply will be cooled as it approaches the testes by dissipating into the venous drainage
What structures are located within the testes?
The seminiferous tubules
What makes up the majority of testicular mass?
The seminiferous tubules
Where do the seminiferous tubules converge?
Into the rete testis
What does the rete testis converge into?
The efferent ductules
What do the efferent Ductules coalesce into?
The epididymis
Where does sperm go from the epididymis?
The urethra