12 Questions
What is the function of the epididymis?
It stores sperm
Where are sperm produced?
Seminiferous tubules
What is the function of the ductus deferens?
To transport sperm to the urethra
How do sperm gain the ability to move and fertilize?
By passing through the epididymis
What is the concentration of sperm in the epididymis compared to the seminiferous tubules?
100-fold
How long can sperm be stored in the ductus deferens?
2 months
What is the source of nourishment for sperm in the ductus deferens?
Simple sugars in tubular secretions
What is capacitation?
The enhancement of sperm's capacity
Where is the epididymis located in relation to the testis?
Behind the testis
What is the function of the epididymal ducts?
To transport sperm to the urethra
Where does the ductus deferens eventually empty into?
The urethra
What is the function of the epididymis and ductus deferens?
To store sperm
Study Notes
- The epididymis is attached to the rear surface of each testis.
- Sperm are swept into the epididymis after production in the seminiferous tubules.
- The epididymal ducts converge to form the ductus deferens.
- The ductus deferens passes out of the scrotal sac and into the abdominal cavity, eventually emptying into the urethra.
- The epididymis and ductus deferens serve as the exit route for sperm from the testis.
- Sperm gain the ability to move and fertilize during their passage through the epididymis.
- The epididymis concentrates sperm 100-fold by absorbing most of the fluid that enters from the seminiferous tubules.
- The ductus deferens is an important site for sperm storage for up to 2 months.
- Sperm in the ductus deferens have no nutrient blood supply and are nourished only by simple sugars present in the tubular secretions.
- Capacitation is the enhancement of sperm's capacity in the male and female reproductive tracts.
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