Unit B - Reproduction (Male system) Flashcards
What is the difference between primary and secondary sec characteristics?
Primary - at birth
Secondary - at puperty
What are the three main functions of the of the male reproduction system?
- Produce male gamete
- Produce male sex hormones
- Deliver gamete
What makes a male, male?
The SRY gene
Upregulates genes for development of male reporductive system
Suppresses the female sex-determining pathway
do not need to know the upregulates and suppresses part in great detail.
What are the functions of the testes?
- produce sperm (spermatogenisis)
- produce male sex hormones
What is the function of the Seminiferous Tubules?
what cell helps its function?
- Produce sperm cells
- Have sertoli cells that nourish developing sperm
What are the three stages of sperm cells?
Spermatogonium → Spermatocytes → Sperm cells
What are the two functions of sertoli cells?
Nourish developing sperm cells and produce Inhibin
Where are interstitial cells found?
Outside/between seminiferous tubules.
What are interstitial cells stimulated by __ to produce __
LH to produce testosterone.
Why are the scrotum and the testies lower than the rest of the body?
In order for sperm to properly develop (need lower temperature)
What is the function of the scrotum?
To hold the testies
What are signs that a male is infertile?
- the testies haven’t fallen yet
What is the function of the Vas Deferens?
Carry sperm from the testes to the urethra.
What is the function of the Ejaculatory Duct?
Regulates the movement of sperm and fluids (semenal fluid)
What is the function of the sphincter?
Ensures that EITHER semenal fluid or urine goes through the urethra