Physiology of Male Reproduction Flashcards
What comprises the male reproductive system?
What is the function of the male reproductive system?
Testis
Ductus deferens
Penis
Produce store and ejaculate sperm
Where is sperm produced?
How is its production different to that of oocytes
The testicles
It constantly being produced and used ina process called spermatocytogenesis
How long does the process of spermatocytogenesis take?
Where does it take place
- 90 days
- in the steroli cells of the testicles
Explain the process of spermatogenesis
The spermatogonia start at the edge of the sertoli and migrate towards the lumen of the seminefrous tubule. They are stored in germ cells on the edge of sterols cells for around 15 days where they become motile and migrate into the seminefrous tubule to combine with seminal fluid.
What is the job of the seminal fluid
Provide an acidic pH to combat the alkaline pH of the vagina?
Contains fructose that allows the sperm quick energy
What is testosterone?
Where is it produced?
The male sex hormone produced by Leydig cells in the testis
What are the targets of testosterone
Brain- libido and mood
Liver- synthesis of serum proteins
Male sexual organs- penile growth, prostate growth and function
Bone- accelerated linear growth and stimulation of stem cells in bone marrow
Kidneys- stimulate erythropoietin
Muscle- increase strength and volume
How are hormones controlled in male reproduction
Hypothalmus produces GnRH
Anterior pituitary produces FSH+LH
FSH causes spermatogonia, LH induces androgens
