Exam II: Male Repro. Physiology Flashcards
Blood supply to the scrotum
External pudendal
Nerve supply to the scrotum
Genitofemoral n.
Lymph drainage of scrotum
Superficial inguinal lymph node
Lymphatic drainage of the testes
Lumbar lymph nodes
Testes approximately ___ degrees C lower than core body temp.
4
countercurrent arterio-venous exchange of testes
Pampiniform plexus
What are the 3 functions of the pampiniform plexus?
- Thermoregulation
- Concentration of testosterone
- Reduced pulsatility
What are the 2 cell types of the seminiferous tubules
- sertoli
2. spermatogenic cells
What are the 3 functions of the blood testis barrier?
- Maintains environment
- Protects germ cells
- Prevents autoimmune response to sperm
What is the function of the epididymis
sperm maturation and storage
T/F the epididymis is androgen independent?
F. Androgen dependent
What are the 2 types of penile structure?
- musculocavernosus
2. fibrous
forms the body of the penis
corpus cavernosum
surrounds the urethra
corpus spongiosum
H that inhibits development of paramesonephric ducts in male embryo
AMH
Peptide hormone that is secreted by hypothalamus, that acts on anterior hypophysis to inc. secretion of LH and FSH
GnRH
H that binds and acts on leydic cells to stimulate androgen production from leydig cells
LH
H secreted by pituitary gland and enhances LH-induced T secretion
PRL (Prolactin)
H that acts on Sertoli cellsto promote p synthesis
FSH
What 4 hormones are produced by sertoli cells in response to FSH
- ABP
- Inhibin
- Estrogens
- T to dihydroT
H released from sertoli cells into the seminiferous tubules, that ensures high intratubular conc. of T
ABP
H secreted from sertoli cells that has a negative feedback effect on pituitary release of FSH
inhibin
Steroid hormone produced by interstitial cells under LH influence
T
T has a negative feedback on hypothalamus to dec. _____
GnRH
