Flashcards in male reproductive Deck (25):
what is the dartos muscle?
thin muscle layer that covers the scrotum
-brings it toward the body
what kind of muscle is cremaster muscle?
-extrusion of internal oblique
what is contained in the spermatic cord?
pampiniform plexus of testicular veins
what are contained in the lobules of the testes?
what is the mediastinum testis?
hilum of the testes
what is the sustentacular cells?
support cells for the developing sperm within the seminiferous tubules
what is the role of leydig cells?
produce androgens (testosterone)
what does LH do in males?
stimulates leydig cells to produce testosterone (located in the interstitial space)
what does FSH do in males?
acts indirectly to stimulate spermatogenesis
where do the blood vessels, ducts, lymphatic vessels and nerves enter the testes?
which cells produce the sperm?
sertoli cells (sustenacular cells) within the seminiferous tubules
what is the final stage of spermatogenesis called?
spermiogenesis (sperm becomes motile and gains acrosomal cap)
what is contained in the midpiece of the sperm?
what is contained in the acromosal cap?
hyaluronidase (to penetrate egg)
what is responsible for resorbing of sperm?
sterocilia in epididymis
what is the histology of the epididymis and vas deferens?
pseudostratified ciliated columnar
where do the seminal vesicle and the ampulla of the vas deferens meet?
which fluid makes up 60% of semen?
what are the components of the seminal fluid?
prostaglandins (causes os to widen)
clotting proteins (coagulates semen w/in 5 min of ejaculation)
what makes up 25% of semen?
what does the prostate secrete?
PSA (liquifies semen w/in 10-20 minutes after ejaculation)
what is the function of the bulbourethral secretions?
lubricant and neutralizes urine in urethra
which muscle is responsible for ejaculationa?
what is erectile tissue composed of?
blood sinuses surrounded by epithelial cells surrounded by smooth muscle