1000ft View Male Reproductive Flashcards
Hormones affecting anterior pituitary travel via ________ blood from the hypothalamus
hypophysial portal
What is the bulbospongiosum?
Muscle around later aspect of the bulb of the penis and proximal body
Innervated by the pudendal nerve
Supports the pevic floor
Helps to expell all of the semen, pushes blood from bulb into body of penis
What is the function of the Ischiocavernosus muscle?
helps maintain erection, compresses venous flow
What are the anatomical sections of the penis?
- Root: contals 3 sections of erectile tissue (crus and bulb)
- Body: suspends from the pubic symphysis, attached via the suspensory ligament (contains the erectile tissues)
- Glands: contains the eternal erethra orifice, contained with in the prepuce, double layer of skin
What is the name of the fascia incasing the penis?
Deep Buck’s Fascia
Is the corpus spongiosum on the dorsal or ventral side of the penis?
Ventral
What muscle will pull the spermatacord upward?
Cremaster muslce
When do the testes descend in-utero?
3 months before birth
What covers the testes?
Tunica vaginalis
What artery supplies the testes?
Internal spermatic artery
Where is sperm made?
Seminiferous tubulues
What are the two cell types within the testes?
Leydig cells and Sertoli cells
What stimulate steroli cells?
Leydig Cells and FSH (FSH will cause sertoli cells to make androgen bonding protein)
How long does it take sperm to mature in the epididymis?
12 days, obtain nutrients and testeosterone
What cells create testosterone when stimulated by LH?
Leydig Cells
What are the contents of seminal fluid?
- Fructose for sperm metabolism
- Prostogladins to protect sperm within vagina
- Fibrinolysin (from prostate): Alkalizes fluid to protect from vagina
What is the pH of sperm?
7.5
How long will sperm live at body temperature?
24-48 hours
Where is sperm stored?
Epididymis
What branch of the nervous system is responsible for an erection?
Parasympathetic
What branch of the nervous system is responsible for ejaculation?
Sympathetic
During ejaculation what catacholamine causes constriction so there is no exchange between urine and semen?
Norepinephrine
What gene is on the Y chromosome and will inhibit female characteristics from continuing to develop?
SRY gene
What ducts will take over to allow male anatomy once the SRY gene is expressed?
Wolffman ducts
