Shared Flashcard Set

Details

male reproductive system
lecture 36
19
Anatomy
Undergraduate 2
12/10/2010

Additional Anatomy Flashcards

 


 

Cards

Term
primary sex organs
Definition
testes which produce gametes (sperm) and produce and secrete the sex hormone testosterone
Term
secondary sex organs
Definition
aid in the formation of semen and transport sperm. epididymis, ductus deferens, ejaculatory duct, seminal vesicle, prostate gland, bulbourethral glands, penis
Term
testes location
Definition
outside pelvic cavity. within scrotal sac
Term
function of testes
Definition
production of sperm. production of testosterone
Term
structure of testes
Definition
small, oval structures surrounded by CT
Term
contents of testes
Definition
seminiferous tubules, interstitial cells (of leydig), mature sperm
Term
seminiferous tubules
Definition
-functional unit of testes
-site of sperm production
-spermatogonia- developing sperm in various stages
-sertoli cells- "nurse cells" line tubules and produce nutrients required to maintain developing sperm
Term
interstitial cells (of Leydig)
Definition
produce and secrete testosterone in testes
Term
mature sperm
Definition
-head, body, tail
-acromosome- located at tip of head, contains enzymes which help penetrate ovum
-23 chromosome (22 autosomes, 1 sex chromosome)
-life expectancy: 48-72 hrs after ejaculation
-approximately 50-150 million per milliliter of ejaculate
Term
embryological development of testes
Definition
develop in abdominal cavity and descend down into scrotal sac through inguinal canal during 28th week of pregnancy
Term
inguinal hernia
Definition
passage of spermatic cord and testes out of abdomen into scrotal sac
Term
contents of spermatic cord
Definition
-vas deferens
-testicular artery
-pampiniform plexus of veins
-nerve
-lymphatics
Term
epididymis
Definition
-attached to the posterior surface of the testes
-17 ft. long coiled tube. contains millions of sperm in their final stage of development
-stores sperm and transports sperm from testes to the ductas deferens
Term
ductus deferens
Definition
location- passes from scrotal sac within the spermatic cord to enter the pelvis
vasectomy-cut and ligate the ductus deferens- prevents passage of sperm into urethra
fibromuscular tube
transports sperm from the epidymis to the ejaculatory duct
Term
ejaculatory duct
Definition
begins on posterior side of prostate. passes through prostate gland to join urethra formed by union of ductus deferens and duct of seminal vesicles
Term
accessory glands
Definition
produce components of semen
Term
seminal vesicles
Definition
-posterior to bladder, near base
-glandular organ which contains smooth muscle, which contracts to release contents
-produces an alkaline fluid rich in fructose to provide energy for sperm (60%)
-secretes prostaglandin- capable of causing uterine contractions to help sperm move through this organ
Term
prostate gland
Definition
-just inferior to the neck of the bladder. surrounds 1st portion of urethra
-secretes an alkaline fluid which contains enzymes. helps to neutralize acidic environment of vagina (~30% of semen)
Term
bulbourethral glands
Definition
-muscular layer of the pelvic floor
-small glands with a duct opening into the urethra
-secrete a mucous-like fluid which lubricates the urethra
Supporting users have an ad free experience!