Term
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Definition
| testes which produce gametes (sperm) and produce and secrete the sex hormone testosterone |
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Term
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Definition
| aid in the formation of semen and transport sperm. epididymis, ductus deferens, ejaculatory duct, seminal vesicle, prostate gland, bulbourethral glands, penis |
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Term
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Definition
| outside pelvic cavity. within scrotal sac |
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Term
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Definition
| production of sperm. production of testosterone |
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Term
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Definition
| small, oval structures surrounded by CT |
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Term
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Definition
| seminiferous tubules, interstitial cells (of leydig), mature sperm |
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Term
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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 |
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Term
| interstitial cells (of Leydig) |
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Definition
| produce and secrete testosterone in testes |
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Term
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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 |
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Term
| embryological development of testes |
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Definition
| develop in abdominal cavity and descend down into scrotal sac through inguinal canal during 28th week of pregnancy |
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Term
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Definition
| passage of spermatic cord and testes out of abdomen into scrotal sac |
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Term
| contents of spermatic cord |
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Definition
-vas deferens
-testicular artery
-pampiniform plexus of veins
-nerve
-lymphatics |
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Term
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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 |
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Term
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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 |
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Term
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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 |
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Term
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Definition
| produce components of semen |
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Term
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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 |
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Term
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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) |
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Term
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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 |
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