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35 Cards in this Set
- Front
- Back
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Sex cells
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gametes
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male gametes
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spermatozoa
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female gametes
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oocytes
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male primary sex organs
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gonads or testes
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male secondary sex organs
three catagories 3,3,1 |
1. sperm-transporting ducts
epididymides, ductus deferentia, ejaculatory ducts 2. accessory glands seminal vesicles, prostate and bulbourethral glands 3. copulatory organ - penis |
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male secondary sex characteristics
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physique, voice pitch, body hair
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perineum
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diamond shaped region between the symphysis pubis and the coccyx
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scrotum functions
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support and protect the testes, and to regulate their position relative to the pelvic region of the body.
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dartos
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layer of smooth muscle fibers in the subcutaneous tissue of the scrotum
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cremaster
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small band of skeletal muscle extending through the spermatic cord
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scrotal septum
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subdivides the scrotum into two compartments
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perineal raphe
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median longitudinal ridge extending forward to the undersurface of the penis and backward to the anal opening
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two tunics covering the testes
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tunica vaginalis - outer
tunica albuginea - tough fibrous membrane directly covering each testis- inner |
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testicular lobules
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partitions in the testis formed by inward extensions of the tunica albuginea
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seminiferous tubules
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functional units of testes where spermatozoa are produced
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spermatogonia
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specialized germinal cells which undergo meiosis to eventually form sperm
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sustentacular cells
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produce and secrete nutrients for the developing spermatozoa
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interstitial cells
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produce and secrete male sex hormones
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rete testis
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tubular network where spermatozoa mature
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efferent ductules
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spermatozoa are transported out of the testis and into the epididymis through a series of these
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spermatozoon
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mature sperm cell
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3 parts of a sperm cell and how many chromosomes
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head, flagellum, acrosome(tip of head)
23 |
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epididymis
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contains sperm in their final stages of maturation. Releases them to ductus deferens
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ductus deferens
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conveys sperm from the epididymis to the ejaculatory duct
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path of ductus deferens
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exits scrotum,
ascends along the posterior border of the testis, penetrates the inguinal canal, enters the pelvic cavity, terminates at the ampulla where it joins the ejaculatory duct. |
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inguinal canal
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passageway for the spermatic cord through the abdominal wall
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ejaculatory duct
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formed by the union of the ampulla of the ductus deferens and the duct of the seminal vesicle. empties into the prostatic urethra
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seminal vesicles
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secrete substance that contributes to the motility and viability of the sperm
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prostate
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assists in sperm motility and protects sperm from acid environment of vagina
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bulbourethral glands
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During sexual arousal...secretes a mucoid substance that coats the lining of the urethra to neutralize the ph of urine residue. also lubricates tip of penis.
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urethra
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conmmon tube for both the urinary and reproductive systems in male
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3 regions of urethra and function
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prostatic part of the urethra -
receives drainage from the small ducts of the prostate and two ejaculatory ducts membranous part of the urethra - external urethral sphincter located in this region - passes through urogenital diaphragm spongy part of the urethra - extends from urogenital diaphragm to end of penis. bulbourethral glands attach to spongy part |
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urethral glands
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secrete mucous into lumen of urethra
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penis
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copulatory organ on the male reproductive system
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spermatic cord
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extends from the testis to the inguinal canal and consists of the ductus deferens, testicular artery and venous plexis, nerves, cremaster muscle, lymph vessels and connective tissue
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