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55 Cards in this Set
- Front
- Back
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descent of gonads
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move downward by action of gubernaculum ligament that guides gonads towards genital swelling
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testes
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primary organ, produces gametes, primordial germ cells that undergo meiosis to produce sperm
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interstitial cells
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produce testosterone
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sertoli cells
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nurturing cells, assist in sperm production, helps in blood testis barrier
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semineferous tubules
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sperm factory, long coiled tubes
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epididymis
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nursery for spermatazoa, sperm mature here, develop a tail and learn to swim
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ductus deferens
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carries sperm away from epididymis, takes to prostate region where sperm is introduced to ejaculatory duct
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seminal vesicle
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produce 60% of semen, fructose, hormones. Activates sperm
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ejaculatory duct
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pierces prostate and empties sperm into the prostatic urethra
"point of no return" |
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prostate
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secretions of prostatic fluid join seminal fluid and sperm in urethra
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semen
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combo of sperm, seminal fluid, and prostatic fluid
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urethra
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in males 19-25cms, tube shared by urinary and repro tracts. Urine is anti-microbial but also spermicidal and must be cleansed with alkaline BUG secretion before ejaculation
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Bulbo-Urethral Gland
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secretes viscous pre-ejaculatory fluid which is alkaline and serves as a cleaning agent to clear urine and acidity from the urethra
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fallopian tube
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ovum is held here for 48-72 hours then released to implant if fertilized, otherwise it is sloughed in menses
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average female cycle lasts
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28-33 days
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positive feedback between LH and estrogen lead to LH peaking at day 14 causing
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Ovulation
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contraceptive
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blocks union of sperm and egg
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contraceptive: diapgraphm
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chemical spermicide
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contraimplants
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prevention of implantation of zygote
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type of contraimplant
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IUD
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sterilization
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male: vasectomy
female: tubes "tied" |
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gamete
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sperm or ova, haploid
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diploid
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full set of chromosomes
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1st Meiotic Phases of Spermatogenesis
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Reduction
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Reduction phase
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divides chromosome info in half creating 2 new cells
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Division Phase: Spermatogenesis
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centromeres replicate DNA, divided into 2 cells from secondary spermatocyte
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tail is formed once the spermatozoan froms and can occur in
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testis or epididymis
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Spermatogenesis creates how many spermatozoans?
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4
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Oogenesis creates how many Ova?
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1
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Reduction Phases: Oogenesis
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chromosomal info is divided equally into 2 new cells
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primary polar body
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one cell takes up the cytoplasm and the other shrivels unable to survive, other cell will absorb ir
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Division Phase: Oogenesis
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centromeres replicate DNA and divided into 2 secondary oocytesm a secondary polar body is formed and once again, ovum will absorbs it leaving only 1 viable ovum for fertilization
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fertilization
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results in diploid single cell called zygote, process where sperm brings DNA necessary to the egg to make it diploid
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how many sperm make it to the egg?
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only 100-2000 of the million or so released
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who releases HCG
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zygote
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corpora cavernosa
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erectile tissue that contains most the blood in the penis during erection
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spermatic cord
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consists of connective tissue, ductus deferens, blood vessels, lymphatics, and spermatic artery
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tunica vaginalis
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lines scrotal cavity
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glans
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enlargement of corpus spongiosum
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spongy urethra
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transports both sperm and urine, 15 cm long
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corpus spongiousum
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causes tumescence of erectile tissue
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ureter
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propel urine from kidney
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cremateric mucsle
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elevates the scrotum for temp regulation
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lactiferous ducts
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store milk until released at the nipple
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tail of breast
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70% of breast cancers have been identified here
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myo-epithelial cells
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line alveoli and produce milk
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fimbria
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fingerlike extensions of the uterine tube
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cervix
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fibrous ring that keeps uterus closed during pregnancy
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pampiniform plexus
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network of arteries and veins help with cooling of testes
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does testicular artery have a pulse
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yes
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post fornix
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flexible, will move backwards to cause a deepening to hold sperm in place, a holding tank
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inguinal ring
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blood supply for testes goes through this
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blastoclast
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fertilized egg before implantation
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tumescense
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refers to engorgement of erectile tissue
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transudation
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passage of serum or other fluid thru a membrane or tissue surface
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