Male Reproductive System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
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| Male & female reproductive systems | show 🗑
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| Gonads | show 🗑
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| Gametes | show 🗑
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| show | sperm
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| Androgens | show 🗑
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| show | main hormones produced and secreted by ovaries
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| show | a fertilized egg; the first cell of a potentially new individual; receives 23 chromosomes from egg and 23 chromosomes from sperm to equal 46
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| Male reproductive system | show 🗑
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| show | epididymis, vas/ductus deferens, ejaculatory duct, urtethra
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| show | seminal vesicles, prostate gland, Copwer’s/bulbourethral glands
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| Scrotum | show 🗑
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| show | under cold conditions, wrinkles and thickens the scrotal skin thus reducing heat loss; under hot conditions will relax
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| show | will pull testes up toward warm abdominopelvic wall in cold conditions; relaxed in hot conditions
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| show | divided into lobules, each containing 1-4 seminiferous tubules
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| show | specific sites of sperm cell production in testes; walls consist of spermatogenic cells embedded in sustentacular/sertoli cells
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| Spermatogenesis | show 🗑
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| show | found between seminiferous tubules; produce and secrete masculinizing hormones known as androgens (the main such being testosterone)
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| show | venous network from which each testicular vein arises; helps provide a cooling effect for the testes
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| Varicocele | show 🗑
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| Hydrocele | show 🗑
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| show | curable if detected early enough; men advised to regularly examine their testicles for lumps; however, most lumps are relatively harmless varicoceles and hydroceles
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| Form in abdominopelvic cavity; descend into scrotum about two months before birth | show 🗑
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| Cryptorchidism | show 🗑
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| Meiosis | show 🗑
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| Sperm Cell Anatomy | show 🗑
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| Head of sperm | show 🗑
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| Acrosome | show 🗑
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| show | part of a sperm; contains many mitochondria that produce ATP needed to supply energy required for sperm to use its tail swimming
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| Tail of sperm | show 🗑
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| Sustentacular/sustentocyte/sertoli/nurse cells | show 🗑
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| show | formed by junctions b/t sustentacular cells; prevents protein antigens that occur in differentiating sperm from entering bloodstream & activating immune system; if breached, male’s body will attack own sperm
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| Epididymis | show 🗑
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| Vas/ductus deferens | show 🗑
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| show | procedure in which small incision is made into each side of scrotum to sever each ductus deferens; cut ends are tied off, fused shut, or plugged; prevents sperm cells from leaving body; reduces volume of semen by about 5%
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| Spermatic cord | show 🗑
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| show | slit-like passageway through anterior pelvic wall that courses just deep & inferior to aponeurosis of external oblique muscle
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| Inguinal hernia | show 🗑
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| show | formed by union of a seminal vesicle w/ end of vas deferens; specifically located w/in prostate gland; propels ejaculated sperm into prostatic urethra
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| Male urethra | show 🗑
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| show | first portion of male urethra; runs through and is surrounded by prostate gland below urinary bladder
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| Membranous urethra | show 🗑
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| Spongy/penile urethra | show 🗑
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| Male accessory sex glands | show 🗑
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| Semen | show 🗑
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| show | paired glands on posterior surface of male bladder; secretion makes up ~60% of semen; has chemicals to enhance sperm function; has yellow pigment that fluoresces under UV light; joins w/ end of ductus/vas deferens to form an ejaculatory duct w/in prostate
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| Prostate gland | show 🗑
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| show | enzyme in prostate secretion; measuring the level of this enzyme in a man’s blood is the most important method of screening for prostate cancer
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| show | non-cancerous enlargement of prostate gland that occurs in most elderly men; urination becomes increasingly difficult due to prostate presses against prostatic urethra; can be detected via digital rectal exam
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| show | paired, pea-sized glands below prostate gland w/in urogenital diaphragm; produce clear mucus that drains into penile/spongy urethra when male becomes sexually excited; small amount of mucus tends to accumulate at tip of penis prior to ejaculation
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| show | most of length consists of shaft; ends in glans penis
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| show | three columns (bodies) or erectile tissue
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| show | loose cuff of skin surrounding tip of penis; generally removed via circumcision shortly after birth
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| Erection | show 🗑
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| Ejaculation | show 🗑
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| Epididymis—ductus/vans deferens—ejaculatory duct—urethra | show 🗑
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| Male perineum | show 🗑
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| Testosterone | show 🗑
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Created by:
mbtrimm
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