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Pathway of sperm from the testis to the urethra in their proper order.
Seminiferous tubules -> epididymis -> vas deferens -> urethra
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Male gonads; produces sperm and androgens. Located outside body in scrotum.
Testis
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Highly coild tube adjacent to testis.
Epididymis
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Site of testosterone production
Testis
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The ___ conveys both sperm and urine down the length of the penis.
urethra
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Organs (4) that contribute to the formation of semen are ____ ____ ____ and ____
testes, seminal vesicles, prostate gland, and bulbourethral glands
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The ____ is an external skin sac that houses the testes
Scrotum
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The ____ surrounds the urethra at the base of the bladder; produces a milky fluid
Prostate
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Organ that delivers semen to the female reproductive tract.
Penis
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Tube that transports sperm during ejaculation from epididymis to urethra.
Vas deferens
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Three important glands of the male reproductive system are the ____ ____, ____ ____, ____ ____
Seminal vesicles, prostate gland, and bulbourethral glands
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The ____ produces lubricating mucus that cleans the urethra.
Bulbourethral glands
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The ____ are passageways from the epididymis to the ejaculatory duct + urethra
vas deferens
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Secrete a thick, yellowish, alkaline fluid containing fructose, vesiculase (coagulationg enzyme) & prostaglandins.
Seminal vesicles
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____ conveys both sperm and urine down the length of the penis
urethra
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Secretes a thin, milky fluid containing zinc and fibrinolysin (anticoagulating enzyme)
Prostate gland
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Secrete tiny amount of alkaline mucus into urethra just before ejaculation.
Bulbourehtral glands
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The scrotum is __ cooler than body temperature
~2 degrees (Celsius)
http://en.wikipedia.org/wiki/Scrotum
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Copulatory organ of male, contains 3 columns of erectile tissue, delivers sperm into vagina
Penis
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External sac enclosing the testes; ~ 2 degrees cooler than the body temperature
http://en.wikipedia.org/wiki/Scrotum says the units are Celsius
Scrotum
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Development of sperm from germ cells (spermatogonia) by meiosis
Spermatogenesis
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What three things occur during the Prenatal period of a male's life?
1) PCGs migrate to genital ridges (week 3)2) PGCs proliferate and differentiate into spermatogonia (week 5,6, and 7)3) Spermatogonia become inactive
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Spermatogonia remain inactive from ___ to ___
Postnatal -> Prepuberty
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Spermatogenesis occures in seminiferous tubules of testes from ___ to ___
Puberty -> Death
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Stage 1 of male reproduction process.
Proliferation & Regeneration
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Spermatogonia (2n) proliferate & differentiate into 3 types: (meiosis) ____ ____ & _____
Type A Dark Type A Pale & Type B
(It was noted that the reverse pathway regenerates stem cells)
I figured this was Type B to Pale A to Dark A
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____ are dormant (reserves).
Type A Dark
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___ proliferate forming new Type A pale and Type B
Type A Pale
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___ differentiate into primary spermatocytes (2n)
Type B
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Stage 2 of male reproduction process.
Meiosis
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The ____ spermatocyte divides by____ (the process) into two ____ spermatocytes
primary; Meiosis I; secondary
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The ____ spermatocytes divide by ____ (the process) into four ____
secondary; Meiosis II; spermatids
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Stage 3 of male reproduction process.
Spermiogenesis
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During Spermiogenesis ___ is transformed into ____
Spermatid; sperm
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4 events that occur during the transformation of a spermatid into sperm are ____ ____ ____ & ____
nucleus condenses, acrosome forms, flagellum forms, cytoplasm reabsrobed by Sertoli cells
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Where does sperm go once formed?
Lumen of seminiferous Tubule then epidydimis
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3 parts for mature sperm are ____ ____ & ____
Head, Middlepiece, and tail
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Two parts of the head of a sperm cell are ___ & ___
Acrosome and nucleus (n)
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The middlepiece of a sperm cell contains the ____
mitochondrion
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___ is a functional motile gamete
Sperm (n)
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___ are the products of meiosis II
Four spermatids (n)
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___ are the products of meiosis I
Two secondary spermatocytes (n)
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____ ____ and ____ all contain 23 chromosomes
Secondary spermatocytes, spermatids, and sperm.
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____ are aka stem cells
Spermatogonium (2n)
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____ and ____ are two hormones necessary for sperm production.
Testosterone and FSH (follicle stimulating hormone)
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The ____ is theDNA- containing area of the sperm.
nucleus in the head of the sperm
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The enzyme containing sac that aids in sperm penetration of the egg is the ____.
Acrosome.
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The part responsible for movement is the ____.
flagella.
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The metabolically active organelles that provide ATP to energize sperm movement is the ____.
Mitochondria in the neck region.
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