Chapter 6 - Human Reproductive

Chapter 6 - Human Reproductive -...

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Unformatted text preview: Reproduction/Cartwright(Sp10) Human Reproduction and Development Sexual Reproduction- Overview Male Reproductive System Overall functions... 1. production of sperm (male gametes) 2. delivery of sperm into female reproductive system Sperm head w/ haploid nucleus midpiece w/ lots of mitochondria for power tail to propel sperm toward egg Testes (testis) male gonad where sperm development begins where testosterone and other androgens are produced Epididymis organ above testes where sperm development is completed sperm are stored here Reproduction/Cartwright(Sp10) Vas Deferens tubing connecting epididymis to urethra sperm move through this passageway initially during ejaculation Urethra tubing that serves two functions channel for excretion of urine from bladder channel for sperm during ejaculation glands add seminal Fuid to sperm = semen Fuids function as nourishment, a lubricant, and help sperm to survive the acidic environment of the female Glands prostate gland Bulbourethral gland seminal vesicle prostate gland urethra seminal vesicle bulbourethral gland vas deferens epididymis penis testis urinary bladder 1. testes 2. epididymis 3. vas deferens 4. excretions from glands added 5. expelled out urethra The route of sperm Androgens male hormones, e.g. testosterone several functions... 1. in XY fetus androgens determine the development of the external sex organs 2. w/o androgens, the fetus develops into a female Reproduction/Cartwright(Sp10) 10 weeks Y present Y absent 7 weeks birth approaching penis vaginal opening appearance of structures that will give rise to external genitalia appearance of uncommitted duct system of embryo at 7 weeks Y present Y absent penis testis ovary uterus vagina testes ovaries Female Reproductive System overall functions... 1. produce eggs (female gametes) 2. receive sperm from male reproductive system 3. sustain fetus throughout pregnancy Ovaries female gonads site of egg production secrete female hormones......
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Chapter 6 - Human Reproductive -...

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