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chp14 anat&physio

QuestionAnswer
Functions of the Male Reproductive System Facilitate conception by producing and delivering sperm to fertilize the ovum
Sperm Male gametes (sex cells) containing half the normal number of chromosomes
Gametes Sex cells that contain half the chromosomes of normal body cells
Zygote Fertilized ovum containing a full set of chromosomes
Scrotum Sac-like pouch of skin that encloses, protects, and supports the testes
Testes Male gonads responsible for producing sperm and testosterone
Testicles Another name for the testes
Gonads Glands responsible for producing gametes
Seminiferous tubules Small tubes inside the testes where spermatogenesis begins
Spermatogenesis Process of sperm development
Spermatozoa Mature sperm cells
Epididymis Coiled tube where sperm mature and are stored
Function of the Scrotum Keeps testes cooler than body temperature for sperm survival
Pituitary gland Gland that secretes luteinizing hormone (LH)
Luteinizing hormone (LH) Hormone that stimulates testes to produce testosterone
Testosterone Male hormone responsible for secondary sex characteristics and sperm production
Male secondary sex characteristics Facial hair, pubic hair, deeper voice, increased muscle mass
Interior duct system System that transports sperm from testes to ejaculatory ducts
Flagellum Tail of the sperm that allows movement
Vas deferens Tube that transports mature sperm from epididymis toward ejaculatory duct
Ductus deferens Another name for the vas deferens
Spermatic cord Structure carrying sperm through the pelvic region
Semen Sperm-containing fluid expelled during ejaculation
Seminal vesicles Glands that produce sugary fluid nourishing sperm
Ejaculatory duct Duct where seminal vesicles and vas deferens empty semen
Prostate gland Gland that secretes alkaline fluid to lower semen acidity and aid sperm survival
Function of prostate fluid Protects sperm in the acidic environment of the vagina
Ejaculation Process of expelling semen from the penis
Cowper’s gland Gland that secretes lubricating fluid and cleanses the urethra
Bulbourethral gland Another name for Cowper’s gland
Male urethra Tube that carries urine or semen out of the body
Penis Male organ containing the urethra and erectile tissue
Erectile tissue Spongy tissue that fills with blood during sexual arousal
Tunica albuginea Outer covering of the penis
Erection Enlargement and stiffening of the penis caused by blood filling erectile tissue
Glans penis Sensitive distal end of the penis
External urethral orifice Opening where urine or semen exits the body
Prepuce Fold of skin covering the tip of the penis in uncircumcised males
Foreskin Another name for the prepuce
Circumcision Surgical removal of the foreskin
Function of accessory organs Produce and transport semen
Function of seminal vesicle fluid Nourishes sperm with sugary fluid
Function of Cowper’s gland Lubricates surfaces and neutralizes acidic urine in urethra
Why sperm need cooler temperatures They cannot tolerate normal body temperature for long
Approximate sperm released per ejaculation About 300 million sperm cells
Can urine and semen pass through urethra simultaneously? No, the urethra cannot transport both at the same time
Created by: ush
 

 



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