A&P Chapter 31 The Reproductive System
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Transcript of A&P Chapter 31 The Reproductive System
Chapter 31A&P
IntroductionThe function of the
reproductive system is human reproduction.
Human reproduction results from the union of a female sex cell and a male sex cell.
Female reproductive systemThe Vagina
Hallow, pear shaped muscular organ.
Located in the anterior portion of the pelvic cavity.
Three areas of the uterus:
BodyIsthmusNeck or cervix
Female reproductive systemFallopian Tubes
Also called uterine tubes or oviducts
Found laterally on either side of the uterus
Move the ovum from the ovaries to the uterus
Female reproductive systemOvaries
Located on either side of the uterus
Attached to the uterus by the ovarian ligament
Produce ova and hormones
Female reproductive systemThe Vagina
A musculomembranous tube that extends from the uterus to the vestibule.
Functions of the uterus include:
CopulationPassageway for
discharge of menstruation
Birth canal
Female reproductive systemVulva consists of 5
organs that comprise the external female genitalia:
Mons pubisLabia majoriaLabia minoriaVestibuleClitorisThe area between the
vulva and the anus is the perineum.
Female reproductive systemBreasts
Mammary glands
Provide milk for infants
Prolactin stimulates the production of milk
Menstrual CycleThe onset is called
menarche.
Cessation is called menopause.
Repeats approximately every 28 days
Male reproductive systemPurpose is to provide
sperm cells to the ovum.
Consists of the following:Testes and ductsUrethraAccessory glands;
bulbourethral, prostate and seminal vesicles
Accessory sex organs; scrotum and penis
Male reproductive systemExternal organs
External organs consist of the scrotum and the penis.
Scrotum contains smooth muscle fibers that contract, allowing for viability of the spermatozoa.
Male reproductive systemInternal Organs
Testes (gonads)-site of development of the male reproductive cells & the hormone testosterone
Epidydymis- coiled tube 13-20 feet in length, ends at the ductus deferens; maturation of sperm cells.
Male reproductive systemDuctus deferens- vas
deferens, it is the excretory duct of the testes
Seminal vesicles- store sperm and produce semen.
Prostate gland-lies below the bladder and secretes fluid into the semen.
Male reproductive systemBulbourethral gland-
secrete mucous secretion into the seminal fluid before ejaculation.
Urethra- extends from the bladder to the urethral orifice (meatus)
Prostate cancer warning signsThe following are some potential prostate
cancer warning signs or signs of BPH:incomplete emptying of the bladder dribbling difficulty starting urination reduced force of the stream frequent urination of small amounts pain with urination ejaculation pain blood in the urine