reproduction part i: anatomy. functions overall: to produce offspring male system: to produce &...
TRANSCRIPT
ReproductionPart I: Anatomy
Functions
Overall: to produce offspring
Male System: to produce & deliver sperm
Female System: produce eggs, provide place for fertilized eggs to develop
Male Anatomy
Bladder
Urethra
Penis
Testes
Scrotum
EpididymisBulbourethral Gland
Prostate Gland
Seminal Vesicle
Vas Deferens
Parts of the Male
Scrotum: the sac that holds the testes◦positioned outside of the abdomen◦Why?◦allows sperm to develop in an environment 2-
3°C cooler than body temperatureTestes: produce sperm
Epididymis: where immature sperm mature, grow tails
Vas deferens: tube, stores some sperm up to 3 months!
Sperm
Sperm: male sex cells◦300 million produced PER DAY!◦3 parts:
Head = DNA Midsection = energy! Tail = swim!
Sperm Development
Heads and Tails testes & epididymis
Seminal vesicles: secrete sugar mixture◦Provides energy for sperm
Prostate Gland: secrete alkaline fluid◦Protects sperm from female fluids
Bulbourethral Gland: secretes fluid◦Lubricates and cleanses urethra◦Why?
Sperm & Fluids = Semen
Sperm Release
Upon arousal:Sperm leave vas deferens
towards Urethra, picking up fluidsfrom Urethra, leave body
Ejaculation: sperm ejected by smooth muscle contractions◦Not voluntary!◦2-6 mL of semen released
Female Anatomy
Oviduct or Fallopian Tubes
Ovary
Uterus
Cervix
Vagina
Bladder
Urethra
Rectum
Anus
Parts of the Female
Ovaries: site of egg production
Oviducts (Fallopian Tubes): transport eggs from ovary to uterus◦*Fertilization happens here*
Uterus: where fertilized egg develops◦Has 2 layers, 1 muscular, 1 thin lining
Cervix: passageway from uterus vagina◦Muscles control this
Vagina: birth canal; passage to the outside