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Endocrine System Hormones & Reproduction. Sex & Growth Hormones. Large scale body changes how do they work _________________ start new processes in the body by turning genes on that were lying “dormant”. Pituitary gland hormones. Sex & reproductive hormones ____________

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slide1

Endocrine System

Hormones& Reproduction

sex growth hormones
Sex & Growth Hormones
  • Large scale body changes
    • how do they work
      • _________________
      • start new processes in the body by turning genes on that were lying “dormant”
pituitary gland hormones
Pituitary gland hormones
  • Sex & reproductive hormones
    • ____________
      • _____________________________
      • stimulates egg & sperm production
    • ____________
      • _____________________________
      • stimulates ovaries & testes
      • prepares uterus for fertilized egg
    • oxytocin
      • stimulates childbirth contractions
      • releases milk in nursing mothers
    • prolactin
      • milk production in nursing mothers

hormones

hormones

reproductive hormones
Reproductive hormones
  • ________________
    • ________________
    • sperm production & secondary sexual characteristics
  • ________________
    • ________________
    • egg production, preparing uterus for fertilized egg & secondary sexual characteristics
male reproductive system
Male reproductive system
  • Sperm production
    • over 100 million produced per day!
    • ~2.5 million released per drop!
slide6

seminiferoustubule

sperm

spermatocytes

male reproductive system7
Male reproductive system
  • Testes & epididymis
    • sperm production & maturation
  • Glands
    • seminal vesicles, prostate, bulbourethal
    • produce seminal fluid
      • nutrient-rich
male reproductive system8
Male reproductive system
  • ______________________
    • produces sperm & hormones
  • ______________________
    • sac that holds testicles outside of body
  • ______________________
    • where sperm mature
  • ______________________
    • tubes for sperm to travel from testes to penis
  • Prostate, seminal vesicles, Cowper’s (bulbourethal) glands
    • nutrient rich fluid to feed & protect sperm
female reproductive system10
Female reproductive system
  • ______________________
    • produces eggs & hormones
  • ______________________
    • nurtures fetus; lining builds up each month
  • ______________________
    • tubes for eggs to travel from ovaries to uterus
  • ______________________
    • opening to uterus, dilates 10 cm for birthing baby
  • ______________________
    • birth canal for birthing baby
egg maturation in ovary
Egg maturation in ovary

releasesprogesterone

maintainsuteruslining

produces estrogen

menstrual cycle

LH

Menstrual cycle
  • Controlled by interaction of 4 hormones
    • FSH & LH
    • estrogen
    • progesterone

FSH

ovulation = egg release

egg development

corpus luteum

estrogen

progesterone

lining of uterus

days

0

7

14

21

28

female reproductive cycle

corpusluteum

ovary

yes

corpusluteum

no

Feedback

Female reproductive cycle

eggmatures &

is released(ovulation)

builds up uterus lining

estrogen

progesterone

FSH & LH

fertilized egg(zygote)

maintainsuterus lining

HCG

pituitarygland

pregnancy

progesterone

GnRH

corpus luteum breaks down

progesterone drops

menstruation

maintainsuterus lining

hypothalamus

female hormones
Female hormones
  • FSH & LH
    • _____________________________________________
    • stimulates egg development & hormone release
    • peak release = release of egg (ovulation)
  • Estrogen
    • _____________________________________________
    • stimulates growth of lining of uterus
    • decreasing levels causes menstruation
  • Progesterone
    • _____________________________________________
      • cells that used to take care of developing egg
    • stimulates blood supply to lining of uterus
    • decreasing levels causes menstruation
placenta
Placenta
  • Food & gases diffuse across blood vessels