Rb3 - Fertilization and Dev't

FERTILIZATION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

ACROSOMAL REACTION ,[object Object],[object Object],[object Object],[object Object]

FUSION OF MEMBRANES Effect #1: Fast Block to Polyspermy (1/10 th sec) 1. Triggering of electrical response in egg membrane 2. Ion channel gates open 3. Na + changes membrane potential (depolarization)

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],FUSION OF MEMBRANES … and then the outer layer will serve as the FERTILIZATION MEMBRANE. (prevents multiple fertilization)

CORTICAL REACTION ,[object Object],[object Object]

SUMMARY OF FERTILIZATION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PREGNANCY/ GESTATION ,[object Object],[object Object],[object Object],[object Object]

PREGNANCY/ GESTATION FIRST TRIMESTER ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],10. Secretion of hormones to signal presence and control mother’s reproductive system (ex. HCG) FIRST TRIMESTER Human Chroionic Gonadotropin (HCG) – peptide hormone produced by embryo which keeps progesterone levels up to make uterus lining thick

SECOND TRIMESTER ,[object Object],[object Object],[object Object],[object Object],[object Object]

THIRD TRIMESTER ,[object Object],[object Object],[object Object],[object Object],[object Object]

HORMONES TO INDUCE AND REGULATE LABOR ,[object Object],[object Object],[object Object],[object Object],[object Object]

MOMMY & BABY WHY DOESN’T THE MOM’S BODY REJECT THE BABY? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MOMMY & BABY WHY DOESN’T THE MOM’S BODY REJECT THE BABY? ,[object Object],[object Object],[object Object]

PARTURITION ,[object Object],[object Object],[object Object],[object Object],[object Object]

DILATION ,[object Object],[object Object],[object Object],[object Object],[object Object]

FETAL EXPOSURE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

UMBILICAL CORD CLOSURE ,[object Object],[object Object]

PLACENTAL EXPOSURE ,[object Object],[object Object]

HORMONES INVOLVED IN PARTURITION ,[object Object],[object Object],[object Object],[object Object]

LACTATION ,[object Object],[object Object],[object Object],[object Object]

START OF SECRETORY ACTIVITY ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],START OF SECRETORY ACTIVITY

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],EJECTION OF MILK

EJECTION OF MILK ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Rb3 - Fertilization and Dev't

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