Chapter 9-Embryology Flashcards
Urethra
Exit for semen and urine
Testes
Where sperm produced
Paturition
labor and delivery
- Dilation- Oxtocin released
2. Expulsion- cervix dilated (10cm) 3. Afterbirth- Placenta delivered
Uterus
Organ where baby grows, develops
Cervix
Lower portion of uterus
Zygote
Fertilized egg
Endometrium
Inner layer of uterus
Menstruation
Shedding lining of uterus
Epididymis
Where mature sperm stored
Ovaries
Where ova produced
3 Germ layers
Endoderm-Inner layer (digestive tract)
Mesoderm-Middle layer (muscles, skeleton)
Ectoderm-Outer layer (skin)
Fallopian tubes
Passageway for egg, fertilization takes place
Vas Deferens
Passageway for sperm
Cleavage
Series of cell divisions (mitosis)
Acrosome
Head of sperm, releases enzymes to digest jelly layer
Morula
Solid ball of cells
Blastula
Hollow ball of cells, implants in uterus
Fertilization
Fusion of sperm and ova to form zygote
Vagina
Birth canal
Placenta
Provides oxygen, nutrients, forms between 9-12 weeks
Implantation
Blasta burries into lining of uterus
HCG
Hormone, measured in pregnancy tests
Gastrulation
Forms gastula, cells migrate, differentiate, organs become 3 germ layers
Gestation
Time it takes for growth/development (9 months)
