Flashcards in Intro to Embryology Deck (26)
FSH AND LH are released where and when?
ANTERIOR PITUITARY GLAND, PRIOR TO FERTILIZATION
Name the uterine tube segments after leaving the ovary
Ovary -> fimbriae -> infundibulum -> ampulla -> isthmus
? - > sperm
? -> oocyte
What is the maturation of sperm called?
What is Teratology?
The study of abnormal development
What is the embryonic period?
Fertilization to 8 weeks
What is the fetal period?
Week 9 to term
What happens during embryonic period?
Initial development of all major structures and establishment of all organ systems
What happens during fetal period?
Differentiation and growth of organs and tissues
What is capacitation?
Surface proteins removed from acrosome and allows acrosome to react with corona radiata and ZP and release enzymes
What is acrosome reaction?
Occurs on contact with ZP, release of enzymes, allows penetration of ZP and facilitates fertilization
What are the phases of fertilization?
Coronal cells, acrosomal reaction, plasma membranes fuse, meiosis 2 resumes, meabolism of oocyte increases
What is a zygote?
Haploid pronucli fuse, forming diploid
What are blastomeres?
Early embryonic cells after zygote undergoes cleavage
What is a morula?
A blastomere with 12-32 cells (3-4d). ORGANIZATION STARTS TAKING PLACE
What is a blastocyst?
Fluid enters the blastocystic cavity, separates the blastomeres, and the ZP degenerates
What happens during prophase 1?
Baby is born and oocytes halt
When does attachment happen?
When does differentiation of the trophoblast happen?
What are the 2 parts of the trophoblast?
Cytotrophoblast - not embedded
Syncytiotrophoblast - embedded
What is an ectopic pregnancy?
Blastocyst implants outside normal uterine locations
What happens during puberty?
Oocytes begin meiosis again and finish meiosis 1. FSH and LH surge
What is a hypoblast?
Small cuboidal cell formed from the embryoblast - primary endoderm
What happens before ovulation?
Egg is halted at metaphase 2, ovulation causes oocyte to enter Fallopian tube