Term
|
Definition
| first 2 weeks, formation of primitive germ layers |
|
|
Term
|
Definition
| 8 weeks, organ systems develop |
|
|
Term
|
Definition
| last 30 weeks, organ systems grow and mature |
|
|
Term
|
Definition
| Species Specific sperm receptor located on the zona pellucida |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Perivitelline space, ZP3 inactivated |
|
|
Term
|
Definition
| cell having the potential to any tissue type necessary to development |
|
|
Term
|
Definition
| after differentiation (or specialization), can develop into tissues other than developmental |
|
|
Term
|
Definition
| Identical twins - identical genotype caused by break off of totipotent cells |
|
|
Term
|
Definition
| Fraternal Twins - multiple ovulations and multiple fertilizations |
|
|
Term
|
Definition
|
|
Term
|
Definition
| cavity in the center of the morula |
|
|
Term
|
Definition
| forms the placenta and membranes (amniotic & chorion) |
|
|
Term
|
Definition
|
|
Term
|
Definition
| burrowing of the blastocyst in the uterine wall |
|
|
Term
|
Definition
| Organ of nutrient and waste product exchange between the embryo and the mother |
|
|
Term
|
Definition
| no immune response is triggered |
|
|
Term
|
Definition
|
|
Term
|
Definition
| stays on embryonic side of placenta - provides protective barrier between embryonic and maternal blood |
|
|
Term
|
Definition
| invades endometrium of the uterus |
|
|
Term
|
Definition
| Blood vessels digested by syncytiotrophoblast to form pools of blood |
|
|
Term
|
Definition
| embryonic structure facing the maternal tissues consisting of the embryonic capillary wall, besement membrane, and syncytiotrophoblast |
|
|
Term
|
Definition
| forms inside blastocele from endoderm |
|
|
Term
|
Definition
| formation of three distinct germ layers that will give rise to many sturctures of the body |
|
|
Term
|
Definition
| migration of ectodermic cells towards the caudal end of disk |
|
|
Term
|
Definition
| structure that extends from the cephalic end of the primitive streak |
|
|
Term
|
Definition
| formation of the notocord |
|
|
Term
|
Definition
| eventually to form the brain and spinal cord |
|
|
Term
|
Definition
|
|
Term
|
Definition
| formed from mesoderm immediately adjacent to the neural tube - give rise to the skull, vertebral column & skeletal muscles |
|
|
Term
|
Definition
| forms as the cephalic and caudal ends are seperated ("pinched off") from the main yolk sack |
|
|
Term
|
Definition
|
|
Term
|
Definition
| opens to form the urethra and anus |
|
|
Term
|
Definition
| pharynx, lungs, liver and pancreas |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| forms yolk sac and in turn the gut |
|
|
