PSYB20H3 Lecture Notes - Lecture 3: Gestational Diabetes, Amniotic Sac, Umbilical Cord
Document Summary
Start at a point of origin, and they start to move away as they develop. Proximodistal principle: cell migration, development proceeds from parts near the centre of the body to the outer ones. Stem cells: blank cells that can become anything in the future (not specialized, embryonic stem cells have no xed fate or function, cell differentiation- cell starts to specialize in speci c structure and function. Approximately 350 different types: focus of research in regenerative research, diabetes, heart disease and other potential cell regeneration, stem cells have a lot of issues but have potentials to be used for research. Cell death: termed apoptosis or cell suicide, selective death. Wednesday, september 21, 2016: normal part of the developmental process. Ex: hand development: in order to make a proper hand with ngers, cells need to die for there to be a speci c development. Gestation: prenatal period of development between conception and birth, normal range is between 37 and 41 weeks.
