Stem Cells Flashcards
From embryo to adulthood, small bank of _ retain ability to develop into other cells
Unspecialized cells
Animal embryo begins life as a ball of _
Unspecialized cells
To go from embryo to adult, stem cells must specialize into
Various types of cells
Stem cells specializing into various types of cells is a process called
Differentiation
During differentiation, cells become less _ as they are committed to certain roles
Versatile
As organism develops, stem cells decline in _ (2)
Number
Potency (ability to specialize)
Salamanders many stem cells allow them to regrow (2)
Organs
Limbs
At earliest stage, embryo is a tiny, solid body of cells called a _
Morula
Morula’s cells are _ meaning they can differentiate into any cell if embryo
Totipotent
In most mammals, morula includes membrane that forms the _
Placenta
As embryo develops, small sphere called a _ forms
Blastocyst
After blastocyst. For the first time, some of embryo’s cells are _
Specialized
Blastocyst’s Outer cells form _ in most mammals
Placenta
Blastocysts inner cells are _ can differentiate into many, but not all cells
Pluripotent
As adult _ are increasingly rare
Stem cells
