Embryonic stem cells growing in a lab dish are bathed in a "cocktail" of chemicals that cause them to specialize into branching networks of single-nucleated cells that pulsate in unison. This tissue is most likely
A)smooth muscle.
B)skeletal muscle.
C)cardiac muscle.
D)epithelial tissue.

Question

Quizplus · Accepted Answer

The description of branching networks of cells that pulsate in unison suggests the formation of a tissue similar to cardiac muscle, which forms the heart's network of cells that contract synchronously to produce its pumping action. Smooth muscle, on the other hand, does not typically form such networks, and skeletal muscle consists of multi-nucleated cells that do not pulsate in unison. Epithelial tissue is also highly unlikely to form from embryonic stem cells under such conditions.

Embryonic Stem Cells Growing in a Lab Dish Are Bathed