Three Weeks After Conception,which of the Following Has Happened in an Embryo

question 72

Multiple Choice

Three weeks after conception,which of the following has happened in an embryo?

• A)organ formation
• B)neural tube formation
• C)limb bud formation
• D)primitive eye formation

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Definitions:

Squamous

Scalelike, flat.

Epithelial Cells

Cells that line the surfaces of the body, including skin, blood vessels, organs, and cavities.

Basement Membrane

The basement membrane is a thin, dense layer of extracellular matrix that separates epithelial and endothelial cells from underlying connective tissue, providing support and anchorage.

Stomach

A muscular, hollow organ in the gastrointestinal tract that breaks down food using stomach acid and digestive enzymes, initiating the digestive process.