Which Layer of the Blastocyst Secretes Enzymes That Are Used

question 56

Multiple Choice

Which layer of the blastocyst secretes enzymes that are used by the embryo to penetrate the uterine lining during implantation?

• A)syncytiotrophoblast layer
• B)cytotrophoblast layer
• C)endoderm layer
• D)mesoderm layer
• E)ectoderm layer

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Definitions:

Periodic Table

A tabular arrangement of the chemical elements, organized on the basis of their atomic number, electron configurations, and recurring chemical properties.

Proton Count

The number of protons in the nucleus of an atom, which determines the chemical element of the atom and is denoted as the atomic number.

Eka-Aluminum

A historical name for gallium, predicted by Mendeleev using his periodic table before it was discovered, exhibiting similar properties to aluminum.

Gallium

A soft, silvery metal that is used in electronics, such as semiconductors, due to its unique melting properties.