The Layer of the Digestive Tube That Contains Abundant Elastin

question 2

Multiple Choice

The layer of the digestive tube that contains abundant elastin plus blood vessels, lymphoid nodules, and deep glands is the

• A) adventitia.
• B) submucosa.
• C) muscularis.
• D) serosa.

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Definitions:

ATPs

ATPs are molecules known as adenosine triphosphate, which store and provide energy for many biochemical cellular processes through the release of a phosphate group.

Plasma Membrane

The lipid bilayer that surrounds a cell, controlling the movement of substances in and out of the cell.

Carbohydrates

Organic compounds consisting of carbon, hydrogen, and oxygen, usually in the ratio 1:2:1, serving as a major energy source for the body.

Actin

A protein that forms (together with myosin) the contractile filaments of muscle cells and is also involved in motion in other types of cells.