Close Examination of an Organ Reveals Two Middle Tissue Layers

question 9

Multiple Choice

Close examination of an organ reveals two middle tissue layers of organized cells. The layers seem to be running in circular and longitudinal directions. This tissue is probably

• A) epithelium.
• B) muscle.
• C) nervous.
• D) connective tissue.
• E) fat tissue.

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Definitions:

Salt Uptake

The process by which plants, animals, and other organisms absorb salt (sodium chloride) and other ions from their environment.

Adventitia

The outermost layer of the wall of a blood vessel or other tubular structure, consisting of connective tissue.

Cortex

The outer layer of an organ or structure, such as the cerebral cortex of the brain or the cortex of a plant root or stem.

Medulla

The innermost part of an organ or structure, such as the medulla oblongata in the brain which controls vital body functions.