Aquatic Organisms Generally Require Less Structural Support (E

question 7

Multiple Choice

Aquatic organisms generally require less structural support (e.g.,skeletons) due to water's high

• A)specific heat.
• B)buoyancy.
• C)surface tension.
• D)viscosity.

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Definitions:

Tunica Media

The middle layer of the walls of arteries and veins, composed mostly of smooth muscle and elastic fibers, playing a key role in regulating blood pressure and flow.

Valves

Structures in the heart and veins that maintain blood flow in a single direction, preventing backflow.

Pulmonary Capillaries

Pulmonary capillaries are the tiny blood vessels located in the lungs that surround the air sacs (alveoli), where the exchange of oxygen and carbon dioxide takes place between the bloodstream and the lungs.

Systemic Capillaries

The smallest blood vessels in the body's systemic circulation, where the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and the tissues occurs.