In Order for Blood to Always Flow Unidirectionally Through a Closed

question 54

Multiple Choice

In order for blood to always flow unidirectionally through a closed circulatory system, the ________.

• A) blood vessels farthest from the heart must have valves
• B) capillaries must have a thick endothelium
• C) arteries must be elastic
• D) pressure in all vessels must be equal

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Definitions:

Electroencephalography

A non-invasive method that records electrical activity in the brain through electrodes placed on the scalp.

Computed Tomography

A diagnostic imaging technique that uses computer-processed X-rays to produce detailed cross-sectional images of the body.

Electroencephalography

A medical imaging technique that records electrical activity in the brain using electrodes placed on the scalp.

Computed Tomography

A medical imaging technique that uses computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional images of specific areas of a scanned object.