When exposed to sunlight, the skin produces a molecule that is converted to ________, which the body needs for calcium absorption.
Fill in the blank(s) with the appropriate word(s).
vitamin D
In the presence of sunlight, the skin manufactures vitamin D, which is needed for calcium absorption.
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Which of the following ambulatory assistive devices provides the GREATEST stability?
a. Cane b. Walker c. Forearm crutches d. Axillary crutches
A kerosene storage tank is 85 feet high. If the tank is full and the fuel has a specific gravity of 0.76, what pressure will exist at the base of the tank?
A. 28 psi B. 37 psi C. 65 psi D. 78 psi
A group of signs and symptoms occurring together to present a particular disease or ab-normality is called a(n):
a. Etiology b. Complication c. Syndrome d. Risk factor
Which of the following organs or structures does NOT reside within the mediastinum?
A. lungs B. trachea C. vena cavae D. esophagus