Which of the following structures works like a camera shutter to adjust the amount of light entering the eye?

a. The sclera
b. The iris
c. The lens
d. The posterior chamber


Answer: b

Health Professions

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American reflexology can be traced to the early 1900s, and zone therapy was developed by a respected physician in Hartford, Connecticut, named:

A) Johann August Unzer B) Marshall Hall C) Sir Henry Head D) William Fitzgerald

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________ is bone brittleness due to a lack of calcium

A) Osteoporosis B) Paget's disease C) Osteomyelitis D) Bursitis

Health Professions

________ is a condition of decreasing bone density

A) Osteoporosis B) Osteomyelitis C) Osteosarcoma D) Osteitis

Health Professions

You are caring for a child who has been burned. Which of the following are TRUE regarding burn prevention?

A) Toddlers are unable to reach the stove so kitchen burns are not an issue. B) Children lack the manual dexterity to light matches or use a lighter. C) The older a child gets, the less likely he is to suffer a burn injury. D) Lowering the temperature of the hot water heater can prevent serious burns.

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