Which component in the eye refracts light rays to be directed to the lens?
a. Pupil
b. Cornea
c. Retina
d. Ciliary body
B
The cornea bends or refracts the light rays onto the retina. The pupil acts to regulate the entrance of light into the eye. The ciliary body helps to change the shape of the eye for far and near vision. The retina is the inner coat of the eyeball and is found in the posterior portion of it. The retina contains several layers. The layer with rods and cones acts as the receptor for light images.
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Which of the following is the best developed task statement?
a. The client will walk up and down the hall. b. The client will monitor his blood sugar and take his insulin injection correctly. c. The client will walk up and down the hall three times a day by 24 hours from this day. d. The client will be able to regulate his blood sugar.
Based on the incidence of disease in woman, which assessment of lower extremities would be most important to make in a pregnant woman?
A) Lateral movement of the kneecap B) Presence of varicosities C) Diameter of the calf muscle D) Blanching and refilling of toenails
Based on this description, what is your most likely diagnosis?
A 19-year-old construction worker presents for evaluation of a rash. He notes that it started on his back with a multitude of spots and is also on his arms, chest, and neck. It itches a lot. He does sweat more than before because being outdoors is part of his job. On physical examination, you note dark tan patches with a reddish cast that has sharp borders and fine scales, scattered more prominently around the upper back, chest, neck, and upper arms as well as under the arms. A) Pityriasis rosea B) Tinea versicolor C) Psoriasis D) Atopic eczema
When teaching a patient about restorative rest, the nurse explains that
1. The sleep cycle is enhanced by medications for sleep. 2. The sleep cycle should be approximately 80% rapid eye movement (REM). 3. Non–rapid eye movement (NREM) sleep is the most restful cycle. 4. REM sleep consists of four stages.