A nurse conducting a session on eye care needs to educate clients about the aqueous humor and vitreous humor. Which is the function of the aqueous humor?
A) Regulates the amount of light that enters the eye
B) Gives the eye its specific color
C) Provides nutrients and oxygen to the cornea
D) Focuses the light rays on the retina
C
Feedback:
The aqueous humor, which flows through the anterior and posterior chambers of the eye in the space between the cornea and the lens, maintains the intraocular pressure and provides nutrients and oxygen to the avascular lens and cornea. The pupil regulates the amount of light that enters the eye, whereas the aqueous humor does not regulate the amount of light that enters the eye, does not give the eye its specific color, nor does it focus the light rays on the retina.
You might also like to view...
Which of the following is a priority nursing diagnosis for a patient with COPD?
A) Ineffective breathing patterns related to ineffective respiratory mechanisms of the chest wall B) Self-care deficit related to activity intolerance C) Altered sleeping pattern related to insufficient ventilation D) Ineffective individual coping related to decreased socialization
The nurse is concerned that a client admitted for a total hip replacement is at risk for thrombus formation. Which assessment finding supports the nurse's concern?
A) Body mass index (BMI) 35.8 B) Former cigarette smoker C) Blood pressure 132/88 mmHg D) Age 45 years
A woman with a known heroin habit is admitted in early labor. Which drug is contrain-dicated with opiate-dependent patients?
a. Diphenhydramine (Benadryl) b. Hydroxyzine (Vistaril) c. Promethazine (Phenergan) d. Nalbuphine (Nubain)
The nurse is providing care to manage the pain of a patient with burns. The physician has ordered opiates to be given intramuscularly. The nurse contacts the physician to change the order to intravenous administration because:
a. intramuscular injections cause additional skin disruption. b. burn pain is so severe it requires relief by the fastest route available. c. hypermetabolism limits effectiveness of medications administered intramuscularly. d. tissue edema may interfere with drug absorption of injectable routes.