When examining a patient's eyes, the nurse recalls that stimulation of the sympathetic branch of the autonomic nervous system:
a. Causes pupillary constriction.
b. Adjusts the eye for near vision.
c. Elevates the eyelid and dilates the pupil.
d. Causes contraction of the ciliary body.
ANS: C
Stimulation of the sympathetic branch of the autonomic nervous system dilates the pupil and elevates the eyelid. Parasympathetic nervous system stimulation causes the pupil to constrict. The muscle fibers of the iris contract the pupil in bright light to accommodate for near vision. The ciliary body controls the thickness of the lens.
You might also like to view...
A patient is being admitted to the Neuro ICU with suspected herpes simplex virus encephalitis. The nurse caring for this patient would expect what diagnostic test to be ordered to confirm the suspected diagnosis?
A) EEG B) EMG C) Ultrasound D) Blood cultures
The enzyme that begins digestion of protein in the stomach is
a. pepsin. b. renin. c. trypsin. d. protease.
Which data identified during the perioperative assessment alert the nurse that special protection techniques should be implemented during surgery?
a. Stated allergy to cats and dogs b. History of spinal and hip arthritis c. Verbalization of anxiety by the patient d. Having a sip of water 3 hours previously
A nurse demonstrates the leadership behavior of reflecting when:
a. Providing feedback on how behavior appears to others b. Introducing new topics to the group c. Verifying information through questions and restatement d. Highlighting important points from the discussion