Asked by Ariella Ruggiero on Apr 25, 2024
Verified
When examining a patient's eyes, what should the nurse be aware that stimulation of the sympathetic branch of the autonomic nervous system causes?
A) Pupillary constriction
B) Adjusts the eye for near vision
C) Causes contraction of the ciliary body
D) Elevates the eyelid and dilates the pupil
Sympathetic Branch
Part of the autonomic nervous system that activates the fight or flight response, responsible for increasing heart rate, blood pressure, and energy mobilization.
Autonomic Nervous System
The part of the nervous system that controls involuntary actions of the body, including heart rate, digestion, and respiratory rate.
Pupillary Constriction
The narrowing of the pupil of the eye due to the contraction of the iris muscles, typically in response to bright light or focusing on close objects.
- Describe the role of the autonomic nervous system in eye function, including pupillary response and accommodation.
Verified Answer
OP
owusu patrick7 days ago
Final Answer :
D
Explanation :
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. Parasympathetic nervous system stimulation, not sympathetic nervous system, causes the pupil to constrict. The muscle fibers of the iris contract the pupil in bright light to accommodate for near vision, not sympathetic nervous system stimulation.
Learning Objectives
- Describe the role of the autonomic nervous system in eye function, including pupillary response and accommodation.