Asked by Zuzana Zifcsakova on Sep 24, 2024
Verified
Which of the following is NOT true of the photopupillary reflex?
A) The response is controlled by the parasympathetic division of the autonomic nervous system.
B) It occurs when a person suddenly enters an area with brighter lighting conditions.
C) The response is a decrease in the size of the pupil.
D) It involves contraction of the circular muscles of the iris.
E) All of these are true of the photopupillary reflex.
Photopupillary Reflex
The reflex constriction of the pupils when the eyes are exposed to bright light.
Parasympathetic Division
A branch of the autonomic nervous system responsible for conserving energy and lowering the heart rate, among other functions, often referred to as the "rest and digest" system.
Autonomic Nervous System
The part of the nervous system that regulates involuntary bodily functions, including heart rate, digestion, and respiratory rate.
- Comprehend the physiological reactions of the eye when exposed to varying lighting environments.
Verified Answer
NY
Niveen Yaakoub4 days ago
Final Answer :
E
Explanation :
All the statements (A, B, C, D) correctly describe aspects of the photopupillary reflex, which is the reflexive adjustment of pupil size in response to changes in light intensity.
Learning Objectives
- Comprehend the physiological reactions of the eye when exposed to varying lighting environments.