**Question:** The eye doctor uses an **Acetylcholine-receptor blocker** to maximally dilate the pupils; this allows the doctor to peer deep into the posterior **eye-ball** and observe the retina. Considering these facts, which nervous system is usually controlling the pupil diameter? (Which nervous system is “**Acetylcholinergic**”?)**Options:**a. Somatosensory nervous system b. Sympathetic nervous system c. Reticular attenuating nervous system d. Parasympathetic nervous system **Explanation:**The text presents a multiple-choice question focused on the physiological control of pupil diameter, centering on the function of acetylcholine and its receptor blockers. The context is set in an eye examination where pupil dilation is necessary for retinal observation. The question aims to identify which part of the nervous system—under what is termed "acetylcholinergic" control—is generally responsible for this function, highlighting the role of the parasympathetic nervous system.

Autonomic nervous system has two divisions - sympathetic and para sympathetic nervous system.…

The eye doctor uses an Acetylcholine-receptor blocker to maximally dilate the pupils; this allows the doctor to peer deep into the posterior eye-ball and observe the retina. Considering these facts, which nervous system is usually controlling the pupil diameter? (Which nervous system is "Acetylcholinergic"?) a. Somatosensory nervous system b. Sympathetic nervous system c. Reticular attenuating nervous system d. Parasympathetic nervous system

The eye doctor uses an Acetylcholine-receptor blocker to maximally dilate the pupils; this allows the doctor to peer deep into the posterior eye-ball and observe the retina. Considering these facts, which nervous system is usually controlling the pupil diameter? (Which nervous system is "Acetylcholinergic"?) a. Somatosensory nervous system b. Sympathetic nervous system c. Reticular attenuating nervous system d. Parasympathetic nervous system

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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