6. The stimulus for the pbotopupillary reflex is a. intraocular pressure b. osmo

Question

6. The stimulus for the pbotopupillary reflex is a. intraocular pressure b. osmolarity of the aqueous humor c. light d. acetylcholine from activation of the parasympathetic nerves e. norepinephrine from activation of the sympathetic nerves 7. The consensual light reflex a. Is also called the blink reflex b. Is also called the corneal reflex c. Is also called the photopupillary reflex d. occurs only with activation of the sympathetic nervous system e. Occurs only with muscatioic activation 8. Sympathetic nerve stimulation causes a. elevation of the eyelids b. convergence of the eyes c. pupillary size to decrease d. pinpoint pupils e. pupillary dilation 9. With which term is "pinpoint pupils" (opioid overdose) most associate a. sympathomimetic b. mydriasis c. lacrimation d. ptosis of the eyelid e. miosis 10. Mydriasis refers to a. paralysis of the muscles of accommodation b. pupillary dilation c. ptosis of the eyelid d. lid lag e. convergence of the eyes 11. Atropine, a muscarinic blocker or parasympatholytic, causes a. pupillary constriction b. excessive lacrimation c. lid lag d. mydriasis e, pinpoint pupils

Explanation / Answer

6) c light. Light shone into the eyes causes the photopupillary reflex. High intensity causes miosis or constriction of pupils and low intensity causes mydriasis or dialation

7)c it is another name for indirect photopupillary light reflex

8) e Sympathetic response causes the contraction of the radial muscle and subsequent dilation of the pupil.

9) e Pinpoint pupils occur due to constriction of the pupils and this is called miosis

10 b mydriasis is a term used for dialation of pupils.

11 d atropine has an anticholinergic action on the pupils and hence causes mydriasis

Related Questions

Navigate

• Browse (All)
• Browse 6
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.