Which of the following occur as an object is moved closer to the eyes?
A)Mydriasis and miosis
B)Accommodation and convergence
C)Muscarinic and alpha1 activation
D)Contraction of the levator palpebrae superioris and relaxation of the orbicularis oculi

Question

Quizplus · Accepted Answer

Accommodation is the process by which the lens of the eye changes its shape to focus on near objects. Convergence refers to the inward movement of both eyes towards each other to maintain focus on the object being viewed. Both of these occur as an object is moved closer to the eyes. Mydriasis (dilation of the pupils) and miosis (constriction of the pupils) are pupillary responses, which can occur due to changes in light intensity, medications, or neurological conditions. Muscarinic and alpha1 activation refer to different types of receptors, and their activation can cause various physiological responses such as constriction/dilation of blood vessels or bronchi. Contraction of the levator palpebrae superioris and relaxation of the orbicularis oculi are muscle movements that control eyelid position and are not directly related to object distance.

Which of the Following Occur as an Object Is Moved