Podcast
Questions and Answers
Which axis is a transverse axis passing through the center of the eye at the equator?
Which axis is a transverse axis passing through the center of the eye at the equator?
- X Axis (correct)
- Y Axis
- Z Axis
- None of the above
Which muscle is responsible for depression, excycloduction, and adduction from the primary position?
Which muscle is responsible for depression, excycloduction, and adduction from the primary position?
- Inferior Rectus (correct)
- Inferior Oblique
- Superior Rectus
- Medial Rectus
Which muscle is responsible for elevation, incycloduction, and adduction from the primary position?
Which muscle is responsible for elevation, incycloduction, and adduction from the primary position?
- Inferior Rectus
- Lateral Rectus
- Superior Oblique
- Superior Rectus (correct)
Which nerve innervates all the extraocular muscles except for the superior oblique and lateral rectus?
Which nerve innervates all the extraocular muscles except for the superior oblique and lateral rectus?
Which eye movement involves movement of the eye nasally?
Which eye movement involves movement of the eye nasally?
Study Notes
Eye Anatomy and Muscle Function
- The transverse axis runs horizontally through the eye at the equator, enabling rotational movements and stability.
Extraocular Muscles and Their Functions
- The inferior rectus muscle is responsible for depression, excycloduction (outward rotation), and adduction (movement toward the nose) from the primary position.
- The superior oblique muscle is responsible for elevation, incycloduction (inward rotation), and adduction from the primary position.
Innervation of Extraocular Muscles
- The oculomotor nerve innervates all extraocular muscles except the superior oblique (innervated by the trochlear nerve) and the lateral rectus (innervated by the abducens nerve).
Eye Movement
- Adduction refers to the movement of the eye nasally (toward the midline), allowing for coordinated binocular vision.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of motor anatomy and physiology of the eye with this quiz. Explore the key points, including the recti and oblique muscles, innervations, and the X and Y axes. Ideal for optometry students, medical students, and anyone interested in understanding eye movement.
