Exam 1: Unit II: Eye Movements Flashcards
What is the innervation and action of Levator palpebrae superioris?
Oculomotor N (superior ramus); raises eyelid
What is the innervation and action of Superior rectus?
Oculomotor N (superior ramus); directs eyeball upward
What is the innervation and action of Medial Rectus?
Oculomotor N (inferior ramus); directs eyeball medially
What is the innervation and action of Inferior Rectus?
Oculomotor N (inferior ramus); directs eyeball downward
What is the innervation and action of Lateral Rectus?
Abducens; directs eyeball laterally
What is the innervation and action of Inferior oblique?
Oculomotor N (inferior ramus); directs eyeball superior and laterally
What is the innervation and action of Superior oblique?
Trochlear N; directs eyeball inferior and laterally
What is the innervation and action of Ciliaris muscle?
Oculomotor via viliary ganglion; changes shape of the lens
What is the innervation and action of Pupillary constrictor?
Oculomotor via ciliary ganglion; constricts the pupil
In order to look up and to the right, what eye muscles are used?
Left eye– inferior oblique
Right eye– superior rectus
In order to look to the right, what eye muscles are used?
Left eye– medial rectus
Right eye– lateral rectus
In order to look down and to the right, what eye muscles are used?
Left eye– superior oblique
Right eye– inferior rectus
In order to look down and to the left, what eye muscles are used?
Left eye– inferior rectus
Right eye– superior oblique
In order to look to the left, what eye muscles are used?
Left eye– lateral rectus
Right eye– medial rectus
In order to look up and to the left, what eye muscles are used?
Left eye – superior rectus
Right eye– inferior oblique
