Unit II - Eye Muscle Actions Flashcards
Levator palpebrae superioris
Raises eyelid
Superior rectus
Directs eyeball upward
Medial rectus
Directs eyeball medially
Inferior rectus
Directs eyeball downward
Lateral rectus
Directs eyeball laterally
Inferior oblique
Directs eyeball superior and laterally
Superior oblique
Directs eyeball inferior and laterally
ciliaris
Changes shape of lens
Papillary constrictor (sphincter pupillae)
Constricts the pupil
Levator palpebrae superioris: innervation
Oculomotor (superior ramus)
Superior rectus: innervation
Oculomotor (superior ramus)
Medial rectus: innervation
Oculomotor (inferior ramus)
Inferior rectus: innveration
Oculomotor (inferior ramus)
Lateral rectus: innveration
Abducens
Inferior oblique: innervation
Oculomotor (inferior ramus)