All of the following ocular muscles are supplied by CN III EXCEPT:
Ans. (b) Superior obliqueRef: A.K. Khurana 6th ed. / 5-6, 337EXTRA-OCULAR MUSCLES# The extraocular muscles control the movement of the eye.# Levator Palpabrae Superioris (LPS): muscle which elevates the palpabrae upwards resulting in opening the eye.# When LPS gets tired, mullers muscle and frontalis muscle helps in elevation of eyelid.* Eyeball muscles (6):# 4 Recti muscles: superior (SR), inferior (IR), lateral (LR) and medial rectus (MR)]# 2 Oblique muscles: superior oblique and inferior oblique* The muscles supplied by the occulomotor nerve (CN III) are: superior, inferior and medial rectus and inferior oblique, sphincter papillae and ciliary muscle.* Lateral rectus is supplied by abducens (VI)* Trochlear nerve (CN IV) supplies superior oblique muscle.* Mnemonic: LR6, S04, 03; which means lateral rectus is supplied by sixth nerve, superior oblique by fourth nerve and all other by EOM by third cranial nerve.
Superior rectus
Superior oblique
Inferior rectus
Medial rectus
Ocular Motility