lecture 5 - head & neck 5 Flashcards
Which bones form the orbit?
lesser wing of sphenoid, frontal bone, ethmoid bone, maxilla, lacrimal bone, zygomatic bone
Where is the apex of the orbit?
At the optic canal
What is the anatomical term for eyelids?
Palpebrae
What covers the internal surface of the palpebrae?
Conjuctiva
How are tears drained from the eye to the nasal cavity?
collected by puncta, lacrimal canaliculi, lacrimal sac, nasolacrimal duct to nasal cavity
What are the fibrous tissue bands that strengthen the palpebrae?
Tarsal plates
How are the palpebrae joined to the lateral and medial margins of the orbit?
Via medial and lateral palpebral ligaments
What nerve gives parasympathetic supply to the lacrimal gland for secretion?
Greater petrosal nerve (CNVII), which runs with the lacrimal nerve
Which muscle elevates the upper eyelid?
Levator palpebrae superioris
Where is the common attachment of the rectus muscles?
The tendinous ring in the apex of the orbit
Which muscle passes through the trochlea before attaching to the eye?
Superior oblique
Which muscles allow for upwards movement of the eye?
superior rectus, inferior oblique
Which muscles allow for upwards and inwards movement of the eye?
superior rectus
Which muscles allow for upwards and outwards movement of the eye?
inferior oblique
Which muscles allow for downwards movement of the eye?
inferior rectus, superior oblique