Bonus Quizzie Flashcards
(29 cards)
What opening(s) are located along the superior wall of the orbit?
optic canal
What are the contents of the optic canal?
optic nerve and opthalmic artery
What is the name given to the medial wall of the orbit?
lamina papyracea
What features may be observed on the medial wall of the orbit?
lacrimal groove, fossa for the lacrimal sac, anterior ethmoid foramen, and posterior ethmoid foramen
What opening(s) are located along the lateral wall of the orbit?
superior orbital fissure
What are the contents of the superior orbital fissure?
oculomotor, trochlear, and abducent/abducens cranial nerves opthalmic division of the trigeminal cranial nerve & opthalmic veins
What openings(s) are located along the inferior wall of the orbit?
inferior orbital fissure
What is contained in the inferior orbital fissure?
maxillary division of trigeminal nerve
What is the name given to the angle formed between the superior and inferior eyelids at the medial and lateral margins?
canthus
What is the name given to the union of the skin at the eyelid margins?
medial palpebral commisure or lateral palpebral commisure
What is the name given to the elevation at the medial canthus?
lacrimal caruncle
What is the crescent-shaped appearance of the conjunctiva at the medial canthus?
plica semilunaris conjunctiva
What is the name given to the elevation at the medial margin of the eyelid?
superior lacrimal papilla or inferior lacrimal papilla
What is the name given to the opening at the lacrimal papilla?
lacrimal punctum
What is the apparent function of the medial rectus extraocular muscle?
pulls the cornea inward/medially; it adducts the cornea
What is the apparent function of the lateral rectus extraocular muscle?
pulls the cornea outward/laterally; it abducts the cornea
What is the apparent function of the superior rectus extraocular muscle?
pulls the cornea upward/superiorlyand at the same time rotates the cornea inward; elevation and adduction of the cornea; conjunct movement of intorsion
What is the apparent function of the inferior rectus extraocular muscle?
pulls the cornea downward/inferiorly and at the same time rotates the cornea inward; depression and adduction of the cornea; conjunct movement of extorsion
What is the apparent function of the superior oblique extraocular muscle?
pulls the back of the eyeball upward and inward which causes the cornea to rotate downward and outward; depression and abduction of the cornea; conjunct movement of intorsion
What is the apparent function of the inferior oblique extraocular muscle?
pulls the back of the eyeball downward and inward which causes the cornea to rotate upward and outward; elevation and abduction of the cornea; conjunct movement of extorsion
What muscles act to depress the mandible or open the mouth?
lateral pterygoid along with the suprahyoid and infrahyoid muscles
What muscles act to elevate the mandible or close the mouth?
temporalis, masseter, and medial pterygoid
What muscles act to protract the mandible or protrude the chin?
masseter, medial pterygoid, and lateral pterygoid
What muscles act to retract the mandible or pull the chin back?
temporalis
