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43 Cards in this Set

  • Front
  • Back
What is the pneumonic for the roof or the orbit?
lazy friends make perfect zooalogical examples
Roof of orbit?
Frontal and lesser wing of sphenoid
Floor of orbit?
Maxilla, zygomatic, palatine
Lateral orbit?
Zygomatic, greater wing of sphenoid
Medial orbit?
Lacrimal, ethmoid, frontal, body of sphenoid
What foramen make up the perifery of the orbit?
Supraorbital and infraorbital foramen.
What are the intraorbital openings into the orbital cavity?
I SO ZEN
Inferior orbital fissure
superior orbital fissure
zygomatico-orbital foramen
Etmoidal foramina
Nasolacrimal canal
CN IV innervates what extrinsic eye ms?
Superior rectus
What Innervates the Lateral rectus ms?
CN VI
What extrinsic eye mussles are innervated by CN III?
Sevator palpebrae superiorus, sup rectus, inf rectus, medial rectus and inferior oblique
What ms. originates at the lesser wing of sphenoid?
Levator palpebrae superiorus
Where do all Rectus ms. originate?
Common tendonous ring in post orbit.
What is the insertion of the levator palpebrae superiorus?
Eyelid
Origin of sup oblique
body of sphenoid
Only extrinsic ms that does not originate from posterior part of orbit?
Inferior oblique. It originates in the ant/med part of orbit
all extrinsic ms. insert into the sclera of eyeball except_______.
Levator palpebrae superiorus
The superior orbital fissur transmits all 3 cranial nerves to extrinsic eye ms. 2 pass through the common tendonous ring. what are they?
CNIII (sup and inf branches) and CN VI
What nerve passes through tendonous ring but does not innervate extrinsic eye ms?
Nasocilary branch of VI
Draw superior orbital fissure and Tendonous ring.
Good girl
The superior branch of the CNIII innervates what?
Levator palpebrae superiorus and superior rectus ms.
The inferior branch of the occulomotor nerve innervates what?
Medial rectus, inferior rectus, inferior oblique and gives a branch to ciliary ganglion
what ms closes pupil?
Sphincter pupillae(parasympathetic)
what ms dilates pupil?
Dilator pupillae(sympathetic)
What do ciliary ms do?
Adjust lense. Parasympathetic
Short ciliary nerves
parasympathetic postganglionic to dialator pupillae and ciliary ms's.
Sympathetic innervation of intrinsic eye ms's?
From T1-T2 sup cervical ganglion(lat horns). Long ciliary nerves (post ganglionic) going to dilator pupillae.
Where do the preganglionic fibers going to ciliary ganglion originate from?
Edinger westphal nucleus traveling with CNVIII
Where is cilary ganglion found?
Behind eyeball, between optic nerve and lat rectus ms
Where do the cell bodies for the rubro spinal tract originate?
Red Nucleus
Lacrimal nerve
Sensory and secretomotor to lacrimal gland, lateral part of uppereyelid and conjunctiva
Frontal Nerve
Has supraorbital and supertrochlear branches and innervates the uppereyelid, scalp to vertex and frontal sinus
What ms goes through the trochlea?
Superior oblique
Nasocillary nerve
Nasociliary nerve, long ciliary nerve, infratrochlear nerve and ethmoidal nerves. Innervate cornea, medial eyelids, root of nose, ethmoidal and sphenoidal sinus
Optic nerve
Special somatic afferents(SSA)-Vision,hearing, and balance
What are the arterys to the orbit capen said to know?
Supraorbital, supratrochlear, Dorsal nasal artery, and centeral artery of retina
Which artery surrounds the optic nerve?
Central artery of retina
Drainage of orbit
Superior and inferior opthalmic veins. they ultimatly drain into cavernous sinus
What is the orbital venus drainage in direct communication with?
The cranial vault (fossa)
The angular vein joins what vein?
facial vein
What syndrome is caused by damage to cervical sympathetic trunk?
Horners syndrome
Signs of horners syndrome
Droopy eyelid, paralysis of LPS, constriction of pupil, warm skin on face, and vasodilation of blood vessels of skin.
What syndrome is cause by damage to midbrain and CNIII
Webers syndrome
Signs of webers syndrome
Ipsilateral paralysis of eye and contralateral hemiplegia(paralysis od muscles on opposite side of body)