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Study sets matching "orbit and eye"

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Study sets matching "orbit and eye"

47 terms
The Orbit and Eye
ORBITAL CAVITY... Base/Apex... Roof... Lateral…
Eyelid Components (4 incl. 2 muscles)
Tarsal Plates: Feature, function, Atta…
Levator Palpebrae Superioris: Attachme…
Sphenoid: Optic foramen, Superior orbital fissure... ORBITAL PRO…
Orbicularis Oculi Muscle... Tarsal Plates... Conjunctiva... Levator Pa…
Fibrous, Stiffen Lids ... Attachments:... 1.Orbital septum (palpebr…
Tarsal plate... Voluntary fibres <- Oculomotor III... Involuntary f…
ORBITAL CAVITY... Base/Apex... Roof... Lateral…
Sphenoid: Optic foramen, Superior orbital fissure... ORBITAL PRO…
Eyelid Components (4 incl. 2 muscles)
Orbicularis Oculi Muscle... Tarsal Plates... Conjunctiva... Levator Pa…
27 terms
Eye and orbit
Blowout fracture of orbit
Supraorbital margin
Infra-orbital margin
Bones of the orbit
Because of the thinness of the medial (lacrimal and ethmoid)…
component of the frontal bone, the angular boundary between t…
The lower edge of the orbital opening, formed by zygomatic &…
Roof: frontal, lesser wing of the sphenoid at the posterior a…
Blowout fracture of orbit
Because of the thinness of the medial (lacrimal and ethmoid)…
Supraorbital margin
component of the frontal bone, the angular boundary between t…
58 terms
Orbit and Eye
palpebral conjunctivum
bulbar conjunctivum
tarsal plates
orbicularis oculi
covers the internal eyelids
thin layer of tissue over the bulb of the eye that is continu…
dense fibroelastic tissue "skeleton" of the eyelids, maintain…
muscular portion of the eyelids that responds to the blink re…
palpebral conjunctivum
covers the internal eyelids
bulbar conjunctivum
thin layer of tissue over the bulb of the eye that is continu…
23 terms
Orbit and Eye
ethmoid bone
cribriform plate
sphenoid bone
anterior clinoid process
ethmoid bone
cribriform plate
28 terms
Orbit and Eye
Osteology of Eye
External Features
Eye
Blood supply, venous drainage and inne…
1. Comprised of seven bones... a. Frontal... b. Ethmoid... c. Lacri…
A. Eyelids (palpebrae)... 1. Conjunctiva, palpebral portion... 2.…
1. conjunctiva: oily portion... 2. sclera: whitish portion w/ v…
1. Blood supply... a. Branches of ophthalmic artery... b. Supraor…
Osteology of Eye
1. Comprised of seven bones... a. Frontal... b. Ethmoid... c. Lacri…
External Features
A. Eyelids (palpebrae)... 1. Conjunctiva, palpebral portion... 2.…
49 terms
eye, orbit, and orbital Adnexa
eyelid structures
eyelid elevators
levatator palprebrae superioris
superior tarsal muscle
skin... conjuctiva (specialized epithelium on external eyelid)... g…
levator palperae superioris ... superior tarsal muscle
most superior muscle in orbit (skeletal muscle)... innervated b…
underneath levator palprebrae superioris and attached to tars…
eyelid structures
skin... conjuctiva (specialized epithelium on external eyelid)... g…
eyelid elevators
levator palperae superioris ... superior tarsal muscle
63 terms
Orbit and eye
Anterior ethmoid foramen
Anterior lacrimal crest
Ethmoid
Eyelashes (cilia)
Anterior ethmoid foramen
Anterior lacrimal crest
107 terms
Eye and Orbit
Session Learning Objectives
Session Learning Objectives
The eye is composed of three layers. W…
The fibrous layer is comprised of?
Describe the structure and function of the eye including laye…
Describe the eyelids, conjunctiva and lacrimal apparatus. Exp…
Composed of three layers from superficial to deep:... 1) fibrou…
-Sclera... -Cornea
Session Learning Objectives
Describe the structure and function of the eye including laye…
Session Learning Objectives
Describe the eyelids, conjunctiva and lacrimal apparatus. Exp…
57 terms
Eye and Orbit
last, sunken eye
outpocketing, Optic, meninges, optic cup
lens placode, Lens vesicle, Presumptiv…
Sclera, Dura mater, Cornea
Orbital fat = ________ fat store lost... Leads to a "_______" a…
Development of the Eye... Optic Vesicle and Stalk ... Eye develop…
Lens Formation... Simultaneous thickening of epidermis forms __…
THREE Concentric Layers of the Eye... External layer... 1. _______…
last, sunken eye
Orbital fat = ________ fat store lost... Leads to a "_______" a…
outpocketing, Optic, meninges, optic cup
Development of the Eye... Optic Vesicle and Stalk ... Eye develop…
30 terms
Eye and Orbit
External anatomy of eye
Eyelids
The corneal reflex
Eyelids more
-Covered by thin skin... -covered internally by palpebral conjun…
-Important reflex that protects the eye... =Stimulus to cornea c…
-Levator palpebrae superioris muscle elevates upper lid... =Inne…
External anatomy of eye
Eyelids
-Covered by thin skin... -covered internally by palpebral conjun…
98 terms
Le Orbit and Eye
What bones form the orbit?
What does the optic canal transmit?
What forms the roof? (superior wall)
What forms the lateral wall?
The frontal, sphenoid, zygomatic, maxilla, palatine, ethmoid,…
Ophthalmic artery and Optic Nerve (CN II)
Orbital plate of the frontal bone and lesser win of the sphen…
Zygomatic bone, greater wing of the sphenoid bone, and fronta…
What bones form the orbit?
The frontal, sphenoid, zygomatic, maxilla, palatine, ethmoid,…
What does the optic canal transmit?
Ophthalmic artery and Optic Nerve (CN II)
90 terms
The Eye and Orbit
Where are ethmoidal foramina located i…
What is the anatomical name of the eye…
How many extraocular muscles are there…
Which gland is present in the orbit?
Just superior to the Ethmoid bone in the frontal bone
Bulbous Oculi
7
Lacrimal gland
Where are ethmoidal foramina located i…
Just superior to the Ethmoid bone in the frontal bone
What is the anatomical name of the eye…
Bulbous Oculi
34 terms
Orbit and Eye
Walls of the Orbit
Major Orbital Openings
Structures transmitted by the Optic ca…
Structures transmitted by the Superior…
1. Optic Canal ... 2. Superior Orbital Fissure... 3. Inferior Orbit…
1. Optic nerve (II)... 2. Ophthalmic artery
1. Trigeminal CN (V1)... 2. Oculomotor nerve (III)... 3. Trochlear…
Walls of the Orbit
Major Orbital Openings
1. Optic Canal ... 2. Superior Orbital Fissure... 3. Inferior Orbit…
38 terms
Eye and the Orbit
Label the bones of the orbit
What are the three sinuses surrounding…
What is the suspensory ligament?
Which muscle is found in the suspensor…
Frontal, Ethmoid and maxillary sinuses
Inferior rectus
Label the bones of the orbit
What are the three sinuses surrounding…
Frontal, Ethmoid and maxillary sinuses
91 terms
Orbit and eye
what are the functions of the orbit?
what are the margins of the orbit?
what forms the roof of the orbit?
what forms the lateral wall of the orb…
provide protective casing of eyeball, nerves, muscles and ves…
supraorbital: frontal bone... lateral: zygomatic process of fron…
frontal bone of orbital plate... lesser wing of sphenoid... relati…
zygomatic, sphenoid, frontal ... relations: temporal fossa, mid…
what are the functions of the orbit?
provide protective casing of eyeball, nerves, muscles and ves…
what are the margins of the orbit?
supraorbital: frontal bone... lateral: zygomatic process of fron…
20 terms
Eyes/Orbit
Optic Canal
Superior Orbital Fissure
Inferior Orbital Fissue
Flow of tears from Lacrimal Gland
Cranial Nerve 2 (optic)
Cranial Nerves 3(occulomotor), 4(trochlear), 6(abducens), and…
Cranial Nerve 5V2 (Maxillary)
Lacrimal glands produce tears... Tears enter eye in upper orbit…
Optic Canal
Cranial Nerve 2 (optic)
Superior Orbital Fissure
Cranial Nerves 3(occulomotor), 4(trochlear), 6(abducens), and…
75 terms
The Orbit and Eye
Describe the bony landmarks of the orbit
What are the attachments of the fibrou…
Where is conjunctiva found?
How are conjunctival fornices formed?
- Superior orbital fissure and optic foramen within sphenoid…
- Inferior tarsus attached to the lower orbital margin ... - Sup…
- Lines the deep surface of the eyelids and exposed surface o…
Where the palpebral parts of the conjunctiva are reflected on…
Describe the bony landmarks of the orbit
- Superior orbital fissure and optic foramen within sphenoid…
What are the attachments of the fibrou…
- Inferior tarsus attached to the lower orbital margin ... - Sup…
88 terms
Orbit and Eye
Orbital Cavity
Orbit
Lacrimal Bone
Orbital plate of ethmoidal lamina
Orbit... Lacrimal bone... Orbital plate of ethmoid lamina (lamina p…
quadrangular pyramid, with base anteriorly, apex posteriorly,…
contribute to medial wall. Contains fossa for lacrimal sac
posterior to the lacrimal bone, very thin bone. Contribute to…
Orbital Cavity
Orbit... Lacrimal bone... Orbital plate of ethmoid lamina (lamina p…
Orbit
quadrangular pyramid, with base anteriorly, apex posteriorly,…
104 terms
Eye and Orbit
Three Layers of the Eye
Sclera
Cornea
Choroid
From superficial to deep: ... 1. Fibrous Layer: Sclera and Corne…
tough white tunic responsible for maintaining shape of the ey…
anterior transparent part of the outer fibrous layer of the e…
Pigmented layer that is highly vascularized. Covers posterior…
Three Layers of the Eye
From superficial to deep: ... 1. Fibrous Layer: Sclera and Corne…
Sclera
tough white tunic responsible for maintaining shape of the ey…
87 terms
Eye & Orbit
when approaching the eye anteriorly, w…
deep to the orbicularis oculi is the _…
the orbital septum blends into the ___…
tarsal glands
orbicularis oculi
orbital septum... -extension of the periosteum of the orbit
superior tarsus... inferior tarsus
located within the tarsal plate... -secretes oily liquid that ke…
when approaching the eye anteriorly, w…
orbicularis oculi
deep to the orbicularis oculi is the _…
orbital septum... -extension of the periosteum of the orbit
34 terms
Eye Orbit
Contents of the Orbit ... • Eyeball ... • Op…
The branch of V2 which becomes the Inf…
Optic Nerve ... - Special sensory -‐ visi…
• Ophthalmic nerve., V1
• Ocular muscles (6 + 1) ... • Lacrimal gland ... • Lacrimal duct &…
the floor of the orbit in the ... infraorbital groove and canal t…
- Surrounded by extensions of the cranial meninges: dura, ara…
- General sensory to contents of orbit ... - Enters orbit throug…
Contents of the Orbit ... • Eyeball ... • Op…
• Ocular muscles (6 + 1) ... • Lacrimal gland ... • Lacrimal duct &…
The branch of V2 which becomes the Inf…
the floor of the orbit in the ... infraorbital groove and canal t…
40 terms
Orbit and Eye
What bones make up the roof, lateral w…
The orbital plate of the maxilla separ…
What shape does the orbit have?
The superficial surface of the eyelids…
Roof - orbital plate of the frontal bone... Lateral wall - zygom…
Maxillary sinus
Pyramidal
Skin; conjunctiva (mucous membrane)
What bones make up the roof, lateral w…
Roof - orbital plate of the frontal bone... Lateral wall - zygom…
The orbital plate of the maxilla separ…
Maxillary sinus
12 terms
Eye in Orbit
Palpebrae
Palpebral Fissure
Lateral Canthus
Medial Canthus with Caruncle
Palpebrae
Palpebral Fissure
25 terms
Eye and Orbit
Bony orbit
The roof
The medial wall
The floor
The orbit approximates a four-sided pyramid.... The apex is the…
The roof is made up of the orbital plate of the frontal bone…
The medial wall is made up of parts of the ethmoid, frontal,…
The floor is made up of parts of the maxilla, zygomatic and p…
Bony orbit
The orbit approximates a four-sided pyramid.... The apex is the…
The roof
The roof is made up of the orbital plate of the frontal bone…
117 terms
The Orbit & Eye
Apex of the bony orbit
Base of bony orbit
Bones of the orbit
Bony Features of the Orbit
optic foramen
orbital rim
frontal... maxillary ... zygomatic... sphenoid... ethmoid... lamina papyrace…
Superior orbital fissure... Inferior orbital fissure... Optic canal…
Apex of the bony orbit
optic foramen
Base of bony orbit
orbital rim
19 terms
eye & orbit
foramina of orbit
walls of orbit most vulnerable in blow…
lig supporting eyeball
tarsal glands
-inf orbital fissure... -sup orbital fissure... -optic canal... -ethmo…
inf & med (thinnest)
suspensory lig (inf rectus embedded in it)
secrete meibum, oily part of tears
foramina of orbit
-inf orbital fissure... -sup orbital fissure... -optic canal... -ethmo…
walls of orbit most vulnerable in blow…
inf & med (thinnest)
84 terms
Eye/Orbit
Canthus
What structure of the orbit is superio…
Lacrimal apparatus
Pre-ganglionic neuron of lacrimal glan…
junction of upper and lower palpabrae
lacrimal gland
-lacrimal glands... -puncta... -canaliculi... -lacrimal sac... -nasolacri…
-superior salivatory nucleus ... -greater petrosal n. of VII... -jo…
Canthus
junction of upper and lower palpabrae
What structure of the orbit is superio…
lacrimal gland
48 terms
Orbit/Eye
Levator Palpabrae Superioris
Ptosis in horners sydrome
Innervation rules
Superior oblique
from orbit roof and attaches to upper eyelid... CN III... complete…
superior tarsal affected
SO4- superior oblique CN IV... LR6- lateral rectus CN VI... all res…
down and out
Levator Palpabrae Superioris
from orbit roof and attaches to upper eyelid... CN III... complete…
Ptosis in horners sydrome
superior tarsal affected
11 terms
EYE ORBIT
optic canal
superior orbital fissure
inferior orbital fissure
infraorbital groove
optic canal
superior orbital fissure
43 terms
Eye & Orbit
The eye socket
This is a cavity in the facial skeleto…
What shape is the orbit?
In which direction is the base and ape…
Orbit
Orbit
Pyramid shaped
Base of pyramid (the opening) - directed anteriorly and later…
The eye socket
Orbit
This is a cavity in the facial skeleto…
Orbit
117 terms
The Orbit & Eye
Apex of the bony orbit
Base of bony orbit
Bones of the orbit
Bony Features of the Orbit
optic foramen
orbital rim
frontal... maxillary ... zygomatic... sphenoid... ethmoid... lamina papyrace…
Superior orbital fissure... Inferior orbital fissure... Optic canal…
Apex of the bony orbit
optic foramen
Base of bony orbit
orbital rim
19 terms
Eye Orbit and Orbital Adnexa
Eyelids
Eyelid Elevators
Tears
Drainage system
A. Skin... B. Conjunctiva... C. Grayline... D. Conjunctival sac... E. Orb…
A. Levator palpebrae superioris... 1. Most superior muscle in or…
A. Basic tears... 1. From minor tarsal glands... 2. under the conju…
1. Superior puncta... 2. Inferior puncta... 3. Canaliculi... 4. Nasola…
Eyelids
A. Skin... B. Conjunctiva... C. Grayline... D. Conjunctival sac... E. Orb…
Eyelid Elevators
A. Levator palpebrae superioris... 1. Most superior muscle in or…
35 terms
Eye, Orbit, and Orbital Adnexa
Eyelids
Eyelid Elevators
Levator Palpebrae Superioris
Superior Tarsal Muscle
1. Skin... 2. Conjunctiva... 3. Grayline... 4. Conjunctival sac... 5. Orb…
1. Levator palpebrae superioris... 2. Superior tarsal muscle
Most superior muscle in orbit... Innervated by CN III (superior…
Underneath levator palpebrae superioris... Attached to tarsal pl…
Eyelids
1. Skin... 2. Conjunctiva... 3. Grayline... 4. Conjunctival sac... 5. Orb…
Eyelid Elevators
1. Levator palpebrae superioris... 2. Superior tarsal muscle
Eye and orbit
medial and lateral commisure of lid
lacrimal caruncle
plica semilunaris
orbital septum
where the eyelids meet
lump of flesh where tears pool
fold in the eye that flattens out when the eye moves laterally
extension of the periosteum of the skull that goes into the e…
medial and lateral commisure of lid
where the eyelids meet
lacrimal caruncle
lump of flesh where tears pool
50 terms
Orbit and Eye
Orbital plate of the frontal bone
Zygomatic bone and the greater wing of…
Orbital plate of the maxilla, which se…
Frontal process of the maxilla, lacrim…
What is the roof of the orbit?
What is the lateral wall of the orbit?
What is the floor of the orbit?
What is the medial wall of the orbit?
Orbital plate of the frontal bone
What is the roof of the orbit?
Zygomatic bone and the greater wing of…
What is the lateral wall of the orbit?
36 terms
Orbit and eyes
Orbital margins
Bones of the orbit
Sclera
Cornea
Supraorbital margin (1)... - formed by frotnal bone... * note s…
Roof... - frontal bones, lesser wing of sphenoid... Floor... - ma…
- forms 5/6th of the eyeball... - maintains shape of globe, off…
- anterior 1/6 of eye... - principal refracting component of eye…
Orbital margins
Supraorbital margin (1)... - formed by frotnal bone... * note s…
Bones of the orbit
Roof... - frontal bones, lesser wing of sphenoid... Floor... - ma…
12 terms
Orbit and Eye
Orbit and Eye Intro
Orbit
Orbital Borders
Orbital Features
- Connected to CNS by optic nerve... - Dependant on CN III, IV,…
- Pyramidal... - Apex is at junction of superior and inferior or…
Upper - frontal bone... Medial - formed from the frontal bone, f…
Roof - part of the frontal bones orbital plate... Floor - made u…
Orbit and Eye Intro
- Connected to CNS by optic nerve... - Dependant on CN III, IV,…
Orbit
- Pyramidal... - Apex is at junction of superior and inferior or…
64 terms
Orbit and eye
Lamina Papyracea
Capsule of Tenon
Blow-out fractures
Fibrous layer
Maxilla and ethmoid bone in the orbit make up this region of…
fascia that allows for movement of the eyeball in the orbit
fractures of the orbit that occur due to transfer of pressure…
tough, outermost layer of the eyeball that provides shape and…
Lamina Papyracea
Maxilla and ethmoid bone in the orbit make up this region of…
Capsule of Tenon
fascia that allows for movement of the eyeball in the orbit
119 terms
eye and orbit
white portion of eye
cornea
this provides about 2/3 of the focusin…
the sclera is covered by
sclera... -dense connective tissue continuous with the dura mate…
clear extension of the sclera which covers both the iris and…
cornea
a thin, moist mucous membrane: bulbar conjunctiva
white portion of eye
sclera... -dense connective tissue continuous with the dura mate…
cornea
clear extension of the sclera which covers both the iris and…
68 terms
Orbit and Eye
What forms eyelid
what glands lubricate the edge of eyel…
function and innervation of... levator pa…
Loss of corneal or blink reflex causes
Palpebral conjuctivum forms internal part, tarsal plates form…
tarsal or meibomian that secrete oil to prevent evaporation o…
lifts lid, oculomotor n... smooth muscle aka superior tarsal m t…
damage and ulceration to cornea because tear film is not bein…
What forms eyelid
Palpebral conjuctivum forms internal part, tarsal plates form…
what glands lubricate the edge of eyel…
tarsal or meibomian that secrete oil to prevent evaporation o…
56 terms
Orbit and eye
Contents of the orbit
Bony orbit
Roof of bony orbit
Floor of bony orbit
Eyeball (globe) ~20%... Fat ~50-60% ... Associated structures
Pear shaped ... Greatest diameter behind rim ... Apex is posterior
Frontal bone... Some lesser wing sphenoid
Maxilla... Some zygomatic, some palatine
Contents of the orbit
Eyeball (globe) ~20%... Fat ~50-60% ... Associated structures
Bony orbit
Pear shaped ... Greatest diameter behind rim ... Apex is posterior
33 terms
Orbit and Eye
Bones of the orbit
orbital blow out fracture
orbital septum
Conjunctiva
Margin: frontal, zygomatic, maxilla ... Apex: sphenoid... Medial: e…
- Usually occurs medially and inferiorly involving maxillary…
- CT that lines the margin of the orbit ... - superior and infer…
Innermost layer of the eyelids and outermost layer of the eye…
Bones of the orbit
Margin: frontal, zygomatic, maxilla ... Apex: sphenoid... Medial: e…
orbital blow out fracture
- Usually occurs medially and inferiorly involving maxillary…
79 terms
Eye and orbit
Superficial to deep muscles of the eye
Tarsal glands secrete what?
What is a blockage of tarsal glands ca…
ciliary glands secrete an oily substan…
orbicularis oculi>orbital septum>superior tarsus>inferior tar…
Oily liquid that helps keep tears in contact with your cornea
chalazion
eyelashes
Superficial to deep muscles of the eye
orbicularis oculi>orbital septum>superior tarsus>inferior tar…
Tarsal glands secrete what?
Oily liquid that helps keep tears in contact with your cornea
92 terms
The Orbit and Eye
Roof of orbit
Lateral side of orbit
Floor of orbit
Medial wall of orbit
Orbital process of frontal bone
Zygomatic bone
Maxilla
Small lacrimal bone and ethmoid
Roof of orbit
Orbital process of frontal bone
Lateral side of orbit
Zygomatic bone
52 terms
Eye and Orbit
Three layers of the eye from superfici…
Sclera
Cornea
Choroid
1. fibrous layer (sclera and cornea)... 2. vascular layer (chor…
tough, white tunic that maintains eye's shape; continuous wit…
anterior transparent part of outer layer
pigmented layer that is highly vascularized; light scattering…
Three layers of the eye from superfici…
1. fibrous layer (sclera and cornea)... 2. vascular layer (chor…
Sclera
tough, white tunic that maintains eye's shape; continuous wit…
16 terms
The orbit and eye
Lacrimal gland
What is ptosis?
Choroid
Optic disc
in superolateral portion of orbit; secretes tears; drained th…
drooping of the eyelid; third nerve palsy
a dark reddish-brown layer between the sclera and retina; in…
where the sensory fibers and vessels conveyed by the optic ne…
Lacrimal gland
in superolateral portion of orbit; secretes tears; drained th…
What is ptosis?
drooping of the eyelid; third nerve palsy
132 terms
Orbit and Eye
What bones comprise the orbit?
What bones comprise the orbital margin?
Roof of the orbit
Medial wall of orbit
frontal, ethnic, lacrimal maxilla, zygomatic, sphenoid, palat…
frontal, zygomatic, maxillary
frontal bone, lesser wind of sphenoid bone
ethmoid, frontal, lacrimal, sphenoid bones
What bones comprise the orbit?
frontal, ethnic, lacrimal maxilla, zygomatic, sphenoid, palat…
What bones comprise the orbital margin?
frontal, zygomatic, maxillary
61 terms
Orbit and Eye
Orbits are a pair of
Roof of the orbit
Lateral wall of the orbit
Floor of the orbit
bony cavities
Orbital plate of frontal bone
Zygomatic one and greater wing of sphenoid
Maxilla
Orbits are a pair of
bony cavities
Roof of the orbit
Orbital plate of frontal bone
6 terms
Eye and Orbit
The eye is composed of three layers fr…
fibrous layer of the eye
vascular layer of the eye
neural layer
Composed of three layers from superficial to deep:... 1) fibrous…
-the part of the eye that consists of the sclera and cornea
-the part of the eye that consists of the choroid, ciliary bo…
-the part of the eye that consists of the retina
The eye is composed of three layers fr…
Composed of three layers from superficial to deep:... 1) fibrous…
fibrous layer of the eye
-the part of the eye that consists of the sclera and cornea
79 terms
eye and orbit
superior wall bones
lateral wall
medial wall
inferior wall
frontal
sphenoid (greater wing)... zygomatic
ethmoid... lacrimal... maxilla... sphenoid lesser wing
maxilla... zygomatic
superior wall bones
frontal
lateral wall
sphenoid (greater wing)... zygomatic
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