EYE - cavidad orbitaria Flashcards

1
Q

Size of eye

A

2 -3 cm

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2
Q

Fissura orbital superior - which bones

A

Alas mayor and menor del hueso esfenoides

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3
Q

Fissura orbital superior - communicates with

A

Infratemporal and pterigopalatino fissures

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4
Q

Where is the conducto optico

A

alas menores del hueso esfenoides

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5
Q

Where is the ethmoid orifice

A

lamina orbitaria del hueso ETHMOIDE y
pocion orbital del hueso FRONTAL

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6
Q

Where is the nasolacrimal sulcus and what does it connect to

A

Lacrimal bone + maxilar.
Connects to the nasal fosa

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7
Q

Where is the nasolacrimal sulcus and what does it connect to

A

Lacrimal bone + maxilar.
Connects to the nasal fossa

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8
Q

Which side of the globo ocular is vulnerable?

A

Pared Lateral

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9
Q

Angle between the the sagittal axis and the orbital axis ?

A

23 degrees

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10
Q

Angle between the sagittal axis and pared lateral

A

45 degrees

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10
Q

What makes up the tunica fibrosa ?

A

Cornea and sclera

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10
Q

What are the orifices of the sclera?

A
  1. Lamina cribosa de la esclerotica: nervio optico
  2. Posterior cilliary orifices: short posterior cilliary arteries and veins
  3. 2 long posterior cilliary arteries
  4. Medio orificios: venos vortices
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10
Q

What are the colours of the cornea and sclera?

A

Cornea: Transparent
Sclera: Normally white, blue in newborns and yellow in the old

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10
Q

Where is the limbo escerocorneal?

A

between the posterior end of the cornea and the anterior start of the sclera

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11
Q

Where is the conjunctiva?

A

Starts from the sclercorneal limbus and covers the posterior part of the eyelid before turning and covering part of the sclera.

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12
Q

Where is the conjunctiva?

A

The white of the eye

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13
Q

Wheere is the canal of schlemm

A

Posterior to the limbus sclerocorneal

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14
Q

What is the keratocone?

A

The thin, funnel like central part of the cornea(thickness is not uniform)

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15
Q

Innervation of the cornea

A

Sensitive = nasociliar (ofthalmic)
Motor = facial

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16
Q

What nerve is in charge of the corneal reflex?

A

Nasociliar nerve <- Ofthalmic <- Trigeminal

17
Q

3 aprts of the tunica media/vascular/uvea

A
  1. Iris, Cuerpo Ciliar and Coroides
18
Q

What are the names of the 2 iris muscles?

A

Circular and radial muscles

19
Q

What is miosis?

A

It is the closing of the pupil and mediated by the iridoconstrictors (circular muscles)

20
Q

What is midriasis?

A

It is the dilation or opening of the pupl and mediated by the radial muscles (iridodilatadores).

21
Q

What is midriasis?

A

It is the dilation or opening of the pupl and mediated by the radial muscles (iridodilatadores).

21
Q

What is miosis?

A

It is the closing of the pupil and mediated by the iridoconstrictors (circular muscles).

21
Q

Which is sympathetic and which is parasympathetic for miosis and midriadis.

A

Miosis - closing of the pupil - parasympathetic (oculomotor nerve)
Midriasis - dilation/opening of the pupil - sympathetic (sup. cervical ganglion)

21
Q

Sensitive innervation of the iris comes from the?

A

Trigeminal nerve

21
Q

Angle between the the sagittal axis and the orbital axis ?

A

23 degrees

21
Q

The orbit is related to the paranasal sinuses how:

A

Superiorly: Frontal sinuses
Inferiorly: Maxillary sinuses
Medially: Ethmoidal sinuses
Posteriorly: Sphenoid Sinuses

22
Q

The orbit is related to the paranasal sinuses how:

A

Superiorly: Frontal sinuses
Inferiorly: Maxillary sinuses
Medially: Ethmoidal sinuses
Posteriorly: Sphenoid Sinuses

22
Q

Innervation of the cilliar body comes from the?

A

Oculomotor nerve

22
Q

The orbit is related to the paranasal sinuses how:

A

Superiorly: Frontal sinuses
Inferiorly: Maxillary sinuses
Medially: Ethmoidal sinuses
Posteriorly: Sphenoid Sinuses

22
Q

What and where is the ORBICULUS CILIAR?

A

parte posterior y lisa del cuerpo cilliar (continuación de la ora serrata)

22
Q

What and where is the CORONA CILIAR?

A

Anterior, rough part

22
Q

What and where is the CORONA CILIAR?

A

Anterior, rough part of the cilliar body. It contains a lot of blood vessels that produce the humor acuoso

22
Q

What passes inside the anillo de zinn?

A
  1. OPtic Nerve
  2. Ofthalmic artery
  3. Oculomotor
  4. Abduccens
  5. Nasocilliar nerve
22
Q

What passes outside the anillo de zinn but inside the superior orbital fissure?

A

Frontal Nerve
Lagrimal nerve
Troclear nerve
Sup. + Inf Oftalmic nerves.

22
Q

Which of the orbital muscles are not innervated by the oculomotor nerve?

A

Superior Oblique: Trochlear
Rectus Lateral: Abduccens

23
Q

what are the 3 types of glands on the eyelid

A
  1. Meibomio/tarsal: sebaceous, interior side of the eyelid
  2. Zeiss/Sebaceous: related to the hair follicles of the eyelashes
  3. Moll/Ciliar: sweat/follicular
24
Q

What and where is the CORONA CILIAR?

A

Anterior, rough part of the cilliar body. It contains a lot of blood vessels that produce the humor acuoso

24
Q

What is the nerve in charge of accomodation?

A

Oculomotor (III)

25
Q

Angle between the the sagittal axis and the orbital axis ?

A

23 degrees

25
Q

The orbit is related to the paranasal sinuses how:

A

Superiorly: Frontal sinuses
Inferiorly: Maxillary sinuses
Medially: Ethmoidal sinuses
Posteriorly: Sphenoid Sinuses

26
Q

Angle between the the sagittal axis and the orbital axis ?

A

23 degrees

26
Q

The orbit is related to the paranasal sinuses how:

A

Superiorly: Frontal sinuses
Inferiorly: Maxillary sinuses
Medially: Ethmoidal sinuses
Posteriorly: Sphenoid Sinuses

27
Q

The orbit is related to the paranasal sinuses how:

A

Superiorly: Frontal sinuses
Inferiorly: Maxillary sinuses
Medially: Ethmoidal sinuses
Posteriorly: Sphenoid Sinuses

27
Q

Angle between the the sagittal axis and the orbital axis ?

A

23 degrees

27
Q

What and where is the CORONA CILIAR?

A

Anterior, rough part of the cilliar body. It contains a lot of blood vessels that produce the humor acuoso