Eye And Ear Flashcards

1
Q

What eye muscles perform extorsion

A

Inferior oblique

Inferior rectus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What eye muscles perform intorsion

A

Sup. Oblique

Sup. Rectus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which muscles depress the eye

A

Sup. Oblique

Inferior rectus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which muscles elevate the eye

A

Inferior oblique

Superior rectus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What Nerve innervates lateral rectus

A

Abducens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What Nerve innervates superior oblique

A

Trochlear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What movement would clinically test the function of the Trochlear Nerve

A

Adduction followed by depression

Superior oblique

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Abducens paralysis would present how ?

A

Unapposed adduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What Nerve exits the supra orbital foramen to supply the skin of the forehead

A

Frontal nerve (a branch off ophthalmic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What artery supplies the eye

A

Ophthalmic (branches off internal carotid)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Name the 3 layers/tunics of the eye

A

Fibrous, vascular, nervous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What comprises the vascular tunic

A

Choroid

Ciliary body

Iris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What seperates the anterior and posterior segments of the eye

A

Lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What separates the anterior and posterior chambers of the anterior segment

A

Iris/Pupil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Briefly describe Glaucoma

A

Build up of aqueous humor in the eyeball which cannot escape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Briefly describe coloboma

A

Malformation (missing tissue) of the eye

Usually congenital, May be from trauma

Usually of the iris, lens or retina

17
Q

What is Hyphema

A

Build up of blood between the iris and cornea

Trauma induced

18
Q

What is Ottis Externa

A

Inflammation/pain/swelling of the external ear

19
Q

What lubricates the eyeball

A

Tarsal glands

20
Q

What is the conjunctiva

A

Transparent mucous membrane

Cover inner surface of eyelids and anterior eyeball

21
Q

What produces tears

A

Lacrimal apparatus

22
Q

What guides the tears into the lacrimal sac

A

Lacrimal canaliculi

23
Q

Describe the pathway of the tears

A
  1. Lacrimal Gland
  2. Canaliculi
  3. Lacrimal sac
  4. Nasolacrimal duct
  5. Inferior nasal meatus
24
Q

Function of Medial Palpebral Ligament

A

Orbicularis Oculi attaches here

25
What sheaths surround optic nerve
Duran and Arachnoid
26
What is the common tendinous ring
Common attachment site for extrinsic eye muscles
27
Movement required to clinically test inferior oblique
Adduct then elevate
28
Movement required to clinically test inferior rectus
Abduct then depress
29
What movement is required to clinically test the superior rectus
Abduct then elevate
30
Cause of blurry vision
All rays of light not focused on to the Macula
31
Name the two muscles that act on the pupil
Dilator pupillae Sphincter pupillae
32
What occurs at the ciliary body and lens during distant vision
Cilliary - relaxed Lens - stretched thin
33
What occurs at the ciliary body and lens during near vision
Ciliary - contracted Lens - becomes more spherical
34
An open-angled glaucoma is caused by what
Blockage of the scleral venous sinus
35
A closed-angle glaucoma is caused by what
Iris closing off and blocking the drainage angle between iris and lens
36
How may an ear infection affect the tongue
Infection may lead to compression on the Chorda Tympani Nerve Leading to loss of sensation to anterior 2/3 of the tongue
37
What muscles prevent over vibration of the ossicle bones during gradual noise increase
Tensor tympani Stapedius