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Gross Anatomy > Nerve, face and eye stuff > Flashcards

Nerve, face and eye stuff Flashcards

1
Q

Branches of trigeminal

A
  • V1 Opthalmic
  • V2 Maxillary
  • V3 Mandibular
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2
Q

Opthalmic branches

A
  • Frontal
  • Lacrimal
  • Nasocillary
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3
Q

Opthalmic provides sensory to where?

A

-Cornea of the eye

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4
Q

Frontal nerve branches

A
  • Supraorbital

- Supratrochela

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5
Q

Where does V2 or maxillary branch leave the skull?

A

-Foramen rotundum

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6
Q

Where does V2 or maxillary provide sensory to?

A
  • General sensation to the skin of the face below the orbit and nose
  • Supplies upper teeth
  • The branch that exits the infraorbital fissure is infraorbital nerve
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7
Q

Mandibular nerve exits where in the skull?

A

-Foramen ovale

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8
Q

Mandibular Nerve Branches

A
  • Inferior alveolar

- Lingual

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9
Q

Lingual Nerve

A
  • Trigeminal branch provides general sensation to the anterior part of the tongue
  • Carries preganglionic parasympathetic nerve fibers from the facial nerve for taste too the anterior 2/3s of the tongue
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10
Q

V3 provides motor to where?

A

-The muscles of mastication

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11
Q

Facial Nerve provides motor to where?

A

-The muscles of facial expression

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12
Q

Obicularis Oculi

A
  • Used to close the eye

- Innervated by the facial nerve

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13
Q

Obicularis Oris

A
  • Helps to close mouth

- Innervationed by facial nerve

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14
Q

Buccinator

A
  • Puckers cheeks

- Innervated by facial nerve

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15
Q

Two Parts of the facial nerve coming from the Pons

A

1) Motor root

2) Intermediate nerve

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16
Q

The motor root of the facial nerve

A

Innervates the muscles of facial expression

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17
Q

The intermediate nerve of the facial nerve

A
  • Taste (Anterior 2/3s of the tongue)
  • Parasympathetic fibers (Motor to glands)
  • Somatic sensory fibers (Small patch of skin around the ear)
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18
Q

Temporalis Muscles

A
  • Inserts on the coronoid process of the mandible

- Posterior fibers retract (ONLY RETRACTOR)

19
Q

Masseter

A

Elevates mandible

20
Q

Lateral Ptergoid

A
  • Inserts onto the condyle and articular disc

- Protracts and depresses mandible (ONLY PROTRACTOR)

21
Q

Medial Ptergoid

A

-Elevates mandible

22
Q

Mylohyoid and anterior digastric

A

-depress scapula

23
Q

Tempromandibular Joint

A
  • TMJ

- Modified hinge joint between condyle and mandibular fossa

24
Q

TMJ (Movements)

A
  • Rotation (Depression and elevation)
  • Translation (Protrusion and retraction)
  • Side to side movement
25
Q

Steps of Mastication

A

1) LP protracts the mandible
2) Open wider with help of mylohyoid and anterior digastric (Most unstable)
3) Return to stable position because of anterior temporalis, masseter, and medial pterygoid elevate the mandible and the POSTERIOR temporalis retracts

26
Q

Incisal chewing

A
  • Symmetrical chewing

- Front teeth

27
Q

Side to Side chewing

A
  • Asymmetrical
  • Grinding
  • 1 condyle is forward on articular tubercle and 1 is not
28
Q

Tongue Motor Lession

A
  • Tongue will move to side of the effected side
  • Genioglossus on affected side isn’t working
  • Sticking the tongue out can check the integrity of the hypoglossal nerve
29
Q

LR6SO4AO3

A

Lateral Rectus 6 (Abducens)
Superior Oblique 4 (Trochlear
All Others 3 (Oculomotor)

30
Q

Oculomotor innervates:

A

-Levator Palpebrae
-Superior Rectus
-Inferior Rectus
-Medial Rectus
Inferior Oblique

31
Q

Opthalmic Nerve (V1)

A

-Sensory info for the eye

32
Q

Levator Palpebrae

A

-Elevates the eyelid

33
Q

Superior Rectus

A

-Upward and slightly medial

34
Q

Inferior Rectus

A

-Downward and slightly medial

35
Q

Medial Rectus

A

-Medial and Adducts

36
Q

Lateral Rectus

A
  • Abducts eye

- Lateral gaze

37
Q

Superior Oblique

A

-Down and out

38
Q

Inferior oblique

A

-Up and out

39
Q

Diplopia

A

Double vision

40
Q

Strabismus

A

One eye is paralyzed

41
Q

Ptosis

A

Drooping of upper eye lid

42
Q

Oculomotor lesion

A
  • Double vision
  • Later strabismus
  • Loss of accomidation
43
Q

Trochlear Lesion

A
  • Double Vision
  • Weak downward gaze
  • Patient has to tilt head downward and out to go down stairs
44
Q

Abducens Lesion

A
  • Double Vision
  • Medial strabismus
  • Eye cannot move laterally

Gross Anatomy (3 decks)

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