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Anatomy > Ch1 > Flashcards

Ch1 Flashcards

1
Q

Branches of external carotid behind ear

A
  • post auricular

- occipital

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2
Q

Arteries related to digastric

A

Occipital artery: passes along the lower border of posterior belly of the digastric muscle.
Posterior auricular artery: passes along the upper border of posterior belly of digastric muscle.

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3
Q

Blood supply for facial N

A

Posterior auricular gives stylomastoid artery which supplies the facial nerve in the facial canal.

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4
Q

What area of scalp is blood supplied by supra t and supra orbital

A

Forehead and far back as the vertix

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5
Q

Occipital vein drains into …

A

Suboccipital plexus

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6
Q

Nerve supply to scalp in front of the ear

A
  1. Supratrochlear

nerve:

from

ophthalmic nerve to the forehead. 2. Supraorbital nerve: from the ophthalmic nerve to the scalp till the

vertex (highest point of skull).. 3. Zygomaticotemporal nerve: from the

maxillary nerve to the temporal region.
4. Auriculotemporal nerve: from the mandibular nerve to the temporal region

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7
Q

N supply to scalp behind ear

A

Great auricular nerve (C2, 3): to the skin of the angle of the mandible, lower half of

DR

the auricle and the scalp.

Lesser occipital nerve( v of c2) to the scalp and upper half of the auricle (inner surface).
3 Greater occipital nerve (dorsal ramus of c2 ) scalp till vertix

43rd occipital nerve (dorsal ramus of C3): to skin over external occipital protuberance.

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8
Q

LYMPH DRAINAGE OF THE FACE

A

By 3 groups of lymph nodes:

  1. Submental nodes:

Drain the chin and the central part of the lower lip.

  1. Preauricular (parotid) nodes:

Drain the lateral half of the eyelids & lateral part of the face.

  1. Submandibular nodes:

Drain the medial half of the eyelids and remaining parts of the face.

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9
Q

Buccinator origin and insertion

A

:

Origin:

  1. Upper fibers:

From the maxilla above the 3 molar teeth.

  1. Lower fibers:

From the mandible below the 3 molar teeth.

  1. Middle fibers:

From the pterygomandibular ligament which extends from the pterygoid hamulus superiorly to mylohyoid line of the mandible inferiorly.

Insertion:

  1. Upper fibers: into the upper lip.
  2. Lower fibers: into the lower lip.
  3. Middle fibers: cross at the corner of the mouth so that upper fibers enter the lower lip and lower fibers enter the upper lip.
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10
Q

Orbicularis oris origin insertion and action

A

: consists of fibers that completely encircle the mouth (oral sphincter)

Origin: from the maxilla, the mandible and from the buccinator muscles Insertion: into the skin and mucous membrane of the lips.

Action: it closes the lips and is used during whistling.

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11
Q

Ear n supply

A

G auricular
Lower half

L occ.
Upper and internal

Auriculo temporal
Ext auditory meatus

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12
Q

Eyelid n supply

A

Upper

    • supra troclear
  • – sup orbital
  • —-palpebral of lacrimal of ophthalmic

Lower
– palpepral of infraorbital

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13
Q

Nose skin n supply

A
  • lateral
    From infraorbital

Dorsal

  • upper from infratrochlear of nasociliary
  • lower from ext nasal
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14
Q

Cheek n supply

A 
- over zygo
..zygomatico facial
- over buccinator
.. buccal of mandibular
- also infra orbital
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15
Q

Temple n supply

A

In front of ear post to ant

  • auriculo temporal
  • zygomatico temporal
  • lesser occipital behind ear
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16
Q

Facial nerve 7 branches

A

Branches of the extracranial part:

A. At the stylomastoid foramen: 2 branches:

Branches of the Facial Nerve

  1. Posterior auricular nerve: to occipital belly of the occipitofrontalis and the posterior auricular muscle. 2. Nerve to digastric: to the posterior belly of the digastric and stylohyoid muscles.

B. Inside the parotid gland: 5 terminal branches:

  1. Temporal branch: to frontal belly of occipito

frontalis and anterior & superior auricular muscles. 2. Zygomatic branch: to the orbicularis oculi.

  1. Buccal branch: to the buccinator muscle.
  2. Mandibular branch: to muscles of the lower lip.
  3. Cervical branch: to the platysma.
17
Q

Foramen of f nerve

A

Stylomastoid foramen

18
Q

Facial artery arises where

A

Above lingual

19
Q

Relation of facial artery and vein

A

Artery is ant to vein

20
Q

Anastomosis of facial artery

A
  • angular with branches of ophthalmic

- labial (sup labial) with each other providing connections between both ext carotid in both sides

21
Q

Branches of facial artery

A
  • angular
  • lateral nasal
  • inf labial artery
  • sup labial with its Septal branch
22
Q

Branches of sup temporal A

A

Transverse facial artery

2: Zygomatico-orbital artery)

3: Middle temporal artey
4: Anterior auricular artery
Sa: Anterior terminal branch 5b. Posterior terminal branch

23
Q

2 terminal branches of external carotid

A

Max A

Sup Temporal A

24
Q

Transverse facial A course

A

below the zygomatic arch and above the parotid duct.

25
Q

Ant auricular and sup temporal supply which structures

A

Anterior auricular artery; to the external auditory meatus

5. Anterior & posterior terminal branches: to the lateral aspect of the scalp…

26
Q

blood supply of face from max A branches

A
  • inf orbital A
  • mental A
  • buccal A
27
Q

Z.facial and z temporal as A and as N

A

As A
From ophthalmic lacrimal

As N
From maxillary n

28
Q

Ophthalmic A contribution to face blood supply

A
  • Supra orbital and trochlear to the scalp
  • z.facial and z.temporal of lacrimal of ophthalmic
  • dorsal nasal A terminal branch to the dorsum of nose
29
Q

Veins of the face

A
  • ant facial
  • common facial
  • retro mandibular
  • deep facial
30
Q

Dangerous area of the face

A

Forehead
Nose
Upper lip
Medial corner of the eye

31
Q

Bells palsy symptoms

A

Facial nerve injury at the stylomastoid foramen (Bell’s palsy) causes paralysis of the muscles of facial expression of the same side:

  1. Frontalis: inability to raise the eyebrow. 2. Orbicularis oculi: inability to close the eye.
  2. Buccinator: accumulation of food in the vestibule.
  3. Orbicularis oris: inability to whistle or blow.
  4. Oral muscles: drooping of angle of the mouth. 6. Platysma: the skin falls away from the neck

Anatomy (6 decks)

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