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Anatomy 205 > Carotid Triangle: External Carotid Artery > Flashcards

Carotid Triangle: External Carotid Artery Flashcards

1
Q

Origin

A

From CCA at upper border thyroid cartilage (disc between C3 and C4)

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2
Q

Course

A

Anteromedial to ICA outside carotid sheath

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3
Q

Termination

A

Inside parotid gland behind mandible neck dividing into:
1. Maxillary artery
2. Superficial temporal artery

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4
Q

Branches

A
  1. Superior thyroid artery
  2. Lingual artery
  3. Facial artery
  4. Posterior auricular artery
  5. Occipital artery
  6. Maxillary artery
  7. Superficial temporal artery
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5
Q

Branches from anterior aspect (3)

A
  1. Superior thyroid artery
  2. Lingual artery
  3. Facial artery
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6
Q

Branches from posterior aspect (2)

A
  1. Posterior auricular artery
  2. Occipital artery
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7
Q

Branches from medial aspect (1)

A

Ascending pharyngeal artery

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8
Q

Terminals (2)

A
  1. Maxillary artery
  2. Superficial temporal
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9
Q

Relations superficial

A
  1. 3 muscles
  2. 2 veins
  3. 1 nerve
  4. 1 gland
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10
Q

Relations superficial: 3 muscles

A
  1. Sternomastoid
  2. Posterior belly digastric
  3. Stylohyoid
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11
Q

Relations superficial: 2 veins

A
  1. Lingual vein
  2. Common facial vein
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12
Q

Relations superficial: 2 veins

A
  1. Lingual vein
  2. Common facial vein
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13
Q

Relations superficial: 1 nerve

A

Hypoglossal nerve

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14
Q

Relations superficial: 1 gland

A

Parotid with retromandibular vein inside

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15
Q

Deep Relations

A
  1. Parotid gland deep part
  2. Styloid process with styloglossus and Stylopharyngeus muscles
  3. Glossopharyngeal nerve
  4. Pharyngeal branch of vagus
  5. ICA
  6. Constrictors of pharynx
    1,2,3,4 deep to ECA
    Superficial to ICA (between ICA and ECA
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16
Q

Superior thryoid artery course

A
  1. ECA anterior aspect below tip of hyoid greater horn
  2. Descends downwards and forwards (closely related to external laryngeal nerve which supplies circothyroid) deep to infrahyoid muscles
  3. Towards gland apex
  4. Divides into terminal branches anterior and posterior
17
Q

Superior thyroid artery branches

A
  1. Infrahyoid artery
  2. Superior laryngeal artery
  3. Muscular branches
  4. Glandular branches (anterior and posterior)
18
Q

Infrahyoid artery

A

Runs along hyoid lower border anastomosing with opposite artery

19
Q

Superior laryngeal artery

A

Pierces thyrohyoid membrane with internal laryngeal nerve to supply larynx

20
Q

Muscular branches superior thyroid artery

A
  1. Sternomastoid muscle
  2. Circothyroid muscle
21
Q

Glandular branches

A

Upper 1/3 lobe (including apex)and upper 1/2 isthmus

Anatomy 205 (197 decks)

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