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32 Cards in this Set
- Front
- Back
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Which muscle is key to the carotid triangle?
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Posterior belly of the digastric muscle
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Nerves of the carotid triangle? (5)
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1. Glossopharyngeal IX
2. Vagus X 3. Spinal accesory XI 4. Hypoglossal XII 5. Sympathetic chain 6. Ansa cervicalis |
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What are the anterior branches of the external carotid artery (4)
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1. Superior thyroid artery
2. Lingual artery 3. Facial artery 4. Ascending pharyngeal artery |
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What are the posterior branches of the external carotid artery (2)
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1. Occipital artery
2. Posterior auricular artery |
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What are the terminal branches of the external carotid artery (2)
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1. Maxillary artery
2. Superficial temporal artery |
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What types of receptors are the carotid body & sinus?
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Carotid body= chemoreceptor
Carotid sinus = baroreceptor |
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What are the important venous communications in the head? (3)
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1. Pterygoid plexus --> Infratemporal fossa
2. Cavernous sinus --> Middle cranial fossa 3. Ophthalmic veins --> Orbit |
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What is the ANTERIOR boundary of carotid triangle?
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SUPERIOR BELLY OF OMOHYOID
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What is the POSTERIOR boundary of carotid triangle?
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SCM
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What is the SUPERIOR boundary of carotid triangle?
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POSTERIOR BELLY OF DIGASTRIC
(Key muscle) |
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What muscles make up the FLOOR of the carotid triangle? (4)
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FLOOR:
1. Hyoglossus 2. Thyrohyoid 3. Middle constrictor 4. Inferior constrictor |
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What are the SUPERFICIAL structures (between digastric & skin) of the carotid triangle? (3)
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1. Cutaneous veins
2. Great auricular nerve 3. Cervical branch of VII |
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What are the INTERMEDIATE structures (deep to digastric) of the carotid triangle? (5)
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1. Internal jugular vein
2. Internal & External carotid arteries 3. Vagus nerve X 4. Spinal accesorry XI 5. Hypoglossal XII |
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What are the DEEP structures of the carotid triangle? (2)
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1. Glossopharyngeal IX
2. Cervical sympathetic chain |
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Which VEINS are found in the carotid triangle? (5)
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1. Internal jugular
2. Common facial 3. Lingual vein 4. Superior thyroid vein 5. Middle thyroid vein |
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Which ARTERIES are found in the carotid triangle? (3)
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1. Common carotid
2. Internal carotid 3. External carotid (& branches) |
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What STRUCTURES are found in the carotid triangle? (2)
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1. Larynx
2. Thyroid |
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Where is the LOCATION of the carotid sheath?
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Neck between investing layer, pretracheal layer & prevertebral layer
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What is the SUPERIOR attachment of the carotid sheath?
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Base of skull
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What is the INFERIOR attachment of the carotid sheath?
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Merges w/ CT around arch of aorta
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What are the CONTENTS of the carotid sheath?
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Carotid sheath:
1. Internal carotid artery 2. Common carotid artery 3. Internal jugular vein 4. Vagus X |
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RIGHT common carotid arises from?
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Brachiocephalic trunk --> R. common carotid & R. subclavian
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LEFT common carotid artery arises from?
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Aorta--> L. common carotid & L. subclavian
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The common carotid birfucates at what level?
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C4
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What are the 5 branches of the Superior thyroid artery?
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1. Infrahyoid branch
2. Superior laryngeal branch 3. Cricothyroid branch 4. SCM branch 5. Glandular branches |
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What are the 2 principal collateral pathways?
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1. Opthalmic collaterals
2. Occipital anastomoses |
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What is the pathway of opthalmic collaterals?
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External carotid --> Facial artery --> Angular artery --> Opthalmic artery --> Carotid siphon
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What is the pathway of occipital anastomoses?
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External carotid --> Occipital artery --> Small meningeal arteries --> Vertebral artery
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What are the contents of the CAVERNOUS SINUS?
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1. Internal carotid artery
2. Oculomotor III 3. Trochlear IV 4. Abducens VI 5. Opthlamic V-1 6. Maxillary V-2 7. Sphenoid sinus |
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Vagus (CN X) exits the skull via?
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Jugular foramen
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Acessory CN XI exits skull via?
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Jugular foramen
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Hypoglossal CN XII exits via?
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Hypoglossal canal
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