blood supply of head & neck dr. sama-ul-haque dr. sama-ul-haque
TRANSCRIPT
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Blood Supply of Head & Neck
Dr. Sama-ul-Dr. Sama-ul-HaqueHaque
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ObjectivesObjectives• Enlist the major arteries supplying head and neck.• How common carotid arteries take origin.• Enlist important relations of common carotid arteries.• Describe the relations and branches of external carotid
artery. • Describe the relations and branches of subclavian
artery.• Enlist the major veins supplying head and neck.• Discuss the formation of external and internal jugular
veins.• Describe the tributaries of external and internal jugular
veins.
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Arteries of Head & NeckArteries of Head & Neck
• Common Carotid Artery
• External Carotid Artery
• Internal Carotid Artery
• Subclavian Artery
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Common Carotid ArteriesCommon Carotid Arteries
Right Common Carotid Artery:
Arises from brachiocephalic artery
(Behind right sternoclavicular joint)
Left Common Carotid Artery:
Arises from Arch of Aorta
Runs upwards in the neck from sternoclavicular
joint to upper border of thyroid cartilage
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Common Carotid ArteriesCommon Carotid Arteries
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Common Carotid ArteriesCommon Carotid Arteries
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Relations of Common Carotid ArteryRelations of Common Carotid ArteryAnterolaterally:
Sternocleidomastoid Sternohyoid Sternothyroid Superior belly of omohyoid
Posteriorly: Prevertebral muscles
Medially: Larynx Pharynx
Laterally: Internal jugular vein
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Branches of Common Carotid ArteryBranches of Common Carotid Artery
External Carotid Artery
Internal Carotid Artery
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Common Carotid ArteriesCommon Carotid Arteries
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External Carotid ArteryExternal Carotid Artery
Begins at the level of upper border of thyroid cartilage
Terminates in the substance of the parotid gland behind
the neck of mandible by dividing into:
Superficial temporal artery
Maxillary artery
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Supply of External Carotid ArterySupply of External Carotid Artery
Neck
Face
Scalp
Tongue
Maxilla
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Branches of External Carotid ArteryBranches of External Carotid Artery Superior thyroid artery Ascending pharyngeal artery Lingual artery Facial artery Occipital artery Posterior auricular artery Superficial temporal artery Maxillary artery
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Branches of External Carotid ArteryBranches of External Carotid Artery
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Branches of External Carotid Artery
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Internal Carotid ArteryInternal Carotid Artery
Begins at the level of upper border of thyroid
cartilage
No branches in the neck
Through carotid canal enters into cranial cavity
Supplies brain, eyes, forehead and part of the nose
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Subclavian ArterySubclavian Artery
Right Subclavian Artery:
Arises from brachiocephalic artery
(Behind right sternoclavicular joint)
At outer border of 1st rib it becomes Axillary Artery
Left Subclavian Artery:
Arsis from Arch of Aorta in the thorax
Runs upwards to the root of the neck & arches
laterally
At outer border of 1st rib it becomes Axillary Artery
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Subclavian ArterySubclavian Artery
Scalenus Anterior muscle passes anterior to the
artery on each side and divides it into 3 parts.
1. 1st part of subclavian artery
2. 2nd part of subclavian artery
3. 3rd part of subclavian artery
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11stst part of Subclavian Artery part of Subclavian Artery
Extends from the origin of the subclavian artery to
the medial border of the Scalenus anterior muscle.
Branches:
1. Vertebral artery
2. Thyrocervical Trunk
3. Internal thoracic artery
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11stst part of Subclavian Artery part of Subclavian Artery
Branches:
1. Vertebral artery
Spinal and muscular branches in neck
Branches in skull
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11stst part of Subclavian Artery part of Subclavian Artery
Branches:
2. Thyrocervical Trunk
Inferior thyroid artery
Superficial cervical artery
Suprascapular artery
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11stst part of Subclavian Artery part of Subclavian Artery
Branches:
3. Internal thoracic artery
Superior epigastric artery
Musculophrenic artery
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22ndnd part of Subclavian Artery part of Subclavian Artery
Lies behind the Scalenus anterior muscle.
Branches:
1. Costocervical trunk
Superior intercostal artery
Deep cervical artery
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33rdrd part of Subclavian Artery part of Subclavian Artery
Extends from the lateral border of the Scalenus
anterior muscle to the lateral border of 1st rib.
Branches: (Occasional)
1. Superficial cervical artery
2. Suprascapular artery
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Subclavian ArterySubclavian Artery
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Branches of Subclavian ArteryBranches of Subclavian Artery
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Veins of Head & NeckVeins of Head & Neck
• Veins of Brain
• Venous Sinuses
• Veins of Face and Neck
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Veins of Face and NeckVeins of Face and Neck Facial vein Superficial temporal vein Maxillary vein Retromandibular vein External jugular vein Anterior jugular vein Internal jugular vein Subclavian vein
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Veins supplying Head and Neck
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Facial Vein
Formed at medial
angle of eye by
the union of
supraorbital and
supratrochlear veins.
It joins anterior
division of
retromandibular vein
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Superficial temporal Vein
Formed on the side of the scalp. Enters parotid gland.
It joins maxillary vein to form Retromandibular vein.
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Maxillary Vein
Formed in the Infratemporal fossa from the Pterygoid venous plexus.
It joins superficial temporal vein to form Retromandibular vein.
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Retromandibular Vein
Formed by the union of maxillary vein and superficial
temporal vein.
Leaving parotid gland divides into anterior branch and
posterior branch.
Anterior branch joins facial vein.
Posterior branch joins posterior auricular vein to form
external jugular vein.
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External jugular Vein
Formed behind the angle of jaw by the union of
Posterior branch of retromandibular vein with
posterior auricular vein.
It drains into subclavian vein
Tributaries:
Posterior external jugular
Transverse cervical
Suprascapular
Anterior jugular
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Internal jugular Vein
Receives blood from brain, face and neck.
Continuation of sigmoid sinus and leave the skull from
jugular foramen.
Ends by joining subclavian vein to form brachiocephalic
vein.
Tributaries: Facial vein Pharyngeal vein Lingual vein Superior thyroid vein Middle thyroid vein
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Subclavian Vein
Continuation of axillary vein at the outer border of 1st rib.
Joins internal jugular vein to form brachiocephalic vein.
Tributaries: External jugular vein
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Brachiocephalic Veins & SVC
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