arteries of the head and neck - exploring nature science ... · arteries of the head and neck the...

superﬁcial temporal artery ophthalmic artery maxillary artery facial artery lingual artery superior thyroid artery larynx thyroid gland common carotid artery clavicle brachiocephalic trunk aortic arch occipital artery internal carotid artery external carotid artery vertebral artery subclavian artery Arteries of the Head and Neck e common carotid arteries supply blood to the head and neck. Each common carotid artery runs up one side of the neck (at the branch is a swollen area containing a pressoreceptor regulating BP), each branches into an: External carotid artery (supplies blood to the face and scalp) and and internal carotid artery (blood to the brain) e external carotid arteries branch into: > superior thyroid artery supplies blood to the thyroid gland and larynx > lingual artery supplies blood to the tongue > facial artery supplies blood to the face > occipital artery supplies blood to the posterior scalp > en splits into maxillary artery (blood supply to deep facial structures) and superﬁcial temporal artery (blood supply to the skin of the scalp and face above zygomatic arch). ©Sheri Amsel www.exploringnature.org

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Page 1: Arteries of the Head and Neck - Exploring Nature Science ... · Arteries of the Head and Neck The common carotid arteries supply blood to the head and neck. Each common carotid artery

superficial temporal artery

ophthalmic artery

maxillary artery

facial arterylingual arterysuperior thyroid arterylarynxthyroid gland

common carotid artery

clavicle

brachiocephalic trunk

aortic arch

occipital artery

internal carotid artery

external carotid artery

vertebral artery

subclavian artery

Arteries of the Head and NeckThe common carotid arteries supply blood to the head and neck. Each common carotid artery runs up one side

of the neck (at the branch is a swollen area containing a pressoreceptor regulating BP), each branches into an:

External carotid artery (supplies blood to the face and scalp) and and internal carotid artery (blood to the

brain)

The external carotid arteries branch into:

> superior thyroid artery supplies blood to the thyroid gland and larynx

> lingual artery supplies blood to the tongue

> facial artery supplies blood to the face

> occipital artery supplies blood to the posterior scalp

> Then splits into maxillary artery (blood supply to deep facial structures) and superficial temporal artery

(blood supply to the skin of the scalp and face above zygomatic arch).

©Sheri Amsel www.exploringnature.org

Page 2: Arteries of the Head and Neck - Exploring Nature Science ... · Arteries of the Head and Neck The common carotid arteries supply blood to the head and neck. Each common carotid artery

superficial temporal artery

ophthalmic artery

maxillary artery

facial arterylingual arterysuperior thyroid arterylarynxthyroid gland

common carotid artery

clavicle

brachiocephalic trunk

aortic arch

occipital artery

internal carotid artery

external carotid artery

vertebral artery

subclavian artery

Arteries of the Head and Neck

©Sheri Amselwww.exploringnature.org

superficial temporal artery

ophthalmic artery

maxillary artery

facial arterylingual arterysuperior thyroid arterylarynxthyroid gland

common carotid artery

clavicle

brachiocephalic trunk

aortic arch

occipital artery

internal carotid artery

external carotid artery

vertebral artery

subclavian artery

Arteries of the Head and Neck

©Sheri Amselwww.exploringnature.org

The Circle of WillisThe internal carotid artery helps create the Circle of Willis – an anastomoses of brain circulation between

the internal carotid and vertebral arteries. The internal carotid arteries supply blood to 80% of the cerebral

hemispheres. They enter the skull through the carotid canals and branch into:

> ophthalmic arteries which supply blood to the eye sockets, anterior scalp and nasal cavity

> anterior cerebral arteries which supply blood to the medial cerebral hemispheres

> middle cerebral arteries which supply blood to the lateral temporal lobes and parietal lobes.

From the other end of the circle, the vertebral arteries supply blood to the posterior head and neck. They travel

up the neck through the transverse processes of the cervical vertebrae and enter the skull through the foramen

magnum to join into the:

> basilar artery which supplies blood to the brain stem.

> It then splits into two posterior cerebral arteries supplying blood to occipital lobes and temporal lobes.

> Two posterior communication arteries connect the posterior cerebral arteries to the middle cerebral

arteries forming the Circle of Willis.

©Sheri Amsel www.exploringnature.org

ventral view of the brain

ophthalmic artery

anterior cerebral artery

internal carotid artery

middle cerebral artery

posterior communicating artery

basilar artery

vertebral artery

Page 5: Arteries of the Head and Neck - Exploring Nature Science ... · Arteries of the Head and Neck The common carotid arteries supply blood to the head and neck. Each common carotid artery

ventral view of the brain

ophthalmic artery

anterior cerebral artery

internal carotid artery

middle cerebral artery

posterior communicating arteryposterior cerebral artery

basilar artery

vertebral artery

The Circle of Willis

anterior cerebral artery

middle cerebral artery

posterior communicating artery

posterior cerebral artery

internal carotid arteries

Close Up of the Circle of Willis

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