L9-Head and Neck Vascular
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Transcript of L9-Head and Neck Vascular
Head and Neck Vascularisation
dr. Yudha FP
Arteries of head, face & neck
Arcus aorta
Truncus brachiocephalica
A. Carotis communis dekstra
A. Carotis interna
A. Carotis eksterna
A. Subclavia dekstra
A. Carotis communis sinistra
A. Carotis interna
A. Carotis eksterna
A. Subclavia sinistra
A R T E R I
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Common carotids branch: ◦ Internal carotids◦ External
carotids
Subclavian: 3 branches◦ Vertebral
arteries ◦ Thyrocerical
trunk◦ Costocervical
trunk
Common carotid arteries◦ Main sources of blood supply to head, face and
neck◦ Located on either side of neck and divide into
internal and external carotid arteries Internal carotid artery
◦ Supplies brain, eyes, eyelids, forehead, nose and internal ear
External carotid artery◦ Supplies anterior(front) parts of scalp, ear, face,
neck and sides of head
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•Berada di dalam “vagina carotica” bersama dengan vena jugularis interna dan N. Vagus
•Bercabang menjadi arteri carotis eksterna et interna setinggi cart. Thyroid
Arteri carotis comunis
ARTERI CAROTIS EKSTERNA
cabang :a.tiroidea superiora.lingualisa.facialisa.oksipitalisa.temporalis superficialisa. maksilaris
ARTERI CAROTIS EKSTERNA
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◦ Enters skull through carotid canal
◦ Gives off: Ophthalmic artery
◦ Then divides into anterior and middle cerebral arteries (see next slides):together they supply 80% of cerebrum
ARTERI CAROTIS INTERNA
Circulus Arteriosus Willisi
Arteri Otak
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*
**
*
R and L vertebral arteries* (from subclavians)Ascend through vertebral foramina of C6-C1 transverse processesThrough foramen magnum into skullJoin to form one Basilar artery*
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Note how it loops around pituitary gland & optic chiasm
Basilar artery: branches divides into
posterior cerebral arteries
Posterior communicating arteries
Connect to middle cerebral arteries
Called:CIRCLE OF WILLIS
CIRCLE OF WILLIS
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Angiogram
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Middle cerebral arteries run through lateral fissures
Anterior cerebral arteries of each side, through anterior communicating artery, anastomose
(an anastomosis is a union)
arteriogram
VEINS OF THE HEAD AND NECK
VEINS OF THE HEAD AND NECK
SINUS SAGITALIS SUPERIOR VENA JUGULARIS INTERNA DEKSTRASINUS SAGITALIS INFERIOR VENA JUGULARIS INTERNA SINISTRAVENA EMISSARIA fs. Untuk menghubungkan vena intra dan ekstra cranial
Veins of the Head and neck Venous drainage
from the face is entirely superficial
All the venous drainage from the head and neck terminate in the internal jugular vein which join the subclavian vein to form the brachiocephalic vein behind the medial end of the clavicle
Veins of the Head and neck Facial vein:
◦ is formed by the union of the supraorbital and supratrochlear veins the medial canthus to form the angular vein
◦ Communicate with the cavernous sinus through the ophthalmic vein via the supraorbital
Facial vein: descend on the face behind
the facial artery to the lower border of the mandible
to be joined by the anterior division of the retomandibular vein
Joins the:◦ pterygoid plexus through
deep facial vein ◦ Cavernous sinus through
superior ophthalmic vein
Veins of the Head and neck
Retromandibular vein:◦ formed by the union of
superficial temporal and maxillary vein from the pterygoid plexus
◦ passes downwards in the substance of the parotid gland emerging from its lower border & divide into two divisions
Veins of the Head and neck
Pterygoid plexus: ◦ A network of very small
veins, lie around and within the lateral pterygoid muscle in the infratemporal region
◦ receive some of the veins that correspond to the inferior ophthalmic vein (internal carotid blood) and the deep facial vein.
Veins of the Head and neck
Pterygoid plexus: Drain into a pair of large,
short maxillary veins which join the superficial temporal vein to form the retromandibular.
Deep facial vein drain the plexus into the facial vein if the maxillary is occluded
Act as peripheral pump, to aid venous return by the pumping action of the muscle every time the mouth is opened.
Veins of the Head and neck Anterior division:
◦ joins the facial vein
Posterior division: ◦ pierces the deep
fascia and join the posterior auricular vein to form the external jugular vein.
It empty into the subclavian vein
Veins of the Head and neck
External jugular vein:◦ Begins behind the angle of the
mandible by the union of the posterior auricular and posterior division of the retromandibular veins.
◦ It descend obliquely, deep to the platysma, receive the posterior external jugular vein
◦ pierce the deep fascia just above the clavicle and drain into the subclavian vein
Veins of the Head and neck
Internal jugular vein:
◦ It receive blood from the brain, face and the neck.
◦ It emerges through the jugular foramen,as a continuation of the sigmoid sinus descend down in the neck, first behind then lateral to the internal carotid artery inside the carotid sheath
TERIMAKASIH