ARTERIA CARÓTIDA PRIMITIVA

   Art. carotis comunis: arteria bilateral con un origen diferente a la derecha y a la izquierda.
   Carótida primitiva derecha, nace en la base del cuello de la bifurcación del tronco braquio-cefálico, ascendiendo por la región anterior del cuello.
   Carótida primitiva izquierda, nace en el tórax, de la porción horizontal del cayado de la aorta, tiendo un corto trayecto intratorácico antes de penetrar en el cuello.
   Ambas tienen un calibre similar y no dan ramos colaterales. Terminan bifurcándose en carótida externa e interna, a un centímetro por encima del borde superior del cartílago tiroides.
   Sinónimos: carótida común.
 
   <(F): Artère carotide primitive: sont des artères paires disposées de part et d'autre du cou et contenant le sang oxygéné qui va du cœur vers la tête. Les carotides sont accompagnées sur une grande partie de leur trajet par les veines jugulaires et le nerf pneumogastrique. Elles sont facilement perceptibles à la palpation, de part et d'autre de la pomme d'Adam, protégées par le muscle sterno-cléido-mastoïdien.
 
   <(Ing): Common carotid artery: is a paired structure that supplies blood to the head and neck. Although the left and right common carotid arteries follow the same course through the neck, their origin differs. On the left, the common carotid arises directly from the aortic arch whereas, on the right, the origin is from the brachiocephaic trunk. The left common carotid artery can be thought of as having two distinct parts: thoracic and cervical. Since the right common carotid arises caudally, it only really has a cervical portion. In the thoracic section, the left common carotid travels upwards through the superior mediastinum to the level of the left sternoclavicular joint where it is continuous with the cervical portion. The cervical section of both common carotids follow a similar course. Each vessel passes obliquely upwards from behind the sternoclavicular joint to the level of the upper border of the thyroid cartilage. In the lower neck, the two common carotid arteries are separated from each other by the trachea. However, as the carotids rise in the neck, they diverge come to be separated by the thyroid gland, the larynx and pharynx. Each common carotid is contained within a sheath which is derived from the deep cervical fascia. In addition to containing the common carotid artery, the sheath also comprises the internal jugular vein and vagus nerve: the vein lies lateral to the artery, with the nerve in between the two. At the level of the fourth cervical vertebra, the vessel bifurcates into the external and internal carotids.
 
 
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