Applied anatomy and oral surgery for dental students . is isthe direction of the artery in the neck, its upper termi-nation is at the level of the upper edge of the thyroidcartilage. The common carotid artery lies in the carotidsheath, a process of the cervical fascia (p. 48) whichalso incloses the internal jugular vein and the pneumo-gastric nerve. The vein lies external to the artery, whilethe nerve is between and behind the two. The descen-dens h>poglossi nerve, a branch of the hypoglossal,passes down the neck on the front of the carotid structures within the carotid sheath li
Applied anatomy and oral surgery for dental students . is isthe direction of the artery in the neck, its upper termi-nation is at the level of the upper edge of the thyroidcartilage. The common carotid artery lies in the carotidsheath, a process of the cervical fascia (p. 48) whichalso incloses the internal jugular vein and the pneumo-gastric nerve. The vein lies external to the artery, whilethe nerve is between and behind the two. The descen-dens h>poglossi nerve, a branch of the hypoglossal,passes down the neck on the front of the carotid structures within the carotid sheath lie just beneaththe inner edge of the sternocleidomastoid muscle. At the level of the upper edge of the thyroid cartilage,in the superior carotid triangle, the common carotidbifurcates into the interna! and external carotid arteries. The internal carotid artery (Fig. 19) passes upward 63 64 APPLIED ANATOMY to the carotid canal in the petrous portion of the tem-poral bone. It is divided into four portions—cervical,petrous, cavernous, and Fig. 18.—The chief arteries of the neck: A, Common carotid; B, external caro-tid; C, internal carotid; D, vertebral (Deaver, modified). The cervical portion is at first more superficial than,and to the outer side of, the external carotid artery. Itthen passes more deeply, in relation with the superior BL OOD- VESSELS 65 constrictor of the pharynx, which separates it from thetonsil, and the transverse processes of the three uppercervical vertebrae. The artery is inclosed in a sheathin company with the internal jugular vein and the pneu-mogastric nerve.
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Keywords: ., bookauthoriv, bookcentury1900, bookdecade1910, booksubjectanatomy
