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1. Arises at the bifurcation of the CCA at the greater horn of the hyoid (C3).
2. Carotid sinus - at its bifurcation it shows a bulge, the carotid sinus. Here the wall is thin and contains baroreceptors supplied by CN IX which mediates BP impulses to medullary centers.
3. Carotid body - lies behind the bifurcation of the CCA, contains chemoreceptors concerned with respiratory reflexes. Its glomus cells contain dopamin and are innervated by CN IX.
4. Its has no branches in the neck and passes straight up in the carotid sheath to the carotid canal at the BOS.
5. Surface marking - along a line from the greater horn of the hyoid to the head of the mandible.


1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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