54) A 48-year-old male patient is brought to the emergency roo | Anatomy embryology histology videos & books

54) A 48-year-old male patient is brought to the emergency room because of intense pain of the right face and neck with transient visual loss of the right eye. On examination, the patient has palsy of the oculomotor nerve on the right side with resulting diplopia, along with a right lateralized painful Horner syndrome. This constellation of signs is suggestive of a cervical carotid dissection, which is a separation of the arterial tunical intima from the subjacent tunica media. Which numbered structure in Fig. 1-8 is the tunica intima?