. Text-book of anatomy and physiology for nurses. nd occipitalat the back—that their general course is upward toward the vertex,and therefore a bandage may be so adjusted around the head as tocut off the blood supply to a great extent. The nerves have similar names and take a similar course. The tense temporal fascia covers the temporal muscle above thezygoma. The Face. The main artery, external maxillary (or facial), runs obliquelyupward toward the side of the nose; its course is tortuous, so that the play of the facialmuscles will not interferewith the passage of theblood current. Thefacial
. Text-book of anatomy and physiology for nurses. nd occipitalat the back—that their general course is upward toward the vertex,and therefore a bandage may be so adjusted around the head as tocut off the blood supply to a great extent. The nerves have similar names and take a similar course. The tense temporal fascia covers the temporal muscle above thezygoma. The Face. The main artery, external maxillary (or facial), runs obliquelyupward toward the side of the nose; its course is tortuous, so that the play of the facialmuscles will not interferewith the passage of theblood current. Thefacial vein is lateral tothe artery and not veryclose to it. Pulsation ofthe artery may be feltwhere it crosses the lowerborder of the mandible,about one inch in frontof the angle. The external carotidartery bifurcates in the f^g. Vessels^of Head. substance of the parotid gland in front of the ear,forming the temporal and internal maxillary arteries. The pulsationof the temporal is felt as it crosses the zygoma, and both here and 292. THE REGION OF THE NECK. 293 over the external maxillary on the border of the mandible, thecharacter of the hearts action may be appreciated while the patientis under the influence of ether. The motor nerves (facial nerve) come through the parotid glandand radiate on the side of the face, transversely toward the nose,upward toward the eye and forehead, and downward the towardthe neck. Sensory nerves, branches of the trifacial {trigeminus), appear atthe three foramina mentioned elsewhere—supraorbital, infraorbitaland mental—the three particularly sensitive spots in the front of theface. Practical note.—The tongue muscles and the floor of the mouth{mylo-hyoid muscle) are both connected with the mandible. There-fore, if the jaw be held forward and upward, it will control the posi-tion of the tongue when the muscles are relaxed, as under , the necessity for this precaution to prevent the tongue fromfalling back into the thr
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