Anatomy And Physiolo

H The Head_

Regions of the head take their names from the underlying bones of the skull (e.g., frontal area). Knowing this anatomy helps to locate and describe physical findings.

Two paired salivary glands lie near the mandible: the parotid gland, superficial to and behind the mandible (both visible and palpable when enlarged), and the submandibular gland, located deep to the mandible. Feel for the latter as you bow and press your tongue against your lower incisors. Its lobular surface can often be felt against the tightened muscle. The openings of the parotid and sub-mandibular ducts are visible within the oral cavity (see p. 130).

The superficial temporal artery passes upward just in front of the ear, where it is readily palpable. In many normal people, especially thin and elderly ones, the tortuous course of one of its branches can be traced across the forehead.

Vertex of head

Vertex of head

H The Eye_

Gross Anatomy. Identify the structures illustrated. Note that the upper eyelid covers a portion of the iris but does not normally overlap the pupil.

The opening between the eyelids is called the palpebral fissure. The white sclera may look somewhat buff-colored at its extreme periphery. Do not mistake this color for jaundice, which is a deeper yellow.

Til,

Upper eyelid

Sclera covered by conjunctiva

Lateral canthus —

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