CHAPTER 14

TONGUE

Overview and Topographic Anatomy

Gross Anatomy

Muscles

Nerve Supply

Vascular Supply

Clinical Correlates

Questions

Overview and Topographic Anatomy

GENERAL INFORMATION

Tongue: a muscular structure in the oral cavity, divided into 2 parts:

• Oral, movable part

• Pharyngeal, nonmovable part

Median fibrous septum is thick tissue separating the tongue into halves

Functions

• Mastication

• Taste

• Talking

• Deglutition

Appearance

The appearance of the tongue may reflect health problems:

• Fissured tongue

• Black hairy tongue

• Geographic tongue

Muscle Types

Extrinsic—move the tongue in the oral cavity

Intrinsic—change the tongue’s shape

Gross Anatomy

DORSAL SURFACE

VENTRAL SURFACE

Muscles

EXTRINSIC TONGUE MUSCLES

INTRINSIC TONGUE MUSCLES

Nerve Supply

SENSORY INNERVATION

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