Tony Serino, Ph.D. Clinical Anatomy Oral Region Tony Serino, Ph.D. Clinical Anatomy

Oral Cavity Zygomaticus Red Margin Risorius Mentalis

1 Temporalis Masseter Lateral Pterygoid Medial Pterygoid Digastrics 3 4 2 Muscles of Mastication 5

Mandible Mylohyoid line Notch Condyle Mandibular foramen Coronoid process Ramus Alveolar process Angle Body Mental foramen

Oral Cavity (sagittal) Mucosa: Stratified Squamous epithelia Muscularis: Skeletal muscle overlying bone (except for soft palate) Functions: Ingestion Mastication Hydration of food Begins chemical digestion Formation of bolus

Oral Cavity (anterior) (Red Margin)

Extrinsic Muscles of the Tongue Styloglossus Hyoglossus Genioglossus

Tongue Functions: mixing, speaking, and swallowing Intrinsic and extrinsic muscles Foliate papillae Three layers of skeletal muscle.

Taste (Gustatory) Sense

Tongue Innervation CN X Vagus CN IX Glossopharyngeal CN XII CN V Trigeminal Hypoglossal CN VII Facial Motor Sensory

Taste Bud

Major Salivary Glands Secrete saliva –mixture of water, mucus, electrolytes, antibodies and enzymes. Enzyme is salivary amylase which breaks down starches. IX VII VII

Primary Dentition (20)

Adult (Permanent) Dentition (32)

Teeth Function: mastication (chewing and grinding of food into a paste consistency)

Tooth Anatomy Odontoblasts –secrete dentin Ameloblasts –secrete enamel

Pharynx Function: deglutition Mucosa: Str. Squamous Muscularis: Skeletal