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

2. Oral Region: Topic Objectives
Be able to label and identify all skeletal, muscular and surface anatomy structures
Be able to identify the major structures of the oral cavity, tongue, pharynx and teeth.
Be able to describe the type of taste humans perceive.
Understand the innervations of the tongue.
Be able to describe the different types of teeth and the contrast the difference between deciduous and permanent teeth

3. Oral Cavity
Zygomaticus
Red Margin
Risorius
Mentalis

4. 1 Temporalis Masseter Lateral Pterygoid Medial Pterygoid Digastrics 34 2
Muscles of Mastication 5

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

6. 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

7. Oral Cavity (anterior)
(Red Margin)

8. Extrinsic Muscles of the Tongue
Styloglossus
Hyoglossus
Genioglossus

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

10. Taste (Gustatory) Sense

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

12. Taste Bud

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

14. Primary Dentition (20)

15. Adult (Permanent) Dentition (32)

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

17. Tooth Anatomy
Odontoblasts –secrete dentin Ameloblasts –secrete enamel

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