Digestive System

Question 1

Teeth

Answer 1

• 20 deciduous (baby teeth)
• 32 permanent (adult)

Question 2

Hard palate formation

Answer 2

Formed by palatine process of maxilla and horizontal plates of palatine bone

Question 3

Soft palate

Answer 3

Muscular portion with center at uvula
Posterior to hard palate

Question 4

Salivary glands

Answer 4

Send enzymes that break down carbs and start the digestive process, turns food into bolus

Question 5

Salivary glands - sublingual

Answer 5

• Anteriorly located in chin
• beneath tongue
• opens superiorly to oral cavity
• innervated by CN VII

Question 6

Salivary gland - Submandibular

Answer 6

• posterior to sublingual gland
• deep to mandible
• opens to oral cavity via submandibular duct
• innervated by CN VII

Question 7

Salivary gland - parotid gland

Answer 7

• between angle of mandible and sternocleidomastoid
• by ear
• opens to oral cavity adjacent to second upper molar via parotid duct
• innervated by CN IX

Question 8

Tongue

Answer 8

• muscular structure found on the floor of oral cavity
• functions in chewing, swallowing, phonation, taste
• supported by the genioglossus, hyoglossus, and stylogossus muscles

Question 9

Pharynx

Answer 9

Located between oral cavity and the esophagus, has nasal, oral, and laryngeal division

Question 10

Fauces

Answer 10

Passageway between oral cavity and pharynx formed by palatoglossal and palatopharyngeal arches

Question 11

Palatoglossal (superficial) and palatopharyngeal (deep) arches

Answer 11

Folds in soft tissue of oral cavity
In between is palatine tonsil

Question 12

Esophagus

Answer 12

• muscular tube connecting oral cavity and stomach
• goes through diaphragm to reach abdominal cavity
• has longitudinal muscles and circular muscles to do peristalsis
• epiglottis is closed so no food goes into trachea

Question 13

Peristalsis

Answer 13

Contraction and relaxation of bowls to push food through the intestines