Lecture 3.2: Oral Region and Oesophagus Flashcards
What is Ingestion?
The process of taking food, drink, or another substance into the body by swallowing or absorbing it
What is Mastication?
The process by which food is crushed and ground by teeth
What is Salivation?
The process of producing saliva in the mouth
What is Swallowing?
The process of passing food from the mouth, by way of the pharynx and oesophagus, to the stomach
Are the Submandibular Salivary Glands Serous or Mucous? What do they secrete?
- Serous & Mucous
- Secrete various enzymes, including
Damylase and lysozyme
Are the Parotid Salivary Glands Serous or Mucous? What do they secrete?
- Mainly Serous
- Watery secretion rich in enzymes, but
little mucus - Secrete D-amylase (stored as
zymogen granules)
Are the Sublingual Salivary Glands Serous or Mucous? What do they secrete?
- Mainly Mucous
- Viscous secretion, no enzymes, lots
of mucus
What Structure do Salivary Glands have?
Compound Tubuloacinar Glands
What is the Role of Incisors (teeth) in Mastication?
Cut food
What is the Role of Molars (teeth) in Mastication?
Crush food
What muscles are involved in Mastication? (4)
- Masseter
- Temporalis
- Medial pterygoid
- Lateral pterygoid
What movement does the Masseter control?
Elevation of the mandible
What movement does the Temporalis control?
Elevation and retraction of the mandible
What movement does the Medial pterygoid control?
Elevation and side-to-side movements of the mandible
What movement does the Lateral pterygoid control?
Protrusion and side-to-side movements of the mandible
