Digestive System 2 Flashcards
3 pairs of salivary glands
Parotid- below ear
Submandibular- lower edge of mandible
Sublingual- floor of mouth
The 3 phases of digestion
Cephalic
Gastric
Intestinal
3 stages of swallowing
Voluntary
Pharyngeal (involuntary)
Esophageal
Functions of stomach
- Mixing and holding area for food
- Begins digestion of proteins
- Continues carb digestion
- Converts bolus into liquid chyme
- Also absorbs some substances
Gastric digestion (mechanical)
Propulsion
Emptying
Retropulsion
Explain the term peristalsis
Contraction and relaxation of smooth muscles which propels contents through the digestive tract. It is wave contraction of longitudinal and circular muscles preceded by wave relaxation of these muscles.
Why does the anal cavity have a different kind of epithelium?
Stratified squamous epithelium is necessary to provide protection due to moving parts causing friction during defacation