Chapter 14 Digestive System Flashcards
What are the organs of the GI tract?
Mouth, Pharynx, esophagus, stomach, small intestine, large intestine, rectum, anus
What are the accessory organs of the digestive system?
Salivary glands
Liver
Gallbladder
Pancreas
What are the four layers that form the wall of the GI tract?
Mucosa
Submucosa
Muscularis
Serosa
What are the 5 basic processes that occur in the digestive system?
Mechanical processing and movement
Secretion
Digestion
Absorption
Elimination
What is peristalsis?
Propel food forward
What is segmentation?
Mix food with secretions
What is the function of teeth?
Bite and chew food
What are the four types of human teeth
Incisors
Canines
Premolars
Molars
What are the functions of the tongue
Positions and tastes food
What are the 3 salivary glands?
Parotid
Submandibular
Sublingual
What is the composition of saliva?
Mucin
Salivary amylase
Bicarbonate
Lysozyme
What are the two phases of swallowing?
Voluntary phase
Involuntary phase
What are the functions of the stomach
Food storage
Digests proteins
Regulation of delivery of partially digested food.
What are the four components of gastric juice?
Hydrochloric acid
Intrinsic factor
Mucus
Pepsinogen
What is chyme?
Watery mixture of partially digested food and gastric juice that is delivered to small intestine.