Flashcards in Unit 9 - Digestive System Key Terms Deck (20)
10 inch long tube that carries food from the pharynx to the stomach, takes about 10 seconds for swallowed food to reach the stomach
acts as a bag to collect and churn food
major site of digestion and absorption of nutrients from food, average of 20 feet long
large intestine, fluid that remains after the small intestine mostly gets reabsorbed into the body
roof of the oral cavity
cartilaginous flap that folds down to cover the larynx and trachea so food is prevented from entering the respiratory tract.
wavelike muscular contractions
mixture of food and other digestive juices
lower esophageal sphincter
keeps the food from flowing back into the esophagus
regulates the passage of food into the small intestine
three sections of the small intestine in order
duodenum, jejunum, ileum
pouch or saclike area in the first 2-3 inches at the beginning of the colon
large intestine sections in order
ascending colon, transverse colon, descending colon, sigmoid colon
produces saliva which contains the digestive enzyme amylase that begins the digestion of carbohydrates
processes nutrients absorbed by the small intestine, detoxifies harmful substances, produces bile which helps break up fat. This is the only organ that can regenerate itself.
bile produced by the liver is stored here
buffers neutralize the chyme that just left the stomach, pancreatic enzymes chemically digest fats, carbohydrates, and proteins.