Digestive System** Flashcards
Breaks down starch during mechanical digestion
Amylase
Where is amylase found?
Saliva
What helps with mechanical digestion?
Teeth
Series of muscular contractions
Peristalsis
Mixing food with saliva
Bolus
Watery mixture of stomach fluids and food
Chyme
Kills bacteria and activates pepsin
HCl
Helps to break down protein
Pepsin
What 2 things does the stomach absorb?
Water and alcohol
The stomach is a common site for this disease
Ulcers
What are the 3 parts of the small intestine?
Duodenum, jejunum, ileum
Finger like projections in the small intestine
Villi
Keeps the small intestines together
Mesentary
What are the functions of the small intestine?
Chemical digestion and absorption
Also known as the colon
Large intestine
What are the 4 parts of the colon?
Ascending, traverse, descending, rectal
What is the function of the large intestine?
Removal of water form waste material
Not enough removal of water from waste
Diarrhea
Too much water removed from waste
Constipation
What accessory organ produces bile?
Liver
What does bile break down?
Fat, carbs, proteins, detoxes alcohol
What does the pancreas secrete?
Insulin and pancreatic juices
What is the function of the pancreas?
Produce insulin to regulate blood sugar levels, produce pancreatic juices to break down nutrients, produce sodium bicarbonate to neutralize stomach acid
Breaking food down into simpler chemicals
Chemical digestion
Breaking larger pieces into smaller pieces without changing the chemical composition
Mechanical digestion
What are the 4 layers of the alimentary canal?
Mucosa, submucosa, muscular, serosa
How many primary teeth are there?
20
How many secondary teeth are there?
32
What are teeth made of?
Enamel, dentin, pulp, cementum, nerves, blood vessels
What is the function of the uvula?
Close off the nasal cavity during swallowing
What does the saliva break down?
Food particles and carbohydrate digestion
What does the rate at which the stomach empties depends upon?
Fluidity of the chyme and type of food
Stimulates the release of pancreatic juice with a high bicarbonate ion concentration
Secretin
Stimulates the release of pancreatic juice with abundant digestive enzymes
Cholecystokinin
Major energy source
Carbohydrate
Carbohydrate % of diet
55%
Breaking food down into simpler chemicals
Chemical digestion
Breaking larger pieces into smaller pieces without changing the chemical composition
Mechanical digestion
What are the 4 layers of the alimentary canal?
Mucosa, submucosa, muscular, serosa
How many secondary teeth are there?
32
What are teeth made of?
Enamel, dentin, pulp, cementum, nerves, blood vessels
What is the function of the uvula?
Close off the nasal cavity during swallowing
What does the saliva break down?
Food particles and carbohydrate digestion
What does the rate at which the stomach empties depends upon?
Fluidity of the chyme and type of food
Stimulates the release of pancreatic juice with abundant digestive enzymes
Cholecystokinin
Major energy source
Carbohydrate
Carbohydrate % of diet
55%
How many primary teeth are there?
20
Stimulates the release of pancreatic juice with a high bicarbonate ion concentration
Secretin
Stimulates the release of pancreatic juice with abundant digestive enzymes
Cholecystokinin
Calories/gram of carbohydrates?
4
What are some sources of carbohydrates?
Fruits, sugar, honey, grain, pasta, potato, bread
Calories/gram of protein?
4
Calories/gram of fat?
9
Calories/gram of water?
0
Calories/gram of vitamins?
0
Calories/gram of minerals?
0
Helps in growth and repair
Proteins
% of protein in diet?
30%
What are some sources of protein?
Meat, eggs, fish, beans, grains
Production of cell membranes, nervous tissue, hormones, protection and insulation
Fat
% of fat in diet?
15%
What are some sources of fat?
Lard, animal fat, butter, oil
Regulates body processes
Vitamins
What are some sources of vitamins?
Milk, fruits, vegetables
Inorganic nutrients that the body needs for functions
Minerals
What are some sources of minerals?
Table salt
Makes bulk of blood lymph and bodily fluids; helps with eliminating waste and substance transportation
Water