Flashcards in BPK110 Chapt 3 Deck (202)
What are nutrients? and what are they made up of?
Nutrients are molecules which are made up of atoms
What forms organs? (2 things)
Cell and tissue
What forms cell and tissue? (5 things)
Carbohydrates, lipids, protein, water and minerals
What are organ systems?
Organs which function toward a common goal
How many organ systems make up an organism?
How do tissue communicate with each other?
With the help of hormones
What are hormones released by?
What are hormones?
Chemical messengers that travel through the blood and help organ systems communicate with other parts of the body
What is the digestive system responsible for? (2 things)
Digestion and absorption
What happens in the digestion stage?
Breaking down food into small pieces
What can be absorbed into the body? (3 things)
Sugar, amino acids and fatty acids
How long does it typically take for digestive tract to transit food?
What is the function of the mouth?
Break down food and mix it with saliva
What is the function of the salivary glands?
produce saliva which contains a starch-digesting enzyme
What is the function of the pharynx?
Conduit for food and inspired air
What is the function of the esophagus?
Moves food to stomach
What is the function of the stomach? (2 things)
Temporary store food
Turns bolus of food into semi liquid chime
What is the function of the liver
Make bile which aids in digestion and absorption of fat
What is the function of the pancreas?
Releases bicarbonate to neutralize intestinal contents; produces enzymes that digest carbohydrate, protein and fat
What is the function of the gallbladder
Stores bile and releases it into the small intestine when needed
What is the function of the small intestine
Absorbs nutrients into blood or lymph; most digestion occurs here
What is the function of the large intestine
Absorbs water and some vitamins and minerals; home to intestinal bacteria; passes waste material
What is the function of the anus
opens to allow waste to leave the body
Where is the lumen found?
What is the lumen?
The inside space of the tubular intestines
What are the 11 structures of the digestive tract?
How do food move around in the digestive tract? (2 ways)
Crucial proteins which speed up the rate of reaction in the digestive tract
Uses water to break down larger molecules into smaller ones