Bio Digestion Quiz Flashcards
(50 cards)
Chemical Digestion
Use of digestive juices and enzymes to breakdown polymers into monomers
Mechanical Digestion
Breakdown of food into small particles by physically churning, grinding, and chewing
Intercellular Digestion
Cells ingest materials and break down food
Extra cellular
Occurs outside of the cells usually in a digestive tract
Paramecium
- Gullet: food ingested
- Food vacuole: breaks down food into simple components
- Anal pore: egestion
Trichocysts
Protects the paramecium by stinging the prey
Propulsion
- movement of food
- swallowing
Peristalsis
Propulsion by alternate contraction and relaxation in the walls of the alimentary canal (esophagus)
Saliva
- Mixture of water, ions, mucus, and enzymes
- keeps mouth moist
- dissolves food so can be tasted
Salivary Glands
Paired (two each)
Parotid
Submandibular
Sublingual
Pharynx
Back of the throat, connected to the oral/nasal cavities to esophagus and larynx
Epiglottis
Prevents food from entering the larynx when you swallow
Esophagus
Connects pharynx with stomach
Liver
- produces bile
- detoxifies poisons and drugs
- stored glucose
- processes fats and amino acids
- makes the blood protein
Bile
- Comes from dead red blood cells
- dissolves fat and cholesterol (emulsification)
Hepatocytes
Liver cells
Peroxisosmes
- Detoxify other poisons including alcohol (found in the liver)
- produces 500-1000 ml bile each day
Gall bladder
stores bile
Pancreas
- Exocrine: secretes digestive enzymes
- Endocrine (Islets of Langerhans): regulates blood sugar
- Secretes lipase
Insulin
Lowers blood sugar
Glucagon
Raises blood sugar
Beri Beri
- caused by thiamin deficiency
- edema (swelling)
- heart failure
Scurvy
- caused by lack of vitamin
- spongy gums
- loose teeth
1940
Basic four