Processes Of The Digestine System Flashcards
Processes of the digestive system
Ingestion
Propulsion
Peristalsis
Segmentation
Mixing of food in the mouth by the tongue
Churning food in the stomach
Segmentation in the small intestine
Mechanical digestion
Enzymes breakdown food molecules into their building blocks
Chemical digestion
Are broken to simple sugars
Carbohydrates
Are broken to amino acids
Protein
Are broekn to fatty acids and alcohols
Fats
Elimination of indigestible substances as feces
Defecation
End products of digestion are absorbed in the blood or lymph
Food must enter mucosal cells and then into blood or lymph capillaries
Absorption
is involved with breaking food down using physical means.
Mechanical digestion
uses chemicals to break down the chemical bonds that hold food molecules together.
Chemical digestion
It means “swallowing”
Deglutition
2 phases of deglutition
Buccal phase
Pharyngeal-esophageal phase
It is regulated by neural and hormonal functions
Gastric juice
It makes the stomack contents very acidic
Hydrochloric acid
An active protein digesting enzyme
Pepsin
