The Digestive System Flashcards Preview

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Flashcards in The Digestive System Deck (10):
1

Digestion Pathway

Oral Cavity-> Pharynx-> Esophagus-> Stomach-> Small Intestine [Duodenum, Jejunem, Ileum]-> Large Intestine-> Rectum-> Anus

2

Mechanical Digestion

The physical breakdown of large food particles into smaller food particles.

Ex. Chewing/Mastication

3

Chemical Digestion

The enzymatic cleavage of chemical bonds.

Ex.
-cleavage of peptide bonds in proteins
-cleavage of glycosidic bonds in starches

4

Intracellular Digestion

The oxidation of glucose and fatty acids to create energy.

5

Extracellular Digestion

Occurs in the lumen of the alimentary canal.

6

Four Accessory Organs of Digestion

Salivary glands, pancreas, liver, gallbladder

7

Enteric Nervous System

Wall of the alimentary canal and controls peristalsis. Activity is up-regulated by the parasympathetic nervous system and down-regulated by the sympathetic nervous system.

8

Question:

What two hormones trigger sensation of thirst and encourage behavior of fluid consumption?

ADH and Aldosterone; both secreted by anterior pituitary

9

Question:

Which two hormones stimulate feelings of hunger?

Glucagon and Ghrelin; secreted by the pancreas and stomach

10

Question:

Which two hormones stimulate the feelings of satiety?

Leptin and Cholecystokinin