Block 7: The Digestive System

Question 1

Define: Ingestion

Answer 1

consumption via mouth

Question 2

Define: Mastication

Answer 2

chewing

Question 3

Define: Secretion

Answer 3

release of a substance

Question 4

Define: Propulsion

Answer 4

pushing/moving forward

Question 5

Define: Peristalsis

Answer 5

waves of smooth muscle contraction that causes propulsion

Question 6

Define: Mechanical Digestion

Answer 6

breakdown of chunks of food into smaller bits of the same food

no molecular alteration

Question 7

Define: Chemical Digestion

Answer 7

breakdown of macronutrients by enzymes or acids into smaller molecules

Question 8

Define: Absorption

Answer 8

uptake of a substance

Question 9

Define: Defecation

Answer 9

expelling feces from the GI tract

Question 10

Define: Churning

Answer 10

method of mechanical breakdown

Question 11

Define: Deglutition

Answer 11

swallowing

Question 12

Define: Segmentation

Answer 12

mechanical breakdown, mixture, and movement (in both directions) of food into “segments” in the intestines

Question 13

Define: Desiccation

Answer 13

removing water

Question 14

Define: Bolus

Answer 14

rounded mushy lump of food

only in esophagus

Question 15

Define: Chyme

Answer 15

liquified food

only in stomach and small intestine

Question 16

Define: Feces

Answer 16

found in colon