Block 3- GI

Question 1

Motility

Answer 1

action of the muscles of the GI tract that MIX and PROPEL its contents from mouth to anus

Question 2

Peristalsis

Answer 2

involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wavelike movements that push the contents of the canal forward

Question 3

segmentation

Answer 3

segmental rings of contraction chop and mix the ingesta, alternating contraction and relaxation of the longitudinal muscle in the wall of the gut also provides effective mixing of its contents

Question 4

Tonic contractions

Answer 4

constant level of contraction WITHOUT relaxation

1. Lower esophageal
2. Pyloric
3. Ileocecal
4. Internal Anal Sphincters

Question 5

Phasic contractions

Answer 5

Periodic contractions, followed by relaxation

1. Esophagus
2. Gastric antrum
3. Small intestine