PG NEXT Question of the Day 30-10-2016
What is depicted in the following image?
a. Migrating motor complex
b. Phases of deglutition
c. Acid wave form in GERD
d. The recording of action potential in interstitial cells of Cajal
Answer: a. Migratory motor complex
Migrating motor complex (MMC), starts with a quiescent period(phase I), continues with a period of irregular electrical and mechanical activity (phase II), and ends with a burst of regular activity (phase III). The contractions migrate aborally at a rate of about 5 cm/min, and also occur at intervals of approximately 100 min. Gastric secretion, bile flow, and pancreatic secretion increase during each MMC.