Question

Match List-I with List-II
\begin{tabular{ll} List-I (Motility Pattern/Electrical activity) & List-II (Interpretation)
(A) MAPC (Migrating Action Potential Complex) & (I) Housekeeper motility pattern during interdigestive period
(B) MSB (Migrating Spike Burst) & (II) Electrical signal in small intestine during parasitic infection
(C) MMC (Migrating Myoelectric Complex) & (III) Stationary mixing contraction in the large intestine/colon
(D) Haustration & (IV) Causes giant contractions in the colon

Choose the correct answer from the options given below:

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
• (A) - (IV), (B) - (II), (C) - (I), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

The "housekeeper of the gut" is the classic textbook definition for the Migrating Myoelectric Complex (MMC). Identifying this link (C-I) immediately eliminates two of the options.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The gastrointestinal tract exhibits coordinated patterns of electrical and mechanical activity to mix and propel food through the gut.

Step 2: Detailed Explanation:
Let us match each gastrointestinal motility pattern with its description:
- (C) MMC (Migrating Myoelectric Complex): This is a wave of electrical activity that sweeps through the small intestine during fasting (interdigestive) periods. It acts as a "housekeeper" to clear out undigested food and bacteria, matching with (I).
- (D) Haustration: These are slow, segmenting, mixing contractions that occur in the large intestine (especially the colon), creating sac-like pouches called haustra. This matches with (III).
- (B) MSB (Migrating Spike Burst): This is an abnormal pattern of electrical activity seen during intestinal infections or parasite infestations (such as *Trichinella spiralis*), which triggers hypermotility to help expel the parasites. This matches with (II).
- (A) MAPC (Migrating Action Potential Complex): These are intense, coordinated electrical complexes associated with strong, long-distance peristaltic movements (giant migrating contractions) in the colon, often causing rapid clearance and diarrhea. This matches with (IV).
Combining these matches: (A)-(IV), (B)-(II), (C)-(I), (D)-(III).

Step 3: Final Answer:
The correct matching sequence is (A) - (IV), (B) - (II), (C) - (I), (D) - (III), corresponding to Option (C).