Esophageal Sphincter

Q. Regrading Assertion (A) and Reason (R), select the right option
(A) Cardiac sphincter prevents regurgitation.
(R) It prevents re-entry of food from small intestine to stomach.

1. If both (A) and (R) are true and (R) is the correct explanation of (A)
2. If both (A) and (R) are true but (R) is not the correct explanation of (A)
3. If (A) is true, but (R) is false
4. If (A) and (R) are false

Q.

Consider the following four statements and select the incorrect option, stating the ones that are true (T) and the ones that are false (F) :

I. Upper and Lower Esophageal Sphincters work with opposite peristaltic movements.

II. Entry of food into the stomach from the esophagus is mediated by receptive relaxation..

III. Myenteric plexus and Meissner's plexus help in lubrication of the esophagus.

IV. Failure in regulation of flow by Upper Esophageal Sphincter leads to GERD.

1. I.T II. T III.T IV.T
2. I. F II. T III. F IV.T
3. I.T II. F III.T IV. F
4. I.T II. T III.T IV. F