The lower esophageal sphincter (LES) resting pressure is:
The LES measures 3-4 cm in length and its resting pressure ranges between 15 and 24 mm Hg. At the time of swallowing, the LES relaxes for 5-10 seconds to allow the food bolus to enter the stomach, and then it regains its resting tone
5-10 mm Hg
10-15 mm Hg
15-25 mm Hg
None of the above