THORAX ABDOMEN AND PELVIS

MEDICAL

RECTUM AND ANUS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which sphincter is located on the superior side of the esophagus?

A	ileocecal
B	lower esophageal
C	pyloric
D	upper esophageal

Explanation:

Detailed explanation-1: -Upper esophageal sphincter (UES) has also been referred to as the inferior pharyngeal sphincter because it is located at the lower end of pharynx and guards the entrance into the esophagus.

Detailed explanation-2: -The lower esophageal sphincters are located underneath the diaphragm, near the bottom of the esophagus, and on top of the stomach.

Detailed explanation-3: -The upper esophageal sphincter (UES) is composed of the cricopharyngeus (CP), thyropharyngeus (TP; inferior pharyngeal constrictor [IPC] in humans), and cranial cervical esophagus.

There is 1 question to complete.