Image Collection: Medical Anatomy and Illustrations
- All (559)
- Allergic Skin Disorders (31)
- Viral Skin Diseases (26)
- Bacterial Skin Diseases (29)
- Fungal Skin Diseases (17)
- Bites and Infestations (27)
- Noncancerous, Precancerous and Cancerous Tumors (56)
- Diseases of Pigment (26)
- Papules, Scales, Plaques and Eruptions (47)
- Vascular, Lymphatic and Systemic Conditions (48)
- Scalp, Hair and Nails (26)
- Pregnancy Stages (9)
58. Picture of Esophagus
The esophagus is a muscular tube connecting the throat (pharynx) with the stomach. The esophagus is about 8 inches long, and is lined by moist pink tissue called mucosa. The esophagus runs behind the windpipe (trachea) and heart, and in front of the spine. Just before entering the stomach, the esophagus passes through the diaphragm.
The upper esophageal sphincter (UES) is a bundle of muscles at the top of the esophagus. The muscles of the UES are under conscious control, used when breathing, eating, belching, and vomiting. They keep food and secretions from going down the windpipe.
The lower esophageal sphincter (LES) is a bundle of muscles at the low end of the esophagus, where it meets the stomach. When the LES is closed, it prevents acid and stomach contents from traveling backwards from the stomach. The LES muscles are not under voluntary control.
Guide to understanding the Image Gallery categories:
Digestive Disorders Resources
- How to Deal With Side Effects of Medication
- Is It Okay to Take a Stool Softener Every Day?
- The Truth About Food Allergies