Labels:bulletin board | cell | earth | frisbee | ootid | person | sky OCR: CROSS SECTION OF ESOPHA GUS Outer Inner circular length ways muscle muscle Lumen Lining of the esophagus SECTION through the esophagus shows you that it hollow tube with wall made up of several lay yers Lining this wall are cells called epithelial cells These produce slippery fluid which helps ease pody Mop the esophagus There are also two m uscle lay yers which contract during swallow ing pushing pood towards the stomach layers pooy food toward
(Dorling Kindersley).iso/smdi/anes/anes0d0p.png){kind=small}