Digestive Review - Digestive Review Oral Cavity: Stratified...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Digestive Review Oral Cavity : Stratified sq; multiple mucous glands and serous tongue – posterior part of tongue contains lingual tonsils and other lymph nodules; papillae: a. filiform which are the most numerous, all over tongue but No taste buds; b. fungiform tend to be towards anterior part, few taste buds; c. circumvallate are few in number 8-12, located in posterior aspect; many taste buds on lateral walls, NOTE: many SEROUS GLANDS drain into the “moat” around the base of these circumvallate papillae; this serous secretion keeps the taste buds clean and this serous fluid also contains lipase which digest triglycerides. This lipase continues to work in stomach. These serous glands are called “von Ebner’s” glands. d. for the purist there is a 4 th class of papillae, foliate papillae, which are rudimentary in humans, but may be found on lateral wall of tongue and they do have taste buds. Pharynx: connects oral cavity to esophagus; st. sq (but pseudostratified ciliated in nasopharynx; palatine tonsils in oral pharynx; also many mucous glands. Esophagus: st. sq.; abrupt change to columnar at cardia of stomach; Submucosa mucous glands in esophagus. There may be cardiac like glands in distal esophagus (like the glands in cardia of stomach) but they would lie in the lamina propria and not in submucosa. Muscularis externa: skeletal in proximal part gradually changing to smooth in distal part. So mid part is mixed smooth and skeletal. No
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/08/2011 for the course SCIENCE 3254 taught by Professor Dr.shoupe during the Spring '11 term at Fort Valley State University .

Page1 / 3

Digestive Review - Digestive Review Oral Cavity: Stratified...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online