internal surfaces Flashcards
name the three parts of a mucous membrane
the epithelium lining the lumen
the connective tissue - lamina propria
muscularis mucosae - smooth muscle - in alimentary tract
lining of alimentary canal
mucosa
submucosa
external muscle layers
serosa
mucosa of gut wall three layers
epithelium
lamina propria - may have lymphocytes or mucosal gland
muscularis mucosae
submucosa of gut wall composition
connective tissue glands arteries veins nerves not a rigid layer and may have glands that produce secretory products into lumen.
muscular external of gut wall two layers
inner circular layer
outer longitudinal layer - cigar shaped flat nuclei
serosa of gut wall
simple sqamous epithelium called the mesothelium
and a thin layer of connective tissue
maybe arteries, veins and nerves inbetween in mesentery
lining of oesophagus mucosa
epithelium - pseudostratified
lamina propria - loose connectiv etissue with blood and lymph vessels, some smooth muscle and some immune cells.
muscularis mucosae - thin layer of smooth muscle cells
submucosa of oesphagus
connective tissue with mucus secreting glands
muscularis externa of oesophagus
smooth muscle layer
with inner circular layer and outer longitudinal layer
outer surface of oesophagus
adventitia - thin connective tissue
no serosa
lining of stomach
gastric mucosa muscularis mucosae submucosa muscularis externa ruge - foldings
lining of jejunum
jejunal mucosa - simple columnar epithelium, lamina propria, muscular mucosae
submucosa
muscularis externa
permanent plicae circulares with vili and micro vili to increase sa.
lining of large intestine
muscularis muclosea - simple columnar epithelium of the crypts of leiberkuhn lymphoid tissue muscosa submucosa muscularis externa
tracheal wall
epithelium - pseudostraftified ciliated
lamina propria - with elastic fibres
submucosa with seromuscous glands (serous darker stained)
c shaped cartilage
bronchus lining
epithelium - pseudostratified ciliated smooth muscle submucosa wiht glands complete rings of cartilage may see vein/ artery