digestive system appendix- rectum and clinical Flashcards
what is the surface epithelium of the appendix?
simple columnar
is there a lamina propria in the appendix?
yes
describe the muscularis mucosae of the appendix?
poorly developed
the appendix has what type of crypts?
short crypts
does the appendix have villi or paneth cells?
no
describe the submucosa of the appendix
thick layer with larger blood vessels and numerous lymph nodules
does the appendix contain serosa or adventitia?
serosa
what is the ME of appendix like?
normal pattern but thin
what are the 2 functions of the appendix
humoral immunity
reservoir for good bacteria
what is the surface epithelium of the colon?
simple columnar
describe the lamina propria of the colon?
typical and has intestinal glands (crypts)
colonocytes
describe the MM of the colon?
typical
what does the mucosa of the colon lack?
villi
paneth cells
describe the muscularis externa of the colon
outer longitudinal muscle is gathered into bands called teniae coli and is continuous
constant tonus of tenaie coli results in sacculations called?
haustra