BIO 282 Lab 6

Digestive System

small intestine histology

lumen: hole in middle

villi: protrusions into lumen

mucosa: surrounds villi, innermost layer

submucosa: connective tissue layer outside of ring of mucosa

muscularis: muscular layer outside submucosa

serosa: outermost layer, whispy collection of cells

extra small intestine histology

know lumen, villi, mucosa, submucosa, muscularis, serosa

large intestine histology

lumen: opening

mucosa: make up villi, innermost layer

goblet cells: found within mucosa, secrete mucus

submucosa: loose connective tissue layer outside mucosa

muscularis: circular and longitudinal muscle outside submucosa

serosa: outermost layer, whispy

extra large intestine histology

know lumen, mucosa, submucosa, muscularis, seroas, goblet cells

liver histology

lobule: separated collection of cells

central vein: on pointer

portal triad: opening on edges of lobule that contains bile duct, hepatic arteriole, and a portal vein

hepatocytes: cells inside lobule

extra liver histology

know lobule, hepatocytes, portal triad, and central vein

pancreas histology

acinar cells: group of darker tightly clustered cells

pancreatic islets: group of loosely connected lighter colored cells

extra pancreas histology

know acinar cells and pancreatic islets

esophagus histology

lumen: small opening running between top and bottom of esophagus

mucosa: innermost layer, coats villi looking structures

submucosa: thin connective tissue layer

muscularis: layer of longitudinal and circular muscle

adventitia(serosa): outermost, whispy layer

extra esophagus histology

know lumen, mucosa, submucosa, muscularis, adventititia

79 (A)

nasopharynx

locate lingual tonsils

locate soft palate

locate uvula

locate pharyngeal tonsil

locate oropharynx

locate palatine tonsil

locate laryngopharynx

locate esophagus

locate teeth, lips, hard palate (above soft palate)

1

hyoid bone

2

esophagus

9

body

8 (top near A)

fundus

1 (to the right of esophagus tube)

cardia

3

pyloric (sphincter between pyloric and duodenum)

27

jejunum

28

ileum

30

ileo-cecal valve

29

cecum

31

vermiform appendix

32

ascending colon

33 (top)

transverse colon

right side of large intestine

descending colon

35

sigmoid colon

what are the folds of the colon called

haustrum

what is the gray band that runs along the colon

tenia coli

36

r3ctum (apparently this is profanity)

37

anal canal

40 (red)

external anal sphincter