Block 3 Histo of the Gut Flashcards
layers of oral cavity
epithelium (nonkeratinized stratified squamous mucosa), connective tissue (lamina propria, submucosa)
posterior third of tongue has this which is a lymphoid organ
lingual tonsil
anterior 2/3 of tongue has blank on it
papillae
mucus glands stain blank
lightly
two types of papillae
filiform, fungiform
filiform papillae function to blank food
scrape
fungiform papillae contain blank and look like a blank
taste buds, mushroom
blank papillae also have taste buds
circumvallate
tongue layers
epithelium, ct, muscle
proprioceptor that holds tooth in alveolar bone
periodontal ligament
these make enamel during tooth development
amyloblasts
amyloblasts blank after eruption
die
odontoblasts blank after eruption
are fine
mucosa is derived from blank and is made of blank cells
endoderm, epithelial columnar
beneath mucosa is the blank which is a ct and allows for blood supply by diffusion into the mucosa
lamina propria (submucosa)
layers around gut`
mucosa, submucosa, muscularis externa, adventitia/serosa
mucosa functions to promote digestion by blank
enzymatic secretion
small intestine absorbs blank
food nutrients
large intestine absorbs blank
water, electrolytes
small intestine to rectum has blank cells which secretes mucus
goblet cells
only organ that has surface columnar cells secreting mucus
stomach
production of hormones by blank cells in the gut
enteroendocrine
the blank is the largest endocrine gland
gut
epithelium of the mucosa forms a blank between what is in the blank and blank
barrier, lumen, body
blank nodules are common in the submucosa
lymphoid
blank occur in the submucosa of the esophagus and duodenum
glands
most places only have glands in the blank not the blank
mucosa, submucosa
submucosa also has the blank which has postganglionic parasympathetics
meissners plexus (submucosal plexus)
this is located between inner circular and outer longitudinal layers of muscularis externa and has postganglionic parasympathetics for peristalsis
myenteric plexus (auerbachs plexus)
esophagus has upper 1/3 blank muscle
skeletal
esophagus has middle 1/3 blank muscle
mixed
esophagus has lower 1/3 blank muscle
smooth
cardiac region and the body of the stomach has a blank layer of muscle which is unique
oblique
cardiac region and the body of stomach has these layers of muscles
circular (middle), longitudinal (outer), oblique (inner)
pylorus has a thickened blank layer of muscle to form the pyloric sphincter
circular
large intestine has an outer longitudinal band of muscle that is incomplete which forms three bands called blank
taenia coli
anal canal has an inner circular layer of smooth muscle that forms the blank and is thickened
internal anal sphincter
the blank is made of skeletal muscle and is voluntary
external anal sphincter
serosa is aka the blank
visceral peritoneum
adventitia and ct with no squamous epithelium is located in the blank and blank
esophagus, rectum
this contains fibrous connectie tissue with arteries, veins, nerves, glands in the esophagus
submucosa
part of esophagus that is fibrous connective tissue sheatht that binds the esophagus to the trachea
adventitia
fundus/body of stomach has blank pits and blank glands
short, long
mucous neck cell secrete blank
PGs
mucous neck cell requires a blank stain
PAS
mucous is a blank
carbohydrate
neck of the gland also contains blank cells
undifferentiated stem cells
parietal stains blank and are located at blank of gland
not very well, top
chief cells are located at the blank of the gland
bottom
enteroendocrine cells are located at blank of gland
bottom
parietal cells secrete blank and intrinsic factor (aka blank)
HCl, vitamin b12
chief cells secrete this
pepsinogen
pepsinogen initiates blank digestion in the blank
protein, stomach
enteroendocrine cells secrete small blank
polypeptide hormones
pylorus of the stomach has blank pits and blank glands and the base of the glands is blank stained
long, short, lightly
surface lining cells and glands of the pylorus are blank positive
PAS
blank and blank cells are present in the pyloric glands
mucous, enteroendocrine
muscularis externa in the cardiac region and body has blank layers
3
muscularis externa at pyloric sphincter has these layers
circular, longitudinal
SI three ways of increasing surface area
plicae circulares, villi, microvilli
two layers that make up a plicae circulares
mucosa, submucosa
microvilli are formed from blank filaments and are anchored in the blank
actin, terminal web
unique cell of SI that is involved in immune function by producing lysozymes to break down bacterial cell walls
paneth cells
si cell type that tells lymph nodule whats coming into the lumen like little sensors
M cells
this is in the core of the villus and contains ct, small vessels, lymphatics/lacteals, and many plasma cells
lamina propria
the submucosa is different in the blank than these two because the submucosa of the duodenum has blank
duodenum, jejunum/ileum, glands
these glands of the duodenum produce alkaline mucus for buffering
brunner cells
in the ileum, there are many lymphoid nodules in the lamina propria and submucosa called blank
peyer’s patches
there are blank glands within the mucosa of the large intestine and there are no plicae, villi, and very few microvilli
simple tubular
duodenum to colon has an exponential increase in blank cells
goblet
goblet cells make blank
mucus
in large intestine, there are many blank in the lamina propria
macrophages
modified muscularis externa of the large intestine that has three bands
taenia coli
25% of cells in the gut are blank cells (GALT)
lymphoid