Digestive Flashcards
1
Q
Enteric Nervous System
A
nervous system of the gut
2
Q
Gastric pits vs. rugae
A
- Gastric pits=microscopic, only includes mucosa
- Rugae=much larger, can be seen with the naked eye, includes all layers of stomach (mucosa, submucosa, muscularis, serosa)
3
Q
Muscular layers of stomach (order from outer to inner)
A
outer longitudinal
middle circular
inner oblique
4
Q
Serosa vs. Adventitia
A
- Serosa=there is a peritoneum
- Adventitia=no peritoneum (ex: esophagus)
5
Q
Parts of stomach
A
Cardia (near esophagus)
Fundus
Body
Pylorus
6
Q
Parts of pylorus region
A
Antrum-waiting room
Canal
7
Q
Duodenum
A
- absorptive cells, goblet cells, granular cells, endocrine cells
- microvilli and many folds
- contains bile (important for fat digestion) and pancreatic ducts
8
Q
Jejunum
A
absorbs nutrients
9
Q
Villi vs microvilli
A
- Villi: much larger than microvilli, composed of many cells
- Microvilli: projection off of ONE cell (can have lots of microvilli on the same cell), increase surface area for absorption
10
Q
Peyer’s patches
A
small patches of lymphatic tissue (immune cells) found throughout the ileum
11
Q
Taenia coli
A
longitudinal ribbons of smooth muscle on the outside of the ascending, transverse, descending and sigmoid colons
12
Q
Anal canal
A
- takes food 18-24hrs to pass through
- feces is product of water, indigestible food and microbes
- MICROBES SYNTHESIZE VITAMIN K (this vit. K is absorbed by the colon)
13
Q
Porta
A
gate where blood vessels, ducts, nerves enter and exit (liver)
14
Q
Lobes of liver
A
right (largest), left, caudate, quadrate
15
Q
Lobule
A
- basic structure of liver
- hexagon shaped
- each has portal triad (hepatic duct, hepatic artery, hepatic portal vein)
- filters blood
