MOD 4 Gastroenterology Flashcards
Gastroenterology
Gastr/o- stomach
enter/o- intestine
-logy the study of
GI
gastrointestinal
-al… pertaining to
Alimentary canal
aliment/o- food; nourishment
-ary… pertaining to
another name for the gastrointestinal system
gustatory cortex
Information of taste is sent to the gustatory cortex of the brain.
gustat/o- the sense of taste
-ory … having the function of
Salivary glands
- Parotid glands
- Sublingual glands
- Submandibular glands
mastication
mastic/o- chewing
-ation… a process; being or having
Deglutition
Swallowing.
(dee-gloo-TISH-un)
degluti/o- swallowing
-tion… a process
Pharyngeal
pharyng/o- pharynx (throat)
-eal… pertaining to
A passageway for food as well as for inhaled and exhaled air.
Peristalsis
a process of coordinated contraction that moves food
peri- around
stal/o- contraction
-sis… process; condition
The four region of the stomach
- cardia
- fundus
- body
- pylorus
Rugae
deep folds in the lining of the stomach that expands as stomach is filled with food.
Chyme
pronounced: KIME
semisolid mixture of partially digested food, saliva, digestive enzymes, and fluids of the stomach.
The three parts of the small intestine
- duodenum
- jejunum
- ileum
Duodenum
(doo-oh-DEE-num)
10-inch, C-shaped segment that begins at the stomach and ends at the jejunum.
Jejunum
8-foot segment that twists and turns in the adbominal cavity.
(jeh-JOO-num)
ileum
12-foot segment that absorbs nutrients is completed.
Villi
(VIL-eye)
thousands of small, thin structures that project into the lumen (central, open area) and increases the amount of surface area to maximize the absorption of food nutrients and water thru the intestinal wall and into the blood.
Large intestine consts of…
- the cecum (SEE-kum)
- the colon
- rectum
- anus
haustra
puckered pouches on the walls of the large intestine that can greatly expand as needed. Water is absorbed thru the intestinal wall and into the blood.
colon
longest part of the large intestine. It travles thru all 4 quadrants of the abdomen.
- Ascending colon
- Transverse colon
- Decending colon
- Sigmoid colon
peritoneum
(pair-ih-toh-NEE-um)
double-layer serous membrane. one layer lines the walls of the abdominopelvic cavity. the other layer surounds each of the organs.
peritoneal fluid
watery fluid that fills spaces between the organs and allows them to slide past each other during movements of digestion
omentum
Supports the stomach and hangs down as a fatty apron to cover and protect the small intestine.
mesentery/mesenteric
a thicki, fan-shaped sheet that supports the jejunum and ileum.
meso- middle
enter/o- intestine
-ic… pertaining to
celiac trunk
an artery of the abodominal aorta. largest artery in the body. supplies blood to abdominal organs.
celi/o- abdomen
-ac… pertaining to
hepatocytes
(heh-PAT-ik)
liver cells that produce bile
hepat/o- liver
-cyte… cell
Bile
yellow-green, bitter-tasting, thick fluid. combo of bile acids, mucus, fluid, and bilirubin and biliverdin
gallbladder
dark green sac posterior to the liver. stores bile from the liver.
pancreas
yellow gland posterior to the stomach. food in the duodenum causes pancrease to secrete digestive enzymes.
also functions as an organ of the endocrine system
cholecystokinin
(Koh-lee-sis-toh-KY-nin)
cholecyst/o- gallbladder
kin/o- movement
-in…a substance
hormone that stiumlates gallbladder to contract and reliease bile.
emulsification
the process of breaking down of fat
emulsific/o- droplets of fat suspended in a liquid
HCL
hyrdochloric acid. breaks down food fibers and converts pepsinogen to the digestive enzyme pepsin, and kills microorganisms in food
pepsinogen
inactive substance converted to pepsin, a digestive enzyme that breaks down protein foods
peps/o- digestion
-in… a substance
gastrin
a hormone that stiumlates the release of more hydrochloric acid and pepsinogen
amylase
enzyme that continues the digestion of carbs that was begun by amylase in the saliva. breaks carbs down into sugar and food fibers
amyl/o- carbohydrate;starch
-ase… enzyme