Digestive System Flashcards
palate
forms the roof of the mouth - 3 parts
Hard palate - roof of mouth with special mucous membranes
soft palate - closes off nasal passage while swallowing
uvula- hangs from edge of soft palate for snoring and some speech sounds
papillae
small bumps on tongue that some contain taste buds
dentition
natural teeth arranged in the upper and lower jaws
occlusion (dentistry)
any contact between the chewing surfaces of upper and lower teeth
lower epsophageal sphincter
muscular ring between the stomach and the esophagus- relaxes during swallowing to allow food into stomach
stomach
sac like organ composed of the
- fundus (upper, rounded part)
- body (main part)
- antrum (lower part)
Rugae
folds in the mucosa lining of the stomach that allow it to change size
gastric juices
enzymes and hydrochloric acid aid in beginning of food digestion
pyloric sphincter
ring like muscle at base of stomach- controls flow of partially digested food from the stomach to the duodenum of small intestine
pylorus
narrow passage connecting stomach and small intestine
duodenum
first portion of the small intestine - from pyloric sphincter to jejunum
jejunum
middle portion of small intestine - from duodenum to ileum
ileum
last and longest portion of small intestine - from jejunum to cecum of large intestine
small intestine
coiled organ where nutrients are absorbed into blood stream and food digested
large intestine
waste products are processed - from small intestine to anus
cecum
pouch that lies on the right side of the abdomen- part of large intestine
ileocecal sphincter
ring like muscle that controls flow from the ileum into the cecum
vermiform appendix
hangs from lower portion of cecum
colon
longest portion of the large intestine, has 4 parts
- ascending colon
- transverse colon
- descending colon
- sigmoid colon- s shaped and joins rectum
rectum
las 4 inches of large intestine, widest division of large intestine and ends at anus
anus
lower opening of the digestive tract
liver
largest organ- removes toxins from blood and turns food into fuel and nutrients
glucogen
form of glucose stored in liver and muscles that is reverted back into glucose by liver when blood sugar is low
bilirubin
pigment excreted into digestive fluid, yellow or green
bile
digestive juice secreted by liver in the digestion of fat, concentrated and stored in gallbladder
biliary tree
provides channels thru bile is transported from liver to small intestine
gallbladder
pear shaped organ that stores and concentrates bile
pancreas
gland that secretes pancreatic juices aid in digestion and contain digestive enzymes and sodium bicarbonate to help neutralize stomach acid
anaboloism
building up of body cells and substances from nutrients
catabolism
breaking down of body cells or substances releasing energy and CO2
villi
finger-like projections that line the small intestine- contains blood vessels and lacteals to absorb nutrients into blood stream and fats/fat soluble vitamins (lacteals transport these vis lymphatic system)
peristalsis
series of wave-like contractions of smooth muscles that moves food forward
borborygmus
rumbling noise caused by gas moving in intestine
aphthous ulcers
canker sores
cheilosis
disorder of the lips characterized by crack like sores and corners of mouth
leukoplakia
white, usually benign lesion on tongue or inside of mouth that develop due to chronic irritation
trismus
any restriction to the opening of the mouth caused by trauma , surgery or radiation
dental caries
cavity - infectious disease caused by bacteria that destroy the enamel and dentin of tooth
edentulous
without teeth - after natural permanent teeth are lost
periodontal disease
inflammation of the tissues that surround and support the teeth
dental calulus
tartar- dental plaque that has calcified and irritate the surrounding tissue
acute necrotizing ulcerative gingivitis
abnormal growth of bacteria that causes progressive inflammation, bleeding, deep ulceration and death of gum tissue
eosinophilic esophagitis
chronic immune system disease in which eosinophil white blood cells build up in esophagus, usually due to a food allergy, causing inflammation making it difficult to swallow
Barrett’s esophagus
cells in the epithelial tissue of esophagus are damaged by chronic exposure to acid
stricture
abnormal narrowing of a bodily passage
pyrosis
heartburn
esophageal varices
enlarged and swollen veins at the lower end of the esophagus
hiatal hernia
anatomical abnormality in which a portion of the stomach protrudes upward thru diaphragm
gastroparesis
muscles of the stomach slow down and work poorly or not at all, preventing stomach from emptying normally
gastrorrhea
excessive secretion of gastric juice or mucus
peptic ulcers
sore of mucous membranes of digestive system
cachexia
physical wasting away due to illness - its are eating but body unable to absorb enough nutrients
areophagia
e swallowing of air while eating or drinking causing gas in stomach
eructation
burping
diverticulosis
abnormal number of diverticulum in colon
ileus
partial or complete blockage of the small or large intestine cause by stopping the peristalsis of this area of intestine
ulcerative colitis
chronic condition with repeated episodes of inflammation in the rectum and large intestine cause ulcers and irritation
Crohn’s disease
chronic autoimmune disease that is usually found in ileum and colon and perpetrates every layer of tissue of affected area causing swelling and scarring
volvulus
twisting of the intestine on itself causing obstruction
intussusception
telescoping of one part of the small intestine into the opening of an immediately adjacent part
inguinal hernia
protrusion of a small loop of bowels through a weak place in the lower abdominal wall or groin
strangulated hernia
portion of intestine is constricted inside the hernia, causing ischemia by cutting off blood supply
clostridium difficile
c. diff
bacterial infection usually in older adults in hospital settings following use of antibiotics that wipe out competing bacteria
rectocele
bulging of the front of the rectum into the vagina, usually a result of pregnancy or childbirth
hematochezia
bright red blood in stool- lower intestinal tract
melena
black, tarry would smelling stools cause by digested blood - bleeding in upper GI tract
steatorrhea
excess fat in stool
ascites
accumulation of watery fluid (serous) in the peritoneal cavity usually from liver disease and puts pressure on liver’s blood vessels
cirrhosis
chronic liver degenerative disease characterized by scarring filled with fat
gallstone
hard deposit formed in the gallstone and bile ducts due to the concretion of bile components
cholelithiasis
presence of gallstones
proton pump inhibitors
decrease amount of acid produced by stomach - for GERD pts
antiemetic
med to relieve/prevent vomiting
anastomosis
surgical connection between 2 hollow or tubular structures
proctopexy
surgical fixation of a fallen or droopy (prolapsed) rectum to an adjacent tissue or organ