chapter 5 Flashcards
digestive system
the digestive has 4 main functions:
-ingestion
-digestion
-absorption
-elimination
ingestion
food material taken into mouth
digestion
food is broken down, mechanically and chemically, as it travels the gastrointestinal tract
absorption
digested food passes into the bloodstream through lining cells of small intestines
elimination
the body eliminates solid waste materials that cannot be absorbed into bloodstream
major parts of the oral cavity are:
-cheeks, lips, hard & soft palate, rugae, uvula
-tongue, papillae, tonsils, gums, teeth & pharynx
anatomical terms of a tooth:
-crown, root, enamel, dentin, pulp
-gingiva, cementum, root canal & periodontal membrane
deglutition (swallowing) system
-nasal cavity, pharynx, bolus of food, epiglottis
-larynx, esophagus, trachea
lower parts of the stomach:
-lower esophageal sphincter(LES)
-fundus
-greater & lesser curvature
-rugae
-body
-antrum
-pylorus
-pyloric sphincter
anatomical terms for digestive tract
-esophagus, stomach, duodenum, liver, gallbladder
-pancreas, jejunum, ileum, cecum, appendix
-ascending, transverse, descending & sigmoid colon
-rectum & anus
parts of the large intestines
-cecum, appendix, rectum & anus
-ascending, transverse, descending & sigmoid colon
parts of the small intestines
-jejunum, ileum, duodenum
parts of the biliary system
-liver, gallbladder, pancreas, duodenum
-common bile duct, pancreatic duct, cystic duct
amino acids
small building blocks of proteins, released when proteins are digested
amylase
enzyme secreted by pancreas and salivary glands to digest starch
anus
terminal end/opening of digestive tract to outside the body
appendix
blind pouch hanging from cecum
bile
-digestive juice made in the liver and stored in the gallbladder
-breaks up large fat globules, composed of bile pigments, cholesterol, and bile salts
bilirubin
pigment release by liver in bile (brown)
bowel
intestines
canine teeth(cuspids/eyeteeth)
pointed, dog-like teeth next to the incisors
cecum
first part of large intestine
colon
consists of ascending, transverse, descending, & sigmoid segments
common bile duct
carries bile from the liver and gallbladder to the duodenum (choledochus)
defecation
elimination of waste from the digestive tract through the anus
deglutition
swallowing
dentin
-primary material found in teeth
-covered in enamel in the crown and a protective layer of cementum in the root
duodenum
first part of the small intestine(12 inches long)
emulsification
physical process of breaking up large fat globules into smaller globules
enamel
hard, outermost layer of tooth
enzyme
chemical that speeds up the reactions substances
esophagus
tube connecting throat to stomach
fatty acids
-substances provided when fats are digested
-category of lipids
feces/stool
solid waste
gallbladder
small sac under the liver that stores bile
glucose
simple sugar
glycogen
-starch
-glucose stored in the form of glycogen in liver cells
hydrochloric acid
substance produced in the stomach, necessary for digestion of food
ileum
third part of small intestine
incisor
one of four front teeth in the dental arch
insulin
hormone produced by endocrine cells in pancreas, transport sugars from the blood into cells and stimulates glycogen formation by the liver
jejunum
second part of small intestine
lipase
pancreatic enzyme needed to digest fat
liver
-large organ located in the RUQ of the abdomen
-secretes bile, stores sugars, iron & vitamins
-produces blood proteins, destroys worn-out RBCs, filters out toxins, weighs 2 1/2 to 3 pounds
lower esophageal sphincter (LES)
ring of muscles between esophagus and stomach
mastication
chewing
molar teeth
sixth, seventh, & eighth teeth from the middle or either side of the dental arch
palate
roof of mouth
pancreas
-organ behind the stomach
-produces insulin and enzymes
papillae (singular: papilla)
small, projections on the tongue
parotid gland
salivary gland within the cheek
peristalsis
rhythmic contraction of the tubular organs
pharynx
-throat
-common passageway for food from the mouth & for air from the nose
portal vein
large vein bringing blood to the liver from the intestines
protease
enzyme that digests protein
pulp
soft tissue within a tooth, containing nerves and blood vessels
pyloric sphincter
-ring of muscle at the end of the stomach near the duodenum
-opens when peristalsis passes over it
pylorus
distal region of the stomach and opening to the duodenum
rectum
-last section of the large intestine
-connects the end of colon to the anus
rugae
ridges on the hard palate and the wall of the stomach
saliva
-digestive juice produced by salivary glands
-contains the enzyme amylase
what are the 3 salivary glands
parotid, sublinguial and submandibular glands
sigmoid colon
-fourth and last colon
-S-shaped segment of the colon just before the rectum
-empties into the rectum
sphincter
a circular ring of muscle that constricts a passage or closes a natural opening
stomach
muscular organ that receives food from esophagus
triglycerides
-fat molecules are composed of three parts fatty acid and one part glycerol
-subgroup of lipids
uvula
soft tissue hanging from the middle of the soft palate
villi (singular: villus)
microscopic projections in the wall of the small intestine that absorb nutrients into the bloodstream
an/o
anus
append/o & appendic/o
appendix
bucc/o
cheek
cec/o
cecum
celi/o
belly, abdomen
cheil/o
lip
cholecyst/o
gallbladder
choledoch/o
common bile duct
col/o & colon/o
colon
dent/i
tooth
duoden/o
duodenum
enter/o
intestines, usually small intestine
esophag/o
esophagus
faci/o
face
gastr/o
stomach
gloss/o
tongue
hepat/o
liver
ile/o
ileum
jejun/o
jejunum
labi/o
lips
mandibul/o
mandible
lapar/o
abdomen
lingu/o
tongue
odont/o
tooth
or/o
mouth
palat/o
palate
pancreat/o
pancreas
peritone/o
peritoneum
pharyng/o
pharynx
proct/o
anus & rectum
pylor/o
pyloric sphincter
rect/o
rectum
sialaden/o
salivary gland
sigmoid/o
sigmoid colon
stomat/o
mouth
uvul/o
uvula
amyl/o
starch
bil/i
gall & bile
bilirubin/o
bilirubin (bile pigment)
chol/e
gall & bile
chlorhydro/o
hydrochloric acid
gluc/o & glyc/o
sugar
glycogen/o
glycogen, animal starch
lip/o
fat
lith/o
stone
prote/o
protein
py/o
pus
sial/o
saliva, salivary gland
steat/o
fat
-ase
enzyme
-iasis
abnormal condition
-prandial
meal
anastomoses
-three types: end to end, end to side & side to side
-example of an enteroenterostomy: a surgical creation of a new opening between those parts of the body
anorexia
lack of appetite
ascites
abnormal accumulation of fluid in the abdomen
borborygmi (singular: borborygmus)
rumbling or gurgling noises produced by the movement of gas, fluid, or both in the GI tract
constipation
difficulty in passing stools
diarrhea
frequent passage of loose, watery stools
dysphagia
difficulty swallowing
eructation
gas expelled from the stomach through the mouth (burp)
flatus
gas through anus (fart)
hematochezia
passage of fresh, bright red blood from the rectum
jaundice (icterus)
yellow- orange coloration of the skin and white of eyes caused by high levels of bilirubin in the blood
melena
black, tarry stools due to feces containing digested blood
nausea
unpleasant sensation in the stomach with a tendency to vomit
steatorrhea
fat in the feces, frothy, foul-smelling fecal matter
aphthous stomatitis
inflammation of the mouth, with small painful ulcers
dental caries
tooth decay
herpetic stomatitis
inflammation of the mouth by infection with herpes virus
oral leukoplakia
white plagues or patches
periodontal disease
inflammation and degeneration of the gums, teeth and surrounding bone
achalasia
failure of the lower esophagus sphincter (LES) muscle to relax
esophageal cancer
malignant tumor of the esophagus
gastric carcinoma
malignant tumor of the stomach
esophageal varices
swollen, varicose veins at the lower end of the esophagus
gastroesophageal reflux disease (GERD)
solids and fluids return to mouth from stomach (heartburn)
peptic ulcer
open sore or lesion of the mucous membrane of the stomach or duodenum
hernia
protrusion of an organ or part of the muscle normally containing it
anal fistula
abnormal tubelike passageway near anus
colonic polyposis
polyps protrude from the mucous membrane of colon
colorectal cancer
adenocarcinoma of the colon or rectum or both
crohn disease
chronic inflammation of the intestinal tract
diverticulosis
abnormal side pockets (outpouchings) in the intestinal wall
dysentry
painful, inflamed intestines
hemorrhoids
swollen, twisted, varicose veins in the rectal region
ileus
failure of peristalsis with resulting obstruction of the intestines
inflammatory bowel disease (IBD)
inflammation of the colon and small intestines
intussusception
telescoping of the intestines
irritable bowel syndrome (IBS)
group of gastrointestinal symptoms associated with stress and tension
ulcerative colitis
chronic inflammation of the colon with presence of ulcers
volvulus
twisting of the intestines on itself
cirrhosis
chronic degenerative disease of liver
hepatocellular carcinoma (HCC)
liver cancer
pancreatic cancer
malignant tumor of the pancreas
pancreatitis
inflammation of pancreas
viral hepatitis
inflammation of liver caused by a virus
cholelithiasis
gallstones in gallbladder
salivary gland near the ear
parotid
removal of the salivary gland
sialadenecectomy
pertaining to the throat
pharyngeal
hernia of rectum
rectocele
enlargement of liver
hepatomegaly
surgical repair of the roof of mouth
palatoplasty
after meals
postprandial
visual examination of the anal and rectal region
proctoscopy
study of the cause of disease
etiology
incision of the common bile duct
choledochotomy
new opening between the common bile duct and jejunum
choledochojejunostomy
treats order of the anus and rectum
proctologist
performs root canal therapy
endodontist
operates on the intestinal tract
colorectal surgeon
pertaining to administration of medicines and fluid other than by mouth
parenteral
fan-like membrane that connects the small intestine to the abdominal wall
mesentery
new surgical connection between structures or organs
anastomosis
protrusion of the upper stomach through the diaphragm
hiatal hernia
chronic inflammation of the colon with destruction of it’s inner surface
ulcerative colitis
calculi in the gallbladder
cholecystolithiasis
achlorhydria
absence of acid in the stomach