GastroIntestinal System Flashcards
MOUTH consist of?
HARD PALATE
SOFT PALATE
UVULA
ORAL CAVITY
TONGUE
forms its anterior roof; involved in PHONATION
HARD PALATE
a fleshy fingerlike projection of the soft palate; swallowing
UVULA
forms its posterior roof; aids in
phonation and proper breathing and
swallowing
SOFT PALATE
Tear and grind food, breaking it down into smaller
fragments
TEETH
second set of teeth that enlarge and develop
PERMANENT TEETH
first set that begin to erupt around 6 months
MILK TEETH/ DECIDUOUS TEETH
A baby has full set (20 teeth) by age of 2 years.
MILK TEETH/ DECIDUOUS TEETH
fanglike for tearing or piercing
CANINE
First teeth to appear
LOWER CENTRAL INCISORS
emerge between 17- 25 years old
THIRD MOLARS
CLASSIFICATION OF TEETH
INCISORS
CANINE
MOLARS AND PREMOLARS
Atropine SO4 (anticholinergics):
decreases saliva
production
chisel- shaped adapted for cutting
INCISORS
product of the salivary glands, a mixture of mucus and
serous fluids
SALIVA
have broad crowns with rounded tips suited for
grinding
MOLARS AND PREMOLARS
lubricates food
SALIVA
antibodies in saliva
lysosomes (IgA)
Least understood antibody
IgD
large amount of mucus membranes in
the GI tract and in respiratory system
IgA
Most abundant antibodies; respond to bacterial and viral infections
IgG
First antibody to react in case of an
infection (viral/bacterial)
IgM
posterior end of the oral cavity which are paired
masses of lymphatic tissue
PALATINE TONSILS
Parasitic and allergic reactions
IgE
moistens and helps to bind food together into a mass called a bolus which makes chewing and swallowing easier
MUCUS
food in the stomach:
Chyme
area contained by the teeth
ORAL CAVITY
an enzyme contained in the clear serous portion
which begins the process of starch digestion in the mouth
SALIVARY AMYLASE
occupies the floor of the mouth
TONGUE
Compartment of Waldeyer’s Ring
PALATINE TONSILS
first line defense against infection
Waldeyer’s Ring
Food from the mouth passes posteriorly into
oropharynx and laryngopharynx, both of which
are common passageways for food, fluids and
air.
PHARYNX
About 25 cm (10 inches) long
ESOPHAGUS
a passageway that conducts food from the pharynx to the stomach
ESOPHAGUS/GULLET
The distal end of the esophagus is guarded by
lower esophageal sphincter
It is also known as cardiac sphincter
lower esophageal sphincter
FUNCTION: lower esophageal sphincter
prevents backflow of food into the esophagus
prevents gastric reflux.
prevent regurgitation
Backward flow of gastric contents into the
esophagus; Due to inappropriate relaxations of the LES
GERD/ Reflux Esophagitis
RISK FACTORS: GERD
§ Nicotine (cigarette smoking)
§ High fat foods
§ Xanthine-derivatives (theophylline, caffeine)
§ Ganglionic stimulants
§ Beta adrenergic agents
§ Elevated estrogen /progesterone levels
NURSING INTERVENTION: GERD
o Antacids
o Histamine blockers
o Bethanecol
o Reglan
o Small freuqnet feedings
o Fluid with meals
o Eat slowly and chew food thoroughly
o Avoid very hot or cold foods, spices, alcohol,
coffee, chocolates, citrus juices, eating and
drinking 3 hours before retiring at night
o Elevate HOB 6-8 inches
o Weight reduction (obese)
o Avoid tobacco, salicylates, phenylbutazone
o Avoid lying down after meals
SURGICAL MANAGEMENT: GERD
Nissen fundoplication
a flap of cartilage over the top of the larynx,
keeps food out of the larynx during swallowing
EPIGLOTTIS
EPIGLOTTIS OPEN:
Speaking
EPIGLOTTIS CLOSED:
Swallowing
C-shaped located on the left side of the
abdominal cavity
STOMACH
Approximately 25 cm (10 inches) long
STOMACH
It can hold about 4 liters of Food (1 gallon)
STOMACH
Acts as a temporary “storage tank” for food as
well as a site for food breakdown.
STOMACH
REGIONS OF THE STOMACH
FBP
expanded part of the stomach lateral to the
cardiac region; To store gas produced during digestion
FUNDUS
midportion region of the stomach
BODY