Chapter 24 - Digestive System Flashcards
Chapter 24 - Digestive System
what are other names of the digestive system
digestive tract
gastrointestinal tract (GI tract)
alimentary tract
Chapter 24 - Digestive System
organs of dig system are collectively called
accessory organs
Chapter 24 - Digestive System
what are the accessory organs
glands teeth liver gallbladder pancreas appendix
Chapter 24 - Digestive System
overall functions of dig sys
absorption
energy
affecting temperature
exocrine function
Chapter 24 - Digestive System
what does dig sys absorb
nutrients vitamins minerals water drugs/medication
Chapter 24 - Digestive System
what energy is associated with dig sys
ATP, fats, protein
Chapter 24 - Digestive System
ATP via ________ is absorbed
carbohydrated
Chapter 24 - Digestive System
how does dig sys affect temperature
cold/hot drinks
Chapter 24 - Digestive System
mouth to anus
alimentary canal
Chapter 24 - Digestive System
route food takes in alimentary canal
mouth pharynx (oro-) esophagus stomach small intestines large intestines (colon) rectum anus
Chapter 24 - Digestive System
when food starts in the mouth it becomes
bolus
Chapter 24 - Digestive System
bolus goes through ________ and arrives at the stomach
segmentation
Chapter 24 - Digestive System
when bolus leaves stomach it becomes ________
chime
Chapter 24 - Digestive System
________ is smooth muscle contraction that moves the bolus and chime throughout the tract
peristalsis
Chapter 24 - Digestive System
the ________ contains the visceral and parietal
peritoneum
Chapter 24 - Digestive System
the ________ aligns organs
visceral
Chapter 24 - Digestive System
the ________ aligns cavities
parietal
Chapter 24 - Digestive System
________ attach to the abdominal organs
mesenteries
Chapter 24 - Digestive System
the mesenteries are double sheets of
peritoneal membrane
Chapter 24 - Digestive System
________ covers the surface of the intestines anteriorly
greater omentum
Chapter 24 - Digestive System
greater omentum is
fatty skin
Chapter 24 - Digestive System
________ stabilizes the stomach
lesser omentum
Chapter 24 - Digestive System
________ is a sheet in back that’s attack to colon
mesocolon
Chapter 24 - Digestive System
how many layers of tissue in alimentary canal
4
Chapter 24 - Digestive System
what are layers of alimentary canal tissue
mucosa
submucosa
muscularis
serosa
Chapter 24 - Digestive System
are the layers consistent throughout the canal
no
Chapter 24 - Digestive System
what is the surface layer of canal tissue
mucosa
Chapter 24 - Digestive System
the ________ contains the musclaris mucosa
lamina propria
Chapter 24 - Digestive System
muscularis mucosa includes inner and outer
muscles
Chapter 24 - Digestive System
inner muscles are
circular
Chapter 24 - Digestive System
outer muscles are
longitudinal
Chapter 24 - Digestive System
the ________ tends to be innervated
submucosa
Chapter 24 - Digestive System
________ are found in the submucosa
submucosal plexus
Chapter 24 - Digestive System
another name for submucosal plexus
Meissner’s plexus
Chapter 24 - Digestive System
externa musclaris contains
inner and outer muscles
Chapter 24 - Digestive System
the externa musclaris is innervated with
myenteric plexus
Chapter 24 - Digestive System
another name for myenteric plexus
plexus of Auerbach
Chapter 24 - Digestive System
serosa is called ________ in oral cavity, pharynx, esophagus and rectum
adventitia
Chapter 24 - Digestive System
oral cavity also called
buccal cavity
Chapter 24 - Digestive System
oral cavity consists of
lips
gums
uvula
fauces
Chapter 24 - Digestive System
________= lips
labia
Chapter 24 - Digestive System
________=gums
gingival
Chapter 24 - Digestive System
________ helps prevent food from prematurely entering the pharynx
uvula
Chapter 24 - Digestive System
what are fauces
passageways between mouth and oropharynx
Chapter 24 - Digestive System
________=tongue
glossa
Chapter 24 - Digestive System
types of muscle in tongue
intrinsic
extrinsic
Chapter 24 - Digestive System
tongue has ________ and ________
body
root
Chapter 24 - Digestive System
what connects tongue to floor of oral cavity
frenulum
Chapter 24 - Digestive System
what is frenulum made of
thin fold of mucous membrane
Chapter 24 - Digestive System
what cranial nerves are associated with tongut
hypoglossal NXII
facial NVII
glossopharyngeal NIX
Chapter 24 - Digestive System
what does hypoglossal nerve do
muscle movement
Chapter 24 - Digestive System
what does glossopharyngeal nerve do
taste
Chapter 24 - Digestive System
list of salivary glands
sublingual
submandibular
parotid
Chapter 24 - Digestive System
what does sublingual salivary gland do
buffer and lubricate
Chapter 24 - Digestive System
what % of saliva is sublingual
5%
Chapter 24 - Digestive System
function of submandibular salivary gland
nucins & salivary amylase
Chapter 24 - Digestive System
what is % of saliva is submandibular
70%
Chapter 24 - Digestive System
what is function of parotid salivary gland
salivary amylase
Chapter 24 - Digestive System
what % of saliva is parotid
25%
Chapter 24 - Digestive System
saliva consists of ________ water
99.4%
Chapter 24 - Digestive System
.6% of saliva is
mucins/buffers
IgA
lysozymes
Chapter 24 - Digestive System
________ is an enzyme which breaks down some carbohydrates
salivary amylase
Chapter 24 - Digestive System
What targets salivary glands, especially the parotid
mumps
Chapter 24 - Digestive System
which enzyme has defensive qualities
lysozyme
Chapter 24 - Digestive System
________= permanent teeth
secondary dentition
Chapter 24 - Digestive System
how many adult permanent teet
32
Chapter 24 - Digestive System
________= primary dentition
deciduous
Chapter 24 - Digestive System
children have ________ deciduous teet
20
Chapter 24 - Digestive System
teeth include:
incisors
cuspids
bicupsids
molars
Chapter 24 - Digestive System
incisors=
bladed
Chapter 24 - Digestive System
cuspids=
canines
Chapter 24 - Digestive System
bicuspids=
premolars
Chapter 24 - Digestive System
molars=
crush and grind
Chapter 24 - Digestive System
parts of tooth
crown
neck
root
Chapter 24 - Digestive System
crown of tooth contains
enamel
dentin
pulp
Chapter 24 - Digestive System
neck of tooth surrounded by
gingival
Chapter 24 - Digestive System
root of tooth contains
root canal
cementum
peridontal ligament
Chapter 24 - Digestive System
chewing is called
mastication
Chapter 24 - Digestive System
parts of the pharynx involved with dig sys
oropharynx
laryngopharynx
Chapter 24 - Digestive System
pharynx is aligned with ________muscles
constrictor
Chapter 24 - Digestive System
what sends bolus to esophagus
constrictor muscles
Chapter 24 - Digestive System
length of esophagus
1 ft
Chapter 24 - Digestive System
diameter of esophagus
2 cm
Chapter 24 - Digestive System
location of esophagus
posterior of cricoid cartilage to about C6
Chapter 24 - Digestive System
________ is an opening in the diaphragm allowing esophagus to pass through
sophageal hiatus
Chapter 24 - Digestive System
protrusion through diaphragm at hiatus
hiatal hernia
Chapter 24 - Digestive System
esophagus contains
upper and lower esophageal sphincter muscles
Chapter 24 - Digestive System
what do esophageal sphincter muscles do
controls amount of bolus passes through
Chapter 24 - Digestive System
________ is condition where have trouble with closing of sphincter in esophagus
GERD or acid reflux
Chapter 24 - Digestive System
________ = swallowing
deglutition
Chapter 24 - Digestive System
phases of deglutition
buccal
pharyngeal
esophageal
Chapter 24 - Digestive System
where is swallowing reflex stimulated
pharygneal phase
Chapter 24 - Digestive System
where is control of swallowing
medulla oblongata
Chapter 24 - Digestive System
primary peristalsis occurs via
vagus and glossopharyngeal nerves
Chapter 24 - Digestive System
secondary peristalsis occurs where
locally
Chapter 24 - Digestive System
when would secondary peristalsis occur
dryness or poor lubrication
Chapter 24 - Digestive System
stomach functions include
food storage during meal
mechanical breakdown of food during churning
chemical breakdown of food
intrinsic facotr
Chapter 24 - Digestive System
how does stomach break food down chemically
pH (HCL)
enzymes
Chapter 24 - Digestive System
what is intrinsic factor involved with in the stomach
vitamin b12 absorption
Chapter 24 - Digestive System
after the bolus enters the ________ it becomes ________
stomach
juicy chyme
Chapter 24 - Digestive System
where is chyme eventually released and how
duodenum via the pyloric sphincter
Chapter 24 - Digestive System
regions of stomach
cardia
fundus
body
pylorus
Chapter 24 - Digestive System
stomach is vascularized by many arteries including
gastric artery
Chapter 24 - Digestive System
most superior region of stomach
fundus