#1 Flashcards
What is the basic function of digestive system?
Secretion, ingestion, digestion , propulsion , absorption, defecation
Gastrointestinal or alimentary canal is ?
continuous tube consisting of oral cavity
Mouth small intestine esophagus pharynx.
accessory organ
help breakdown Food, but Food doesn’t pass there
teeth tongue salivary gland liver gallbladder pancrease
four main layers of alimentary canal
mucosa -inner layer
Submucosa -layer under mucosa
Muscular externa-help push Food smooth muscle
-serosa- outer layer help cover and protect
Small no taste help grip food
filiform
What part of papillae has sensory
fungiform, circumvallate , foliate papillae
buccinotor muscle ( help move chewing )
cheeks
LIPS
Orbicularis muscle and covered with stratified squa. keratized epi
labial frenulum
hold lips together
what are the hard palate
Maxilla , Palatine bone
what are the soft palate
skeletal muscle
prevent Food from entering nasal cavity
uvula
explain teeth
Organ of mechanical digestion
Mastication chewing to increase surface area of food .
Teeth located in bony socket call Maxila mandible alveoli
tongue
skeletal muscle covered with stratified squamous epi
has Paillae
lingual frenulum -hold tongue in place in mouth
Where does
parotid gland located
masseter muscle
submandibular gland
Most saliva
Located in mandible
sublingual gland locate ?
inferior to tongue
Under tongue
function of saliva
lyzome & iA kill bacteria
Chemical
Mechanical
Dissolving food
tongue is what muscle
skeletal muscle with stratified squamous
Oral cavity muscles
stratified squamous with nonkeratinized epi
submucosa
dense irregular CT blood vessels
muscularis externa
SMC
SEROSA
epithelium & CT
mucosa muscle
epithelium & simpler columnar or stratified squamous
/ goblet cells
produce hydrochloric acid
Parietal cell
Submucosal plexus
nerve that help regulate secretions
what does all the Gland in the saliva do?
enzymes water secreted
break down carbohydrates digestion
Salivary amylase
the esophagus connect
pharynx and stomach
pharynx
connect nose & mouth
larynx
throat for breathing talking swallowing
myenteric plexus
Regulate motibilty ( movement)
The stomach has 5 region
CARDIA- received bolus wen LES RELAX
FUNDUS- upper part doomed shape and store gas
body - Largest part
pyloric antrum- lower part and count an glands that secrete mucus
pylorus - connect with duodenum via pyloric sprincter
Rugae
degultition ( swallowing) phase )
Voluntary phases - tongue pushes bolus toward oropharynx
-pharayngeal phase - bolus enter mouth (oropharynx ) and soft palate of epiglottis seal off ( that way we don’t choke while swallowing)
esophageal phase - peristaltic wave move food down esophagus to stomach
defend body from pathogens that can enter nasal or oral cavity
Tonsil
Secrete hormones & stimulate secretions
Enteroendoncrine
There is a mucosa and the esophagus what is a line with
stratified squamous epi / nonkeratinied
The muscularis in the esophagus has 3 muscles
1/3 skeletal
1/3skeletal & smc
1/3- smc
what do esophagus do
Transport bolus from pharynx to stomach
mucosa in stomach
indentation to form gastric pits
stomach is located where
upper left region of abdominal cavity
HORMONES OF pancrease
Insulin & glucacon
salivary function
moisturizing lubricants cleansing oral
