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Digestive System | Jillian Ramirez Period 6 - Coggle Diagram
Digestive System | Jillian Ramirez Period 6
Major Functions
breaks down food
occurs chemically and mechanically
takes broken down food into body to be used for energy
Major Organs
mouth
mechanical and chemical digestion
esophogus
connects pharynx to stomach
peristalsis is performed here to move food along
no digestion
stomach
cardiac region
near heart
associated with 'heartburn'
fundus
where gas is held
dome shaped
body
main portion
contains hydrochloric acid
4.pylorus
funnel end
pyloric sphinctor
controls food leaving stomach into the duodenum
small intestine
duodenum
first portion
attached to stomach
chemical digestion
shortest and widest
jejunum
middle portion
main site of nutrient absporption
ileum
end portion
connected to cecum(beginning of LI)
villi increase the surface area for greater absorption
large intestine
cecum
ascending colon
transverse
descending colon
sigmoid colon
rectum
anus
absorption of water and electrolytes
pharynx
aka, the throat
specifically, the oropharynx is for food
Digestive Organs
Location of Digestive and Absorption of Each Macromolecule
Layers of the GI Tract
mucosa
actually comes in contact w/ food
produces mucus to help food travel better
epithelium
non-keratinized stratified squamous in mouth,esophagus, and anus for friction protection
simple columnar in intestine for absorption and secretion(from goblet cells)
lamina propria
areolar connective tissue
has blood and lymphatic vessels and nodes for nourishment and immunity
muscularis mucosae
two thin layers of smooth muscles
villi also help move food
submucosa
below the mucosa
muscularis of muscular layer
in charge of peristalsis and segmentation
serosa
thinnest layer; outermost layer
Disorders of the Digestive System