Digestive Flashcards
Breaks down food you eat into nutrients needed for metabolic processes and rids body of materials that cannot be used
Digestive system
Performs whole digestive process/ also called GI tract
Alimentary canal
Mouth, pharynx, esophagus, stomach, small and large Intestines
Organs of alimentary system
what helps to regulate the
mobility and secretory activity
of GI tract organs.
submucosal & myenteric
moist membrane
innermost layer
lines the hollow cavity- lumen
consist of:
-surface ephithelium
-smooth muscle layer
Mucosa
soft connective tissue
contains:
-blood & lymphatic vessels
-nerve endings
-mucosa-associated lymphoid tissue (MALT)
Submucosa
made up of smooth muscle cells
consists of:
-inner circular layer
-outer longitudinal layer
Muscularis externa
outermost layer
has a single layer of flat serous fluid
producing cells
pair/ half of the visceral peritoneum
serosa
oral cavity
Mouth
passageway of food, fluid, air
Pharynx
gullet
Esophagus
C-shaped organ
Stomach
Four main layers of the stomach
Mucosa, submucosa, serosa, muscularis externa
Primary site for digestion and
nutrient absorption.
Small Intestines
3 subdivisions of small intestine?
Duodenum, jejunum, ileum
Starting point of the large intestine/ connected to small intestine
Cecum
The largest part with four
sections, ascending, transverse,
descending, and sigmoid colon;
absorbs water and salts.
Colon
Stores feces before
elimination.
Rectum
The final opening where
waste exits the body.
Anus
Absorbs water and
electrolytes from undigested
food.
Large intestine
support the digestive system by
producing and storing substances
that help break down food.
Accessory digestive organs
Teeth and Tongue
Salivary Glands
Pancreas
Liver
Gallbladder
Accessory organs
GASTROINTESTINAL
PROCESSES
Ingestion
Propulsion
Mechanical Breakdown
Digestion
Absorption
Defecation
Food is actively and voluntarily placed into
the mouth.
This is the first step in the digestive
process.
Ingestion