GI System Flashcards
GI System also know as
GI Tract
Alimentary Tract
Digestive Tract
Gi System is made up of
Mouth Pharynx Oesophagus Stomach Small Intestine Large Intestine Rectum Anus
Accessory organs of GI System
Teeth Tongue Salivary glands Liver Gall Bladder Pancreas
Types of digestion
Mechanical digestion
Chemical Digestion
Main functions of GI System
Digestion
Absorption
Wall of GI Tract is made up of
Mucosa
Submucosa
Muscularis
Serosa
The Mucosa is made up of?
Epithelium
Lamina Propria
Muscularis Mucosae
The Submucosa is made up of
Connective tissue
Blood vessels
Glands
The Muscularis is made up of
Smooth muscle layers
Inner circular layer - narrows
Outer Longatidual layer - shortens
The Serosa is made up of
The outer layer of the gut
Forms the mesentery - where nerves and blood vessels enter and leave the gut
The mouth is also known as
Oral or Buccal Cavity
The function of the mouth
Mastication
Food mixed with saliva
Tasting food
Food formed into a bolus
Saliva contains
Water 99.5%
Digestive enzymes (amylase and lipase)
Mucus
Ions
Pharynx is a
common passage for food and air
The action of swallowing is known as
Deglutition
