Human Biology- Digestive System

What are the functions of GI Tract ?

• Ingestion

• motility

• digestion

outermost layer of GI tract

Intrinsic (enteric plexus) consists of

• sympathetic nerves

• parasympathetic nerves

• Meissner's plexus

• Myenteric plexus

The cells in gastric gland

• Parietal cells

• Mucous cells

• Goblet cells

• Intrinsic factor

function of saliva

What is the secretion of parietal cells ?

• HCl

• Mucus

• Gastrin

• Intrinsic factor

3 stages of catabolism

• Digestion

• conversion

• energy production

• secretion

What is the enzyme that were found in the epithelium cells lining the ileum ?

• pancreatic amylase

• amylase

• membrane bound disaccharides

• lactase

What is alimentary canal ?

What is ingestion ?

• taking food into the digestive tract

• alternating waves of constriction and relaxation of muscles in the organ walls

• series of catabolic steps which the enzymes is secreted into the lumen of alimentary canal

• eliminate the indigestible substances from the body