Digestive System,Diana Trevino,Period 6

Layer of the GI Tract

Mucosa- Most inner layer also known as mucus memebrane

Muscularis and Muscular layer- 2nd to last most exterior

Outer longitudinal layer-condense intestine

Submucosa- 2nd inner layer

Inner Circular layer-squeeze,decrease size of lumen

Submucosal Plexus- in submucosa

Mucus Membrane -constructs mucus for reduction and protection

Serosa- outer covering of the GI tract

Surfaces of the Stomach

Cardiac region- close by heart

Regions-

Fundus- dome,shaped,filled with gas

Pyloric sphincter-power food leaving stomach and entering small intestine

Body- head portion

Pylorus-funnel shaped end

Functions of the Digestive System

removes solid food waste

GI tract- passage for food

Digest food

Accessory Organ- Grant secretions such as enzymes

Absorbs nutrients

Aids breakdown food

Major Organs of Digestive System

Small intestine extending from pyloric sphincter to ieocecal valve.Also chemical digestion of fat begins

Large Intestine- absorption of water and electroytes

Esophagus- collapsible tube travels from the pharynx to stomach

Liver- largest gland in body, made of 4 lobes

Mouth- opening into oral cavity

Gall Bladder- pear-shaped organ

Stomach- Pinpoint at the left of the abdominal cavity in left hypochondriac region

Pancreas- detected behind stomach surrounded by duodenum

Anus-Banish feces from rectum to exterior

Location and Absorption of each Macromlecule

Carbohydrates- Revealed in the pancreas

Proteins- pinpointed all around your body,hair,muscles,bone,skin etc.

Macromlecule- Accommodate many atoms

Lipids- detected in many parts- cell membrane,cholesterol,blood cells,brain

Digestive Enzymes

Amylases- break down carbs as starch into simple sugars

Lipases- collapses fat into 3 fatty acids

Pepsin- collapse proteins into polypeptides

Trypsin- Assist us digest protein

Proteases-collapses protein within smaller peptides

Nucleases- chains of nucleotide in nucleic acids into the smaller unit

Digestive Enzymes- collapse enzymes thus down polmeric marcomolecules as smaller building blocks

Cymotryspin- collapses proteins in the small intestine