exam 2 digestion

4 main tissues

Mucosa

Secretes enzymes and hormones

Protects body from digestive enzyme

Large surface are for optimal digestion

4 main tissues

Submucosa

Transports nutrients

Blood vessels

4 main tissues

Muscle

Propels food through the digestive tract

4 main tissues

Serosa

Protects

Anchors the digestive tract to the body

Mechanical breakdown

Big to small pieces

Physical breakdown of food

Chemical

Saliva breaks down molecular bonds

Digestive enzymes break down bonds

Esophagus, mouth, to stomachache

Peristalsis

contraction and relaxation of muscles propel the food down the esophagus

mouth to stomach to esophagus

Segmentation

Mechanical breakdown of food as peristalsis sends it down

Lower esophageal sphincter

Barrier against the stomach acid

Stomach

4 tissues

Digests proteins fats and oils

Generates chyme

bicarbonate decreases ph

Liver

Produces bile

Pancreas

Releases bicarbonate

Secretes enzymes

Gallbladder

Stores bile

Small intestine-duodenum

Shortest part of the si

Primary site of Chemical digestion

Large intestine

Water absorption

Largest population of gut micro biome

Gut microbiome

Varies at birth

Anti microbial peptides

Regulate microbial activity

Defense against pathogens

Dysbiosis

Microbiome imbalance