Ahs 132 Lab Week 12 Digestion

Front 1

Digestive Tract

Back 1

Gastrointestinal tract
where food goes
Mouth
Oropharynx
Esophagus
Stomach
Small intestine
Large intestine (colon)
Rectum
Anus

Front 2

Digestion

Back 2

Mechanical - breaking up food physically by biting, chewing, grinding
Chemical - breaking food down by chemical means

Front 3

Accessory Organs

Back 3

Secrete into the digestive tract
Liver, gall bladder and pancreas secrete into the duodenum
Chemical digestion takes place in the small intestines

Front 4

Accessory Organs

Salivary Glands

Back 4

Salivary glands secrete saliva into themouth
Helps to lubricate food and has enzymes for chemical digestion

Front 5

Digestive System

Back 5

Digestive tract
Accessory organs

Front 6

Oral Cavity

Back 6

Mechanical processing
Moistening
Mixing with salivary secretions

Front 7

Salivary Glands

Back 7

Secretion o f lubricating fluid containing exnzymes that breakdown carbohydrates chemically

Front 8

Liver

Back 8

Secretion of bile - for lipid digestion
Storage of nutrients

Front 9

Gall bladder

Back 9

Storage and concentration of bile

Front 10

Pancreas

Back 10

Exocrine cells - secrete digestive enzymes and buffers
Endocrine cells - secrete hormones (insulin and glucagon)

Front 11

Large Intestines

Back 11

Dehydration and compaction of indigestible material in preparation for elimination

Front 12

Pharynx

Back 12

Muscular propulsion of materials into the esophagus

Front 13

Esophagus

Back 13

Transport of materials to the stomach

Front 14

Stomach

Back 14

Chemical breakdown of materials by acid and enzymes
Mechanical processing through muscular contractions

Front 15

Small Intestines

Back 15

Enzymatic digestion
Absorption of water and nutrients

Front 16

Structure of villus

Back 16

see pg. 879

Front 17

Mouth

Back 17

see pg. 883

Front 18

Salivary glands

Back 18

see pg. 884
Parotid - in front of ear
Sublingual - right under tongue
Submandibular - further down and more posterior than sublingual

Front 19

Teeth

Back 19

see pg. 886

Front 20

Esophagus

Back 20

see pg. 889
Lining of mucosa (inside) is stratified squamous epithelim
then lamina propria
Then muscularis mucosae

Front 21

Stomach

Back 21

Gastric pits - shallow depression that opens into the gastric surface
Base of gastric pit has mucus cells

Front 22

Small Intestine

Back 22

Duodenum
jejunum
Ileum
No rugae - folds are calleed plicae circulares

Front 23

Small Intestines

Villi

Back 23

Mucosa of the small intestines
Increases surface area for absorption
Picture of villus - see pg. 900

Front 24

Pancreas

Back 24

see pg. 902