Essential Question

What are the structures of the digestive system?

2.07 Remember the structures of the digestive system 2

Structures of the digestive system

Digestive system

Also known as: Alimentary Canal Digestive Tract Gastrointestinal Tract

Upper GI Lower GI

2.07 Remember the structures of the digestive system 3

Primary structures Mouth (oral cavity) Esophagus (gullet) Stomach Small intestine Large intestine (colon)

Accessory structures Tongue Teeth Salivary glands Pancreas Liver Gall bladder

2.07 Remember the structures of the digestive system 4

Structures of the digestive system

Structures of the digestive system

Mouth (buccal /oral cavity)

Tongue Teeth Salivary Glands Palate Uvula

2.07 Remember the structures of the digestive system 5

Structures of the digestive system

Tongue

2.07 Remember the structures of the digestive system 6

Structures of the digestive system

TeethPrimary (deciduous)

Secondary (permanent)

2.07 Remember the structures of the digestive system 7

Structures of the digestive system

Salivary glands Parotid gland Submandibular gland Sublingual gland

2.07 Remember the structures of the digestive system 8

Structures of the digestive system

Palate Hard Soft

Uvula Flap of skin

hanging in the

back of the throat

2.07 Remember the structures of the digestive system 9

Structures of the digestive system

Pharynx (throat) Nasopharynx Oropharynx Hypopharynx

2.07 Remember the structures of the digestive system 10

Structures of the digestive system

EsophagusFour wall layers

– Mucosa– Submucosa– Muscular– External serous

2.07 Remember the structures of the digestive system 11

Structures of the digestive system

Stomach3 Portions Fundus, Body, Pylorus

2 sphinctersCardiac and Pyloric

4 wall layersMucosa, submucosa, muscular and serous

2.07 Remember the structures of the digestive system 12

Structures of the digestive system

Small intestinesDuodenum

First segment

Jejunum Second segment

Ileum Third segment

2.07 Remember the structures of the digestive system 13

Structures of the digestive system

Accessory OrgansPancreasLiverGall Bladder

2.07 Remember the structures of the digestive system 14

Structures of the digestive system

Large intestine(colon)

2.07 Remember the structures of the digestive system 15

Structures of the digestive system

Check your knowledge…

2.07 Remember the structures of the digestive system 16

Essential Question

What are the structures of the digestive system?

2.07 Remember the structures of the digestive system 17