2 07 Remember the structures of the digestive

2. 07 Remember the structures of the digestive system

Warm up Using your vocabulary list, define the following words 1. Buccal Cavity 2. Alimentary Canal 3. Gallbladder 4. Pylorus 5. Uvula 6. Palate 7. Cardiac Sphincter 8. Salivary Glands 9. Pancreas 10. Vermiform Appendix

Essential Question What are the structures of the digestive system? 2. 07 Remember the structures of the digestive system 3

Structures of the digestive system Digestive system q Also known as: n n n Alimentary Canal Digestive Tract Gastrointestinal Tract q q n Upper GI Lower GI Approximately 30’ in length from mouth to anus 2. 07 Remember the structures of the digestive system 4

Structures of the digestive system Primary structures q q q Mouth Esophagus Stomach Small intestines Large intestines Accessory structures q q q Tongue Teeth Salivary glands Pancreas Liver Gall bladder 2. 07 Remember the structures of the digestive system 5

Mouth/ Buccal Cavity

Structures of the digestive system Mouth n (buccal cavity) q q q Tongue Teeth Salivary Glands Palate Uvula 2. 07 Remember the structures of the digestive system 7

Structures of the digestive system Tongue q q q Attached to floor of mouth- 4 -5 inches long Made of skeletal muscle attached to four bones Taste buds on the surface n Sweet n Sour n Bitter n Salty 2. 07 Remember the structures of the digestive system 8

Structures of the digestive system Teeth q Primary (deciduous) n q 20 “baby teeth” Secondary (permanent) n 32 “adult teeth” 2. 07 Remember the structures of the digestive system 9

Structures of the digestive system n Salivary glands q Parotid gland n q q Largest salivary gland Submandibular gland Sublingual gland 2. 07 Remember the structures of the digestive system 10

Structures of the digestive system Palate- roof of mouth q q Hard Soft Uvula q Flap of skin hanging in the back of the throat 2. 07 Remember the structures of the digestive system 11

Structures of the digestive system n Pharynx (throat) q q Nasopharynx Oropharynx Hypopharynx Approx. 5 inches long 2. 07 Remember the structures of the digestive system 12

Structures of the digestive system n Esophagus Muscular tube, 10” long q Connects the pharynx and stomach Esophageal wall layers – Mucosa – Submucosa – Muscular – External serous q n 2. 07 Remember the structures of the digestive system 13

Structures of the digestive system n Stomach Upper left quadrant of the abdominal cavity Three Sections n Fundus n Body n Pylorus n q q q Cardiac Sphincter Pyloric Sphincter Rugae- Folds in stomach- allows stomach to expand 2. 07 Remember the structures of the digestive system 14

Structures of the digestive system n Small intestines- 3 Segments q Duodenum n n q Jejunum n n q First segment 12” long Second segment 8’ long Ileum n n Third segment 10 -12’ long 2. 07 Remember the structures of the digestive system 15

Structures of the digestive system Large intestines 3 Segments. Cecum Colon n Ascending Colon n Transverse Colon n Descending Colon n Approximately 2” in diameter q 5’ long Rectum q Anus q Anal Sphincter q 2. 07 Remember the structures of the digestive system 16

Structures of the digestive system Accessory Organs n Pancreas q q n Liver q q q n Secretes digestive enzymes Located behind stomach Largest organ of body Connects to gall bladder and small intestine by ducts Located in the right upper abdominal quadrant Gall Bladder q Stores and concentrates bile until needed by body 2. 07 Remember the structures of the digestive system 17

Structures of the digestive system … e g d e l w o n C k r u o y k c e h 2. 07 Remember the structures of the digestive system 18

Processing n n Labeling Activities 1&2 Digestive system game- research your given digestive structure in the book beginning on page 522. Be ready to tell about your structure when it is your turn.

Essential Question What are the structures of the digestive system? 2. 07 Remember the structures of the digestive system 20