Grand Tour of the Alimentary Canal

Question 1

Functions of digestive system

Answer 1

Digestion
Secretion
Absorption
Motility

Question 2

Mouth

Answer 2

Foodstuffs broken down by chewing

Saliva added as a lubricant

Question 3

Oesophagus

Answer 3

Conduit between mouth and stomach

Question 4

Stomach

Answer 4

Digestion of proteins
Foodstuff reduced to liquidStorage
Sterilisation

Question 5

Pancreas

Answer 5

Digestive enzymes for fats, carbohydrates and proteins

Question 6

Liver

Answer 6

Bile salts for digestion/absorption of fats in small intestine

Question 7

Gall bladder

Answer 7

Stores and concentrates bile

Question 8

Small intestine

Answer 8

Final stages of chemical digestion and nutrient absorption

Question 9

Large intestines

Answer 9

Water absorption, bacterial fermentation and formation of faeces

Question 10

Layers of alimentary canal

Answer 10

Mucosa
Submucosa
Muscularis externa
Serosa/adventitia

Question 11

Mucosa

Answer 11

Epithelium
Lamina propria
Muscularis mucosae

Question 12

Stratified squamous epithelial mucosa

Answer 12

Mouth
Oesophagus
Anal canal

Question 13

Simple columnar epithelial mucosa

Answer 13

Stomach

Small and large intestine

Question 14

Function of epithelium

Answer 14

Acts as a barrier to separate lumen of alimentary canal from the rest of the body
Synthesis and secretion of digestive enzymes, hormones and mucus
Absorbs products of digestion

Question 15

Lamina propria

Answer 15

Loose connective tissue (glands, blood/lymph vessels)

Question 16

Muscularis mucosae

Answer 16

Thin smooth muscle layer