Monogastric Digestive System: Pig

Question 1

1. Digestion starts in the mouth

Answer 1

• Tongue
• Teeth
• Salivary Amylase: enzyme useful for digestion starting in mouth. Enzymatic digestion

Question 2

2. Esophagus

Answer 2

• Tube like structure
• Peristaltic movement: Esophagus pushes food down in the stomach

Question 3

3. Stomach

Answer 3

• Very muscular
• pH in the stomach is acidic (1-2)

Question 4

3. Stomach: What are the functions

Answer 4

1. Storage of ingested food
2. Physical breakdown of feed
3. Secretes digestive juices

Question 5

3. Stomach: What are the regions?

Answer 5

1. Esophageal
2. Cardiac: mucus for stomach lining
3. Fundic: HCL, Pepsinogen
4. Pyloric region: Mucus, enzymes

Question 6

4. Small Intestine structures

Answer 6

1. Duodenum
2. Jejunum
3. Illeum
4. Villi

Question 7

4. Small Intestine: What is the function of the duodenum?

Answer 7

1. Receives secretions from the pancreas: pancreatic juices containing enzymes
2. Receives secretions from the Liver: bile stored in gall bladder. Bile salts are for emulsification of fats
3. **Active site of digestion

Question 8

4. Small Intestine: What is the function of the jejunum?

Answer 8

1. **Active site of nutrient absorption

Question 9

4. Small Intestine: What is the function of the Illeum?

Answer 9

1. Nutrient absorption

Question 10

4. Small Intestine: What is the function of villi?

Answer 10

1. Line intestinal wall
2. Increase absorption capacity of the small intestine
3. pH in small intestine is alkaline (6-7)
4. One things that DECREASES absorption is the ability of the animal to digest the feed in the duodenum
5. Another thin INCREASING the rate of passage: grinding feed too fine

Question 11

5. Large Intestine structures

Answer 11

1. Cecum
2. Colon
3. Rectum
4. Anus

Question 12

5. Large Intestine Functions

Answer 12

1. Stores undigested food
2. Bacterial fermentation: stink
3. Very little nutrient absorption
4. Some water absorption
5. Mineral absorption