Topic 15: Digestive System - Lymphatic System of Intestines + Lower GI blood

Question 1

What is the immune function of the lymphatic system of intestines?

Answer 1

• lymph nodules in mucosa throughout small and large intestine

Question 2

What does the immune function of the lymphatic system contain?

Answer 2

• Peyer’s patches in ileum

Question 3

What is the function of Peyer’s patches? (2)

Answer 3

• prevent infection of small intestine
• prevent bacteria from entering blood

Question 4

Which part of the lymphatic system aids in the digestive function?

Answer 4

• lymph vessels

Question 5

How do lymph vessels aid in digestion?

Answer 5

• most absorbed fats from small intestine enters lacteals (some into blood)

Question 6

Memorize diagram of digestive function of lymphatic system (5)

Answer 6

1. lacteals
2. collecting lymph vessels
3. cisterna chyli
4. thoracic duct
5. left subclavian vein

Question 7

Please memorize diagram of lower GI Tract blood circulation

Answer 7

Question 8

What is the portal system? (2)

Answer 8

• blood vessels between 2 capillary beds
• but blood does not pass through the heart between them