Lymphatics I

Question 1

What are the two vascular networks in the body?

Answer 1

• Blood vessels

- Lymphatic vessels

Question 2

What is are the function of blood vessels?

Answer 2

They deliver nutrients and immune cells to the tissues.

Question 3

What are the functions of lymphatic vessels?

Answer 3

• Collect the secreted fluid from tissues.
• Filter lymph
• Return lymph to circulation

Question 4

Where do cardiovascular and lymphatic systems arise from?

Answer 4

• The two system have the same origin but separate during embryonic development.

Question 5

What are the 2 main functions of the lymphatic system?

Answer 5

• Maintain homeostasis

- Immunologic regulation

Question 6

How does the lymphatic system help maintain homeostasis?

Answer 6

It helps maintain homeostasis in two ways:

• Fluid management
• Transportation of fats

Question 7

How does lymphatic system manage fluid?

Answer 7

It returns fluid from interstitial tissues back to vascular system (2 liters/day)

Question 8

How does lymphatic system transport fat?

Answer 8

• Fat is collected by lymphatic vessels in the intestine called Lacteals which will then transport lipid into lymph fluid (chyle)
• Lipids are then transported to the blood via thoracic duct and sent to the liver for processing.

Question 9

What is the immunologic role of the lymphatic system?

Answer 9

• It acts as a barrier and filter to reduce and eliminate foreign agents.

Question 10

What are the types of lymph organs?

Answer 10

- Primary lymph organs:
  \+ Red bone marrow
  \+ Thymus
- Secondary lymph organs
  \+ Lymph nodes
  \+ Spleen