Lymphatic System Overview + Lymphatic Vessels

Question 1

lymphatic system composed of

Answer 1

lymphatic vessels + lymphoid organs

Question 2

lymphatic system functions (3)

Answer 2

• takes up excess tissue fluid and returns it to bloodstream
• absorbs fats and releases them to bloodstream
• helps with immune defense

Question 3

lymph

Answer 3

plasma fluid that was forced out of blood capillaries to assist in delivering nutrient to tissues but was NOT reabsorbed into the blood stream

Question 4

lymph circulation pathway

Answer 4

one direction!
lymphatic capillaries –> lymphatic vessels –> L/R lymphatic ducts –> subclavian veins –> superior vena cava –> right atrium

Question 5

lymphatic capillaries

Answer 5

• closely connected to blood capillaries

- take up leftover fluid that becomes lymph

Question 6

lymphatic vessels

Answer 6

• extend through most parts of body
• have one-way flow valves like veins
• move lymph back toward heart via squeezing action of skeletal muscles + one way valves
• merge at left or right lymphatic ducts

Question 7

thoracic duct

Answer 7

• left lymphatic duct
• larger, drains lymph from: legs, abdomen, left thoracic, left arm, left head/neck
• drains to: left subclavian vein

Question 8

right lymphatic duct

Answer 8

• smaller lymphatic duct
• drains lymph from: right arm, right thoracic, right head/neck
• drains to: right subclavian vein