Lymphatic System Revision Flashcards
Name the two main ducts found in the lymphatic system
Right lymphatic duct and the thoracic duct
List the functions of the lymphatic system
- Return excess fluid from peripheral tissue to the venous system
- Produce antibodies
- Remove unwanted materials
- Produce lymphocytes
- Absorb digested fats in villi of intestines
What is the main function of a lymph node ?
To cleanse or filter the lymph
Name the types of lymphatic organs and tissue
Tonsil, Adenoids, Peyers Patches, Thymus, Spleen
How much of the body’s fluid is returned to the lymphatic system each day?
10% or 3-4 litres
Name the type of products that pass through the lymphatic capillary walls
Proteins, Viruses, and Bacteria
How does the lymphatic system prevent the back flow of lymph
Cup shaped valves
What is the colour of lymph?
Straw coloured
How would you describe the lymphatic system?
The lymphatic system can be described as a second circulatory system that collects excess fluid and waste that the blood is unable to take from the cells , filtering it before returning back to the blood
Four areas of the body drained by the right lymphatic duct include:
Right arm, head, neck and chest
Where is lymph found?
Fluid between the cells
Which one of the following best describes a lymph node?
A small bean-shaped gland
What one of the following functions relates to lymph?
a. Destroy bacteria
b. Strengthen capillary walls
c. Help build new cells
d. Change into leucocytes
Destroy bacteria
Which one of the following contains lymphatic tissue?
a. Pineal gland
b. Thyroid gland
c. Parathyroid gland
d. Thymus gland
Thymus gland
The two main lymphatic ducts are the ‘right lymphatic duct’ and the:
Thoracic duct
Which of the following is not a function of the lymphatic system?
a. To produce lymphocytes
b. To pass digested fats from the intestine
c. To filter foreign matter through the nodes
d. To increase oxygen to vital organs
To increase oxygen to vital organs
Which one of the following blood vessels do the two lymph ducts drain into?
a. Submandibular veins
b. Subclavian veins
c. Jugular vein
d. Axillary veins
Subclavian veins
Describe the process of capillary exchange
Plasma in the blood seeps through the capillary wall
Plasma now becomes tissue fluid.
Tissue fluid provides the cells with nutrients and oxygen
Tissue fluid passes into the lymphatic capillary.
Tissue fluid now becomes lymph.
How does the lymphatic system distributes fluid in the body?
Lymphatic vessels drain away approximately 3 litres of excess tissue fluid daily.
Lymph fluid is similar in composition to blood [_____].
Plasma
What is the function of lymphocytes, leucocytes in lymph fluid?
To ingest bacteria and cell debris
Where would you not find lymph capillaries?
The central nervous system (CNS)
Name the vessel that transports lymph to the node:
Afferent vessel ( A - Arrival)
Name the vessel that transports filtered lymph back to the system:
Efferent vessel (E - Exit)
Which lymphatic duct empties into the right subclavian vein to rejoin the circulatory system?
Right lymphatic duct
Which lymphatic duct empties into the left subclavian vein to rejoin the circulatory system?
Thoracic duct
How does lymoh move around the body?
- One-way valves
- Muscular contraction
- Arterial pulsation
- Breathing
- Hydrostatic pressure on the tissues
- Intrinsic action of sooth muscle in larger lymphatic vessels
- Pressure gradients in the tissues
