The Lymphatic System Flashcards
______ vessels carry interstitial fluid and return it to the blood.
Lymphatic
_____ transport absorbed fats to the circulation.
Lacteals
Put the following in the order of a lymphatic pathway: collecting duct lymph node subclavian vein afferent lymphatic vessel lymphatic capillary efferent lymphatic vessel lymphatic trunk
lymphatic capillary afferent lymphatic vessel lymph node efferent lymphatic vessel lymphatic trunk collecting duct subclavian vein
Lymphatic capillaries have walls made up of __ layer of ____ cells.
1
epithelial
Interstitial fluid within a lymphatic capillary is called ___
lymph
Lymphatic vessels have ____ to prevent backflow of blood.
valves
______ ______ pass through lymph nodes and merge to form lymphatic trunks.
Lymphatic vessels
______ ______ empty into collecting ducts.
Lymphatic trunks
There are 2 collecting ducts - name them
right lymphatic duct
thoracic duct
What does the right lymphatic duct drain and what does it empty into?
Drains - right side of head and neck, right arm and right thorax
empties into - right subclavian vein
What does the thoracic duct drain and what does it empty into?
much larger …
Drains - rest of the body
empties into - left subclavian vein
How does tissue fluid get forced into lymphatic capillaries?
By hydrostatic pressure
What are the functions of lymph? (2)
Returns small substances back to the blood
Transports foreign particles to the lymph nodes for distruction.
Lymph moves through lymphatic vessels by… (3)
skeletal muscle contraction
pressure changes due to breathing
contraction of smooth muscle in vessel walls
Lymphatic tissue contains ____ , _____ and other cells.
lymphocytes
macrophages
What are the 3 encapsulated lymphatic organs?
Lymph nodes
Thymus gland
Spleen
Lymph nodes are located along _____ _____
lymphatic vessels
What is the function of lymph nodes?
Lymphocytes and macrophages within lymph nodes filter the lymph as it flows through and remove pathogens.
Lymph nodes are centres of _____ production
Lymphocyte
Lymph enters lymph nodes through _____ lymphatic vessels and leaves through _____ lymphatic vessels
afferent
efferent
Blood vessels, nerves and lymphatic vessels enter and exit through the ____ of the lymph node
hilum
Lymph nodes are not found in the _____ nervous system
central
The thymus gland is located behind the _____
Sternum
The thymus gland is divided into ______ containing ______.
Lobules
lymphocytes
Some lymphocytes produced in the thymus gland mature into T lymphocytes dye to the hormone ______
Thymosis
The _____ is the largest lymphatic organ
spleen
The spleen is located in …
the upper left abdominal cavity
The spleen is composed of ____ ____ and ____ _____
white pulp
red pulp
The white pulp of the spleen contains _____
lymphocytes
The red pulp of the spleen contains ____ , _____ and ______
RBCs
macrophages
lymphocytes
What is the function of the spleen?
Filters blood, removes damaged blood cells and bacteria
