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The Lymphatic System
The Lymphatic System
40
Veterinary Medicine
Undergraduate 2
04/20/2013

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Cards

Term
What are the functions of the Lymphatic System?
Definition
- Returns tissue fluid to the circulation
- Filters lymph for damaging material
- Produce antibodies and lymphocytes
- Transport digested fat
Term
What is the lymphatic system responsible for?
Definition
The circulation of Lymph
Term
How is Lymph different to Plasma?
Definition
Lymph contains more lymphocytes and small proteins
Term
What are the main functions of the spleen?
Definition
Storage of blood
Removal of old RBC's
Production of Lymphocytes
Removal of bacteria and foreign material
Term
Is the spleen essential for life?
Definition
No
Term
Where can the Thymus be found?
Definition
In the thorax, cranial to the heart
Term
What is the thymus important for in young animals?
Definition
Lymphocyte production
Term
What happens to the Thymus as the animal ages?
Definition
It Atrophies
Term
Which animal's Thymus does not atrophy and why is this?
Definition
Birds retain a large Thymus as they have little bone marrow
Term
Where can you find the tonsils?
Definition
They form a ring of lymphoid tissue in the pharynx
Term
What do the tonsils provide defense against?
Definition
Infection of the digestive and respiratory tracts and systems
Term
Where are the peyers patches found?
Definition
In the walls of the intestines
Term
What do the peyers patches do?
Definition
Assist with the battle against invading antigens
Term
Where are Lymph nodes found?
Definition
Along the lymph vessels
Term
What is the function of the Lymph Nodes?
Definition
Filter system in the body to trap pathogens
Term
What is each Lymph node surrounded by?
Definition
A fibrous connective tissue capsule
Term
What must happen to all lymph before it is returned to the circulation?
Definition
It must pass through at least one lymph node
Term
What is the indented region called on a lymph node?
Definition
Hilus
Term
What vessel carried the lymph into the node?
Definition
The Afferent Vessels
Term
Which vessel carried the lymph out of the node?
Definition
The Efferent Vessels
Term
What is the lymph node called found under the jaw?
Definition
The submandibular lymph node
Term
Where is the Axillary lymph node found?
Definition
In the armpit
Term
Name the lymph node found in the inguinal region
Definition
The Inguinal lymph node
Term
What is the name of the lymph node found in the tissues of the gastrocenmius muscle?
Definition
Popliteal lymph node
Term
What lymph node is found cranial to the scapula and ventral to the chest?
Definition
Pre Scapular Lymph Node
Term
In which direction does lymph only travel?
Definition
Towards the heart
Term
What structures does the fluid leaked from tissues drain into?
Definition
Lymphatic Capillary
Term
When lymphatic capillaries merge what do they form?
Definition
Lymphatic Ducts
Term
Lymphatic Ducts contain valves, true or false?
Definition
True
Term
What does the right lymphatic duct drain?
Definition
Drains the lymph from the right side of head neck and thorax and right forelimb
Term
Where does the lymph in the right lymphatic duct empty into?
Definition
The right jugular vein
Cranial Vena Cava
Term
What do the tracheal ducts drain and where does it empty into?
Definition
Drains the neck and head and empties into the thoracic duct
Term
Where does the Thoracic duct arise from and what is it called when in this region?
Definition
Arises in the abdomen where it is called the cisterna chyli
Term
What must it pass through to be called the throacic duct?
Definition
Diaphragm
Term
Which veins does the thoracic duct empty into?
Definition
The jugular vein
Cranial Vena Cava
Term
What is a chylothorax?
Definition
When the cisterna chyli ruptures and chyle fills the abdominal space
Term
What is term used for the lymph vessels which are found in the intestinal lining?
Definition
Lacteals
Term
Define: Acquired Immunity
Definition
Immunity acquired by the animal throughout its life
Term
Define: Passive Immunity
Definition
The transfer of antibodies from a donor
Term
Give three examples of plasma proteins
Definition
Albumin
Globulin
Fibrinogen
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