Ok Flashcards
(21 cards)
What is the lymphatic system?
An organ system in vertebrates that is part of the immune system and complementary to the circulatory system
It consists of lymphatic vessels, lymph nodes, lymphoid organs, lymphatic tissue, and lymph.
What are the main functions of the lymphatic system?
- Fluid balance
- Absorption
- Immune system support
How does the lymphatic system maintain fluid balance?
It returns excess fluid and proteins from tissues that cannot return through blood vessels.
What role does the lymphatic system play in absorption?
It assists in transporting fat and fat-soluble vitamins through lacteals in the small intestine.
What is chyle?
A milky white fluid formed by the absorption of fats and fat-soluble vitamins in the intestines.
What is the role of lymph nodes in the immune system?
They defend the body from potentially hazardous microorganisms and clear out damaged and cancer cells.
What are T-cells?
A type of white blood cell that matures in the thymus and helps fight off invaders.
What is the function of lymphatic vessels?
They form a complex network throughout the body to transport lymph.
What are the two main lymph ducts in the human body?
- Right lymphatic duct
- Thoracic duct
Where is the spleen located?
In the left hypochondriac region of the abdomen, posterior to the stomach.
What is the structure of the spleen?
A purple, fist-sized organ wrapped by a fibroelastic capsule.
What ligaments connect the spleen to other organs?
- Gastro splenic ligament
- Splenorenal ligament
What are the two surfaces of the spleen?
- Visceral surface
- Diaphragmatic surface
What is lymphadenopathy?
Abnormal lymph nodes that are larger than 1.5 cm in diameter.
What is lymphedema?
Tissue swelling caused by the accumulation of protein-rich fluid due to blocked lymph drainage.
What is the primary treatment for swollen lymph nodes caused by bacterial infection?
Antibiotics
What is the primary arterial supply to the spleen?
The splenic artery.
What is the venous drainage of the spleen?
Through the splenic vein, which combines with the superior mesenteric vein to form the hepatic portal vein.
True or False: The spleen can be palpated in healthy individuals.
False
Fill in the blank: The lymphatic system is responsible for transporting ______ fluid, filtering waste, and producing white blood cells to fight infection.
[lymph]
What is the conclusion regarding the lymphatic system?
It is vital for immune function, fluid balance, and involves key organs like the thymus, lymph nodes, vessels, ducts, tonsils, and the spleen.
