Podcast
Questions and Answers
What percentage of blood proteins leak out of capillaries daily?
What percentage of blood proteins leak out of capillaries daily?
Where do proteins that leak out of capillaries go?
Where do proteins that leak out of capillaries go?
What happens if lymphatic vessels are blocked?
What happens if lymphatic vessels are blocked?
What is the primary function of the lymphatic system in this context?
What is the primary function of the lymphatic system in this context?
Signup and view all the answers
What is the result of decreased blood protein levels?
What is the result of decreased blood protein levels?
Signup and view all the answers
What is the fate of proteins that leak out of capillaries?
What is the fate of proteins that leak out of capillaries?
Signup and view all the answers
What is the primary function of defense in the body?
What is the primary function of defense in the body?
Signup and view all the answers
What is the role of red blood cells in the body?
What is the role of red blood cells in the body?
Signup and view all the answers
What is the term for the stage in which red blood cells are formed?
What is the term for the stage in which red blood cells are formed?
Signup and view all the answers
What is the relation between the liver and the removal of pathogens from the blood?
What is the relation between the liver and the removal of pathogens from the blood?
Signup and view all the answers
What is the result of the defense system not functioning properly?
What is the result of the defense system not functioning properly?
Signup and view all the answers
What is the primary function of the lymphatic system?
What is the primary function of the lymphatic system?
Signup and view all the answers
What is a characteristic of lymph?
What is a characteristic of lymph?
Signup and view all the answers
How much lymph is handled by the lymphatic system per day?
How much lymph is handled by the lymphatic system per day?
Signup and view all the answers
Where are lymph and lymph vessels absent?
Where are lymph and lymph vessels absent?
Signup and view all the answers
What is the color of lymph?
What is the color of lymph?
Signup and view all the answers
What is the function of the spleen regarding erythrocytes?
What is the function of the spleen regarding erythrocytes?
Signup and view all the answers
What happens to the iron from destroyed erythrocytes?
What happens to the iron from destroyed erythrocytes?
Signup and view all the answers
What is the spleen often referred to as?
What is the spleen often referred to as?
Signup and view all the answers
What is the fate of old and damaged erythrocytes?
What is the fate of old and damaged erythrocytes?
Signup and view all the answers
What is the significance of the spleen in iron metabolism?
What is the significance of the spleen in iron metabolism?
Signup and view all the answers
Where does the lymph get filtered?
Where does the lymph get filtered?
Signup and view all the answers
What is the function of lymphatic capillaries?
What is the function of lymphatic capillaries?
Signup and view all the answers
What is the name of the two major lymphatic ducts?
What is the name of the two major lymphatic ducts?
Signup and view all the answers
Where do the lymphatic trunks merge to form?
Where do the lymphatic trunks merge to form?
Signup and view all the answers
What is the function of lymph nodes in relation to microorganisms and foreign matter?
What is the function of lymph nodes in relation to microorganisms and foreign matter?
Signup and view all the answers
What is the largest of the lymphatic organs?
What is the largest of the lymphatic organs?
Signup and view all the answers
What is the function of the spleen in relation to red blood cells?
What is the function of the spleen in relation to red blood cells?
Signup and view all the answers
What is the location of the spleen?
What is the location of the spleen?
Signup and view all the answers
What is the shape of the spleen?
What is the shape of the spleen?
Signup and view all the answers
What is the function of the lymphatic system in relation to the immune system?
What is the function of the lymphatic system in relation to the immune system?
Signup and view all the answers
Study Notes
Lymphatic System
- Returns large molecules to the blood, ~25-50% of blood
- Proteins leak out of capillaries daily, but cannot get back into capillaries; instead, lymphatic capillaries pick them up and return them to the blood
- If lymphatics are blocked, blood protein decreases, leading to fluid imbalances in the body
General Functions of Lymphatic System
- Major role of WBCs is in body defense
- Lymphatic system screens body fluids, removes pathogens, and damaged cells
Lymph
- Clear, watery fluid resembling blood plasma but with fewer proteins
- Composition varies depending on the organs it drains
- Lymphatic system handles 125 ml/hr (2500-2800 ml of lymph/day), with ~1/2 of this coming from the liver and small intestine alone
Lymphatic Vessels (Lymphatics)
- Originate in tissues as tiny, blind-ended sacs
- Lie side by side with blood capillaries
- Single layer of endothelial cells like blood capillaries, but more permeable to solvents, large solutes, and whole cells
Lymphatic Ducts
- Two major lymphatic ducts: Right Lymphatic Duct and Thoracic Duct
- Right Lymphatic Duct drains upper right quadrant of the body into the right subclavian vein at the junction with the jugular vein
- Thoracic Duct drains the rest of the body (3/4ths), including the left arm, left side of the head, neck, and thorax, and begins just below the diaphragm
Lymph Nodes
- Also called lymph glands
- Oval, varying in size from pinhead to lima bean
- Most numerous of the lymphatic organs
- Functions:
- Cleanse lymph by removing microorganisms and foreign matter
- Alert the immune system to pathogens
- Important in hemopoiesis, producing lymphocytes and monocytes
Major Accessory Lymphatic Organs
- Spleen: largest, located between the stomach and diaphragm, in the left hypochondriac region
- Thymus
- Tonsils
- Peyer's patches
- Appendix
Spleen
- Performs several functions:
- Defense: helps screen blood and removes pathogens and bacteria
- Erythrocyte and platelet destruction: "erythrocyte graveyard" where iron is salvaged from RBCs
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the role of the lymphatic system in returning proteins to the blood, and the consequences of lymphatic blockage on blood protein levels and fluid balance in the body.
