Class notes
Biol 1303 Lymphatic System Notes
- Course
- BIOL 1303
- Institution
- University Of Houston - Downtown
This is a comprehensive and detailed note on the lymphatic system for Biol 1303. Enjoy!!
[Show more]
Content preview
Interstitial fluid: About 20 L of fluid filters out of blood capillary walls to form interstitial fluid
Fluid surrounds cells and tissues
Contains less protein than blood plasma (proteins too big to go through capillary walls)
17 L of interstitial fluid is reabsorbed in the venous ends of the capillaries
The remaining 3 L must be returned to cardiovascular system by the lymphatic system
Lymphatic system functions:
Complex drainage system
Interstitial fluid is carried through, empties into the veins and becomes part of
blood plasma
Transports lipids and lipid-soluble vitamins (A,D,E,K) from digestive tract to blood
Lymphatic system slows their entry into blood and allows even dispersion
throughout the body
Contains cells that participate in the immune response
Various types of white blood cells participate in body defense
Lymphatic system components:
Lymph
Lymphatic vessels
Lymphatic tissue structures
Red bone marrow
,Lymphatic vessels:
Begin as lymphatic capillaries
Originate in tissues and carry fluid that forms there
Closed at one end and located between cells
Slightly larger than blood capillaries and permit interstitial fluid to flow into the
vessel, however fluid cannot leave once in vessel
Endothelial cells that compose lymphatic capillary walls overlap like shingles
Lymphatic capillaries unite to form larger lymphatic vessels
Structurally resemble veins
However, walls thinner and more valves than veins
Interstitial fluid entering here is called lymph
Merge to form lymphatic ducts
Lymphatic ducts:
Thoracic duct
Main lymph collecting duct
Receives lymph from several areas
Left side of head, neck, chest
Left upper limb
Entire body under ribs
Right lymphatic duct
Drains lymph from upper right side of body
Lymphoid organs:
Primary lymphatic organs
Sites where stem cells divide and develop into mature T and B cells
Red bone marrow
Thymus
Secondary lymphatic organs and tissues
Most immune responses occur in these areas
Lymph nodes
Spleen
Lymphatic nodules
Lymphatic tissue
Composed of reticular connective tissue containing many lymphocytes
,
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller anyiamgeorge19. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.79. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
56326 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now