After identifying the different lymphatic vessels, discuss the relationship existing between the lymphatic and blood capillaries including how the lymph forms and circulates between the two systems. Respond with analysis of 2 other students initial posts.
Student one respond
There are three types of lymphatic vessels:
Initial lymphatics also known as capillaries;
Collecting vessels which transport lymph through lymph nodes; and
Ducts which connect to the subclavian veins (the veins which connect directly to the heart) to return lymph to blood circulation.
Lymphatic vessels form the human body’s secondary circulatory system (the primary system being blood circulation). They extend throughout the body, typically in close association with blood vessels. Most parts of the body through which blood circulates, also have lymphatic vessels which transport lymph. Exceptions include the central nervous system, brain, retina and cornea of the eye, epidermis (skin), hair, nails and cartilage. While there are no lymphatic vessels in the brain or central nervous system, the lymphatic vessels are connected to the neurological system via nerves.
Lymphatic capillaries (also called initial lymphatics) are microscopic vessels which form web-like networks in the interstitial spaces (spaces between body organs and tissues). They are the entry-point of lymph to the lymphatic system and found in the interstitial spaces surrounding most tissues. Lymphatic capillaries are similar in appearance to blood capillaries.
The wall of each lymphatic capillary consists of a single layer of cells which are loosely connected. Cells of the lymphatic capillary walls connect to each other in an arrangement in which they loosely overlap, forming flap-like structures. The flap-like structures have a similar appearance to valves, and are sometimes also called microvalves. Lymphatic capillaries are blind-ended (their ends are closed); however, the flap-like structures of the capillaries walls make the closed ends highly permeable to relatively large molecules, including antigens like viruses and bacteria.
A relation between the blood and the lymphatic system is found through the capillary system, as capillaries and other vessels are present in both systems. The location of blood vessels also signifies the location of lymphatic vessels.
A relation between the blood and the lymphatic system is found through the capillary system, as capillaries and other vessels are present in both systems. The location of blood vessels also signifies the location of lymphatic vessels. Unlike blood vessels, however, lymphatic vessels do not require a pumping action for circulation of fluids. They are capable of distributing fluid without any type of force
REFERENCES
https://socratic.org/questions/what-is-the-relationship-between-lymph-and-blood
Student two respond
The Lymphatic system consist of different parts of the body. The lymph vessels are valved like structures that carry lymph around the body. Lymph nodes are small bean shaped glads that produce lymphocytes, they allow filtration of harmful substances from the tissue and contain macrophages. This allows the cells digestion of harmful debris and pathogens. The thymus is an organ that produces lymphocytes which allows for T cell maturation. And last but not least is the spleen, the sleep disposes of worn out blood cells and provides extra storage for red blood cells.
The biggest difference between the blood capillaries and the lymph capillary is that the lymph capillary is able to move without needed the heart beat to pump this through. But the blood capillaries require a force to make sure they circulate. But the lymph vessels and nodes are not found within the bone or nervous system. Mostly in the cardiac system. The lymph system is not a closed system. They allows the lymph to flow in one direction towards the heart
“Lymphatic System and Immune System: Medical Terminology for Cancer.” CancerIndex,
Boundless. “Boundless Anatomy and Physiology.” Lumen,
