Arteries Veins Arteries Veins Throughout your body you

Arteries Veins

Arteries Veins

§ Throughout your body, you have other vessels that like ”dead ends”. They have little valves that take in the interstitial fluid that surrounds them. § These are called lymphatic vessels. § The fluid inside is called lymph.

§ These lymphatic vessels are interwoven with capillaries. The lymphatic system runs throughout the body.

§ The lymphatic system collects and transports waste products and drains them into the circulatory system, near the vena cava.

§ The lymphatic system collects and transports waste products and drains them into the circulatory system, near the vena cava. § Lymph flows in an open circuit, and is sent through vessels by the contraction of muscles that surround the vessels (there is no pumping mechanism like in the cardiovascular system). § Like veins (but not like arteries), lymphatic vessels have valves to prevent backflow. § Lymph has a notable amount of white blood cells.

§ Lymphatic capillaries is where interstitial fluid is absorbed. § It moves everywhere through the body through lymphatic vessels. § It then passes through lymph nodes, which are enlarged areas of the lymphatic vessels that are clustered with a high concentration white blood cells.

§ Lymph nodes filter the lymph. § White blood cells are produced within them, which go on to destroy unrecognized pathogens. § You can find lymph nodes in the groin, neck, armpit, tonsils, thymus, spleen, and the walls of the intestine.

§ This refers to blockages of lymph circulation, resulting in a buildup of fluid. In extreme cases, this can cause very significant swelling. § Don’t Google it… just don’t.

§ Interstitial fluid § Lymph § Plasma

§ Lymphatic System § Page 99 – 102 § Excretory System § Page 103 -105 §Your notes should help you answer almost every question. Having trouble? Check out your textbook (that big heavy thing that’s been sitting at the bottom of your locker).