Difference between blood and lymph

• Blood contains #to# red blood cells, white blood cells, platelets and plasma which constitutes water, #O_2#, #CO_2#, glucose, salt, enzymes. • Tissue fluid contains #to# #O_2#, #CO_2#, sugars, salts, amino acids, hormones, coezymes & white blood cells. • Lymph contains #to# #CO_2#, proteins, glucose and white blood cells. Blood that is red fluid flows through arteries, veins & capillaries. These all are vessels of circulatory system which transport nutrients contained within blood to various body parts. Blood contain highest amount of oxygen as it contains red blood cells. All the constituents of the blood which manage to escape from walls of blood capillaries, form tissue fluid also known as interstitial fluid. This escaped stuff surrounds all the body tissues and bathe them. Red blood cells & plasma proteins i.e albumin, fibrinogen, immunoglobulins etc being larger in size can't escape and hence are not present in tissue fluid. However, it contain proteins secreted by body cells. It contains less glucose, proteins, #O_2#& more #CO_2# as compared to blood. When tissue fluid gets enclosed in lymph capillaries then it is called lymph. So it's composition is not that different from tissue fluid. It just contain a little bit lower amount of proteins, glucose and #O_2#. It contain greater amount of fats than both others. When lymph gets filtered in lymph nodes via lymph cells then this fluid is transferred back to the blood. Hope it helps...

Learning Objectives • Describe the major anatomical features of the circulatory and lymphatic systems • Explain why the circulatory and lymphatic systems lack normal microbiota • Explain how microorganisms overcome defenses of the circulatory and lymphatic systems to cause infection • Describe general signs and symptoms of disease associated with infections of the circulatory and lymphatic systems Barbara is a 43-year-old patient who has been diagnosed with metastatic inflammatory breast cancer. To facilitate her ongoing chemotherapy, her physician implanted a port attached to a central venous catheter. At a recent checkup, she reported feeling restless and complained that the site of the catheter had become uncomfortable. After removing the dressing, the physician observed that the surgical site appeared red and was warm to the touch, suggesting a localized infection. Barbara was also running a fever of 38.2 °C (100.8 °F). Her physician treated the affected area with a topical antiseptic and applied a fresh dressing. She also prescribed a course of the antibiotic oxacillin. Exercise \(\PageIndex\) • Based on this information, what factors likely contributed to Barbara’s condition? • What is the most likely source of the microbes involved? The circulatory and lymphatic systems are networks of vessels and a pump that transport blood and lymph, respectively, throughout the body. When these systems are infected with a microorganism, the network of vessels can facilitate the r...

Elephantiasis is caused by worms called Wuchereria bancrofti(Nematoda).This parasites live in the lymph nodes of the host and affect it by blocking the flow and causing localised swelling called Lymphedema. These worms live up to 6-8 years laying lots of eggs in the lymphatic system. This is usually transmitted by mosquito - [Instructor] When you go to the doctors for a routine checkup, they usually start by feeling your neck or sometimes behind of your ears. Why do they do that? What are they checking for? And you may have heard of this disease called elephantiasis, where the limbs of the body like, say, one of the legs starts swelling up. What causes this swelling? To answer these questions, we need to look at the lymphatic system of our body. So what is this lymph? Let's find out. To figure out what lymph is, let's start with something that we already know, the circulatory system. It consists of your heart, which doesn't look like this. I'm pretty sure you know about this. But since we are not focusing on the heart, let's just keep it this way. Anyways, this heart pumps this oxygen-rich blood through this artery all the way into the blood capillaries. This is where the cells of our body starts removing the oxygen from the blood and starts throwing carbon dioxide back into the blood. And now the blood is deoxygenated because it no longer has oxygen, it has a lot of carbon dioxide. And that's why it's shown in blue. It goes all the way up through this vein into the heart....

Lymphocytes are a type of white blood cell. They help your body’s immune system fight cancer and foreign viruses and bacteria. Your lymphocyte count can be taken during a normal blood test at your healthcare provider’s office. Lymphocyte levels vary depending on your age, race, sex, altitude and lifestyle. Overview What are lymphocytes? Lymphocytes are a type of white blood cell. They play an important role in your • T lymphocytes (T cells): T cells control your body’s immune system response and directly attack and kill infected cells and tumor cells. • B lymphocytes (B cells): B cells make antibodies. Antibodies are proteins that target viruses, bacteria and other foreign invaders. Function What do lymphocytes do? Lymphocytes help your body’s immune system fight cancer and foreign viruses and bacteria (antigens). Lymphocytes help your immune system remember every antigen it comes in contact with. After an encounter, some lymphocytes turn into memory cells. When memory cells run into an antigen again, they recognize it and quickly respond. This is why you don’t get infections like How do T cells and B cells work? Your T cells and B cells work together. They each have different roles in your immune system. Your T cells help kill infected cells and control your body’s • Cytotoxic (killer) T cells: Cytotoxic T cells attach to antigens on infected or abnormal cells. Then, they kill the infected cells by making holes in their cell membranes and inserting enzymes into the cells....

Together with the heart, blood vessels represent the main component of the circulatory system, which consists of an elaborate network of tubes throughout the body. The circulatory system involves the combined functioning of the heart, blood and blood vessels to deliver oxygen and nutrients to organ systems and tissues and to remove waste products resulting from metabolism. The lymphatic system is composed of an intricate system of lymphatic vessels and lymphatic tissues, including lymph nodes, the spleen and thymus. The main purpose of lymphatic vessels is to absorb and return lymph fluid from the body back to the blood, and to assist in the body’s immune function. Blood Vessels Three types of blood vessels can be differentiated. Arteries carry blood away from the heart, and veins carry blood toward the heart. Capillaries are the smallest links between arteries and veins and are formed by small arteries, called arterioles, branching out to become progressively smaller in diameter. The thin wall of the capillaries enables an exchange of oxygen and nutrients into the body tissues and absorption of carbon dioxide and waste products back into the blood circulatory system. In order to withstand the high pressure of blood pumped from the heart, arteries have a thicker wall and a better developed system of smooth muscles in their walls than veins. The blood pressure in the veins is much lower, and the smooth musculature in their walls is not as well developed as it is in arteries...

Overview What are lymphatic capillaries? Lymphatic capillaries (CAP-uh-lair-eez), also called lymph capillaries, are tiny vessels that exist throughout your body. A capillary is a tiny tube with an inside diameter as thin as a hair. Lymphatic capillaries are similar to blood capillaries, but they are larger in diameter and have closed ends. Unlike blood capillaries, fluid can flow into lymph capillaries but can’t flow out through the cell walls. It can only move forward. Lymphatic capillaries belong to your Function What do lymphatic capillaries do? Lymph capillaries help keep the overall fluid balance in your body. Throughout your body, interstitial fluid (fluid found in the spaces around cells) leaks from blood capillaries into your tissues. Lymph capillaries pick up this fluid and help return it to your What is lymph? Lymph, also called lymphatic fluid, is the extra interstitial fluid that drains from your body’s cells and tissues. The fluid is watery and colorless. Lymph includes substances such as: • Cancer cells. • Damaged cells. • Fats. • Foreign invaders, including bacteria and viruses. • Minerals. • Nutrients. • Proteins. • White blood cells (lymphocytes) that fight infections. How do lymphatic capillaries function? Lymph capillaries have walls that only work one way, to let fluid in. As lymph capillaries collect interstitial fluid from tissues, the pressure in the lymph capillaries grows. This increasing pressure moves the lymph fluid forward toward the heart. Ev...