body from in your digestive system‚ in blood vessels and in your eyes. These muscles operate on their own and are not controlled by the brain. These muscles move food through your digestive system and they also regulate the blood flow in the body. These muscles are smooth in appearance. Cardiac muscles can only be found in the heart. These muscles operate on their own and are not controlled by the brain. Electrical pulses flow through because the cells of your heart care cemented to each other
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injurious agents) NEUTROPHILS are mature cells that can SEEK AND DESTROY agents even in BLOOD ‚ MACROPHAGES begin their life as immature cells in blood called monocytes ‚ when they enter the tissues they swell and become mature and named MACROPHAGES which are extremely capable of SEEK AND DESTROY intratissue injurious agents. White Blood Cells Enter the Tissue Spaces by Diapedesis White Blood Cells Move Through Tissue Spaces by Ameboid Motion White Blood Cells Are Attracted to Inflamed Tissue Areas
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certain white blood cells and generates antibodies. It is also important for the distribution of fluids and nutrients in the body‚ because it drains excess fluids and protein so that tissues do not swell up. "Lymph" is a milky body fluid that contains a type of white blood cells‚ called "lymphocytes‚" along with proteins and fats. Lymph seeps outside the blood vessels in spaces of body tissues and is stored in the "lymphatic" system to flow back into the bloodstream. Through the flow of blood in and
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be known as the immune system. White blood cells are located near places where there could be pathogens entering‚ such as the tonsils. They are found in these places because they protect entry into the body. If pathogens do try to enter then the white blood cells will become activated and will attack the area of infection. They become activated when the dendritic cell engulfs neutrophils which contain the remains of pathogens that they have killed. The dendritic cells travel in lymph to the lymph nodes
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lymphatic) duct‚ right and left subclavian veins‚ and cisterna chyli. a right lymphatic duct b. right and left subclavian veins c. thoracic (left lymphatic) duct d. cisterna chyli . e. Determine the direction of blood and lymph movement between arterioles‚ blood and lymph capillaries‚ and venules. •It starts as interstitial fluid. •Then enters lymphatic capillaries. •It travels in lymphatic vessels to the regional lymph nodes… •Lymph ascends or descends to the thorax‚
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capillaries that form vessels. Lymph fluid is when the tissue fluid is collected though the lymph capillaries. When blood and surrounding cells are continuously exchanging substances from the tissue fluid‚ the fluid then gradually becomes lymph fluid. There are specific tubular vessels which regulate the transportation of lymph into the blood stream‚ which then replaces the volume of blood which has been lost when tissue fluid is being formed. Unlike the cardiovascular system‚ there is no central pump
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billions of cells that travel through the bloodstream. They move in and out of tissues and organs defending the body against foreign bodies (antigens). There are two types of lymphocytes… B cells… these produce antibodies which are released into the fluid surrounding the body’s cells to destroy the invading viruses and bacteria. T cells… if the invader gets inside a cell; these (T cells) lock on to the infected cell‚ multiply and destroy it. The main types of immune cells are white blood cells. There
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Antibodies and immune cells in the tonsils help to kill germs and help to prevent throat and lung infection Adenoids - Like tonsils‚ adenoids help to defend the body from infection. They trap bacteria and viruses which you breathe in through your nose. They contain cells and antibodies of the immune system to help prevent throat and lung infections. Thymus - The gland releases a hormone that stimulates the production of a certain type of white blood cell in the bone marrow; these cells‚ called thymocytes
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system. The system is a vascular network of tubules and ducts that collect‚ filter‚ and return lymph to blood circulation. Lymph is a clear fluid that comes from blood plasma‚ which exits blood vessels at capillary beds. This fluid becomes the interstitial fluid that surrounds cells. Lymph contains water‚ proteins‚ salts‚ lipids‚ white blood cells‚ and other substances that must be returned to the blood. The major components of the lymphatic system include lymph‚ lymphatic vessels‚ and lymphatic organs
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tubes known as lymphatic vessels that carry lymph‚ a colourless fluid that contains a high number of white blood cells and resembles plasma‚ throughout the body. The major parts of the lymph tissue are located in the bone marrow‚ spleen‚ thymus gland‚ lymph nodes‚ and the tonsils. One of the lymphatic system’s major roles is to collect extra lymph fluid from body tissues and return it to the blood. This process is crucial because‚ during the course of the day‚ around 21 litres of fluid from the plasma
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