The spleen performs three major functions: destruction of red blood cells, synthesises antibodies and filters the blood to remove bacteria and infected cells from the body. The spleen acts as a blood filter. It controls the red blood cells and blood storage in the body. It also helps to fight infection. If the spleen detects potentially dangerous bacteria, viruses and other microorganisms in the blood, it creates white blood cells called lymphocytes. The lymphocytes act as defenders against invaders. The lymphocytes produce antibodies, which kill the foreign microorganisms and stop infections from spreading.
The B cells, T cells, Macrophage, and Antibodies are all a very large part of the immune system. There are two types of T cells, killer and helper T cells. Killer T cells find and destroy cells infected with bacteria, and helper T cells control the activity of other cells in the immune system. Then, B cells are considered the “clean up crew,” attacking any bacteria or viruses the T cell left behind. They also make antibodies, which are essential for trapping invading viruses and
According to Virtual Medical Centre (2014) the primary function of the blood is to act as a transport, to give the body protection and to help regulate. The blood dissolves gases such as oxygen and carbon dioxide. The blood also transports vital nutrients throughout the body, such as micro-nutrients, fatty acids and amino acids. The flow of the blood helps to regulate the body’s temperature. Also the blood removes wastes material of metabolism. Blood cells (white and red cells) are carried through the body to help with the body’s natural defense, blood clotting and the carry anti-bodies.
When red blood cells start out, they are shaped like flat discs. Over time, when passing through the spleen, pieces of the membrane are removed, causing the red blood cells to become round in shape, hence the term Spherocytosis (Seattle Childrens). When red blood cells enter the spleen, the cells undergo hemolysis. Hemolysis in hereditary spherocytosis results in the interplay of an intact spleen and an intrinsic membrane protein defect (Medscape). The breakdown of red blood cells is called hemolytic anemia (Wint Carmella).
The largest lymphatic organ in the body is the spleen. The spleen stores healthy blood cells and breaks down aging red blood cells. It also helps make lymphocytes and other types of red blood cells. Another function of the spleen is it collects pathogens from the blood and attacks the trapped pathogens. The adenoids are masses of lymph tissue found in the nose and throat. The two ...
The pancreas can be divided into two sections when studying the histology. The pancreas has exocrine and endocrine functions, each with unique cell types. The exocrine pancreas serves to secrete digestive enzymes into the duodenum. Some of the specific enzymes and secreted substances are Proteases, lipase, amylase, bicarbonate, and water (Bowen, “Exocrine Secretions”). These enzymes are used to break down protein, fat, and carbohydrates respectively. The bicarbonate simply act as an acid buffer to prevent damage of the small intestine as the stomach acid must be neutralized. The enzymes are created in acinar cells and the bicarbonate is synthesized in epithelial cells surrounding pancreatic ducts (Bowen “Exocrine
The spleen is a fist-sized, spongy organ located behind the stomach (removed in this illustration), just under the diaphragm. Part of the lymphatic system, the spleen is composed of two types of tissue. White pulp produces lymphocytes, which release antibodies into the bloodstream to combat infection. More prominent is the red pulp, in which macrophages filter broken cells, parasites, bile pigments, and other useless substances from the blood. Iron from broken red blood cells is stored in the spleen for later use. Despite this variety of functions, an injured or diseased spleen can be removed in adults without great consequence.
The structure and function of our immune systems is a great help for our body to keep all of us healthy. Our immune system has a specific structure that it should maintain. There are also organs that play a major part for the health of our immune system. These organs are called lymphoid organs because of the lymphocytes that inhabit that area. (white blood cells) Bone marrow is also one of the key elements for the immune system, this is where all of our blood cells are being made along with the white blood cells. With the help of the bone marrow, white blood cells are constantly traveling throughout our bodies using the blood cells for help. Another structure that is important for our immune system is lymphoid tissue. Lymphoid tissue acts as a gateway into our bodies that help to prevent incoming germs.
The lymphatic system is made up of organs and tissues, that defends the body against infectious diseases, while also returning tissue fluids to the body’s bloodstream. The lymphatic system prevents the body from disease and infection by producing white blood cells. The lymphatic system helps our immune
The spleen stores blood. The spleen is made up of two types of tissue which consist of the red pulp and white pulp. The function of the red pulp is to store and remove red blood cells. The white pulp consists of localised areas of lymphoid tissue within the spleen and produces the lymphocytes. ( Reeder et al., 2009).
The Spleen by Anne Finch, the Countess of Winchelsea, presents an interesting poetic illustration of depression in the spleen. The spleen for Finch is an enigma, it is mysterious, shape-shifting, and melancholic. Melancholy leads the subject to flashes of a grander, terrifying emotion: the sublime. The subject of Finch’s Pindaric ode experiences the sublime, and yet has the uncanny ability to reflect and reason on the feeling with acuity--even though the subject suffers from depression, which in effect dulls sensory information. The fact that she intensely perceives the sublime suggests a paradox where dulled senses can produce a penetrative emotional episode. To understand the paradox, the theory of the sublime and Finch’s engagement with the sublime in The Spleen must be traced to conceive the state of the dulled mind in the thrall of an infinite, and transcendent wave of emotion. The focus of this essay is that Finch understands that Dullness, as a by-product of depression, enables rational thought during a sublime experience. Furthermore, she thus illustrates her experience through images where she emphasizes her sensory information and her feelings, which were supposedly numbed by depression. Her feelings, indicated in The Spleen, are the crux to how Finch is able to simultaneously feel numb, and process the sublime.
The five main types of white blood cells are neutrophils, monocytes, basophils, lymphocytes, and eosinophils. The most common type of white blood cells are neutrophils. Neutrophils do not live very long, usually only up to 10 hours. They die immediately when a foreign substance is ingested and destroyed. Neutrophils make up 50 to 70% of white blood cells. Until they are alerted to an infection, they are in the bloodstream. They are very quick to responding to infections. Netrophils are granulocytes. Monocytes help to carry out the process of phagocytosis. Monocytes protect the person from pathogens, and remove useless cells from blood. Monocytes are agranular. Basophils only make up about 1% of white blood cells. Basophils respond to infections and inflammation; they release histamines. Scientists believe there is still more to know about basophils, but they do not know what. Basophils are granular. The function of lymphocytes is to recognize and help destroy dangerous foreign substances in the body. Also, lymphocytes can tell when when cells are cancerous or infectious. Lymphocytes are agranulocytes. Eosinophils release toxic substances, and can cause asthma and allergies when they over act and are mass produced in the body. Eosinophils make up 1-6% of white blood cells. Eosinophils are granulocytes.
The lymphatic system is a link of tissues and organs that help clear the poisonous toxins, waste and further unwanted elements that are inside the human body. The key function of the lymphatic system is to transport lymph which is a watery fluid substance holding infection that are fighting white blood cells, all over the human body.
The Cell, the fundamental structural unit of all living organisms. Some cells are complete organisms, such as the unicellular bacteria and protozoa, others, such as nerve, liver, and muscle cells, are specialized components of multicellular organisms. In another words, without cells we wouldn’t be able to live or function correctly. There are Animal Cells and Plant Cells. In Biology class the other day we studied the Animal Cell. We were split into groups of our own and we each picked a different animal cell slide to observe. My group chose the slide,'; Smeared Frog Blood ';.
Charles Baudelaire was a French poet in the late eighteen hundreds. He composed many short poems that didn’t necessarily rhyme. Most of his texts allow for several interpretations. The poems were concentrated around feelings of melancholy, ideas of beauty, happiness, and the desire to escape reality. Baudelaire uses these notions to express himself, others, and his art.
Our blood is able to connect all our organs together to create one organism and is able to transport the most vital and important molecules through these blood streams. Hence, blood cells are needed for immune system function and metabolic functions.