...Introduction A system is made up of different tissues and organs working together to perform a specific function in the body. Skeletal system: Skeletal system is the system of bones, associated cartilages and joints of human body. Together these structures form the human skeleton. Skeleton can be defined as the hard framework of human body around which the entire body is built. Almost all the hard parts of human body are components of human skeletal system. Joints are very important because they make the hard and rigid skeleton allow different types of movements at different locations. If the skeleton were without joints, no movement would have taken place and the significance of human body no more than a stone. Components of Human Skeleton Human skeleton is composed of three main components; Bones, Associated cartilages and Joints. Bones: Bone is a tough and rigid form of connective tissue. It is the weight bearing organ of human body and it is responsible for almost all strength of human skeleton. Cartilages: Cartilage is also a form of connective tissue but is not as tough and rigid as bone. The main difference in the cartilage and bone is the mineralization factor. Bones are highly mineralized with calcium salts while cartilages are not. Joints: Joints are important components of human skeleton because they make the human skeleton mobile. A joint occurs between “two or more bones”, “bone and cartilage” and “cartilage and cartilage”. Divisions of Human Skeleton:...
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...their functions The four basic human body structures and their units are as follows – • Cells • Tissues • Organs • Systems Cells A cell is the simplest and smallest unit of the human body. They can live independently and can also reproduce themselves. Cells exist in a variety of shapes and sizes including elongated, oval and square. Cells have many different functions. A group of cells is called a tissue. The study of the structure, and the form of cells and tissues is called histology. Joanne Thomas NC26585 Assignment 1 Page 2 Tissues Tissue is a group/organization of a number of similar cells, not all are identical, but all are from the same origin. They carry out a similar function, of which consists of a varying amount of non-living and intercellular substances. There are four main types of tissues – Epithelial tissue This is widespread throughout the body. They form the covering to all the body surfaces and is the main tissue found in glands. This tissue performs a variety of functions including protection, secretion, absorption, filtration and sensory receptors. Connective tissue This binds structures together and provides a framework and support for organs and the body as a whole. It also acts as a transport system to carry substances around the body, and it also helps to store flat. It helps to protect the body against disease and helps repair tissue damage...
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...Brugia malayi lymphatic filariasis – Onchocerca volvulus - river blindness – Loa loa - loaiasis 1 Today’s Lecture •Taxonomy •Lymphatic Filariae •Nonlymphatic Filariae •Disease •Diagnosis, Treatment, & Control KINGDOM PHYLUM CLASS ORDER FAMILY GENUS/SPECIES Wuchereria bancrofti Brugia malayi ANIMALIA NEMATODA RHABDITAE SPIRURIDA ONCHOCERCIDAE Onchocerca volvulus Loa loa (Dirofilaria immitis) NONLYMPHATIC LYMPHATIC 2 Lymphatic Filariae • Wuchereria bancrofti – Approximately 600 million individuals are exposed with at least 80 million currently infected. – disease caused often referred to as Bancroftian filariasis. – occurs throughout the tropics, especially in Africa, South America, India, and Southeast Asia – has also been found in parts of Europe, Nile Valley and Australia • Brugia malayi – limited mostly to parts of India and Southeast Asia – infects probably less than 10 million The Global Distribution of Lymphatic Filariasis 3 Major Life Cycle Stages • INFECTIOUS LARVAE - transmitted to humans by mosquito bites • ADULT WORM - develop from larvae, reside in the lymphatic vessels • MICROFILARIAE - produced by mated adults and found in host bloodstream, when acquired by mosquito develop into infectious larvae The Lymphatic System • System of vessels that drain lymph fluid from the tissues • Delivers antigen to lymph nodes • Eventually lymph is returned to the blood via the thoracic duct 4 Life Cycle of Lymphatic Filariae larvae...
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...Brugia malayi lymphatic filariasis – Onchocerca volvulus - river blindness – Loa loa - loaiasis 1 Today’s Lecture •Taxonomy •Lymphatic Filariae •Nonlymphatic Filariae •Disease •Diagnosis, Treatment, & Control KINGDOM PHYLUM CLASS ORDER FAMILY GENUS/SPECIES Wuchereria bancrofti Brugia malayi ANIMALIA NEMATODA RHABDITAE SPIRURIDA ONCHOCERCIDAE Onchocerca volvulus Loa loa (Dirofilaria immitis) NONLYMPHATIC LYMPHATIC 2 Lymphatic Filariae • Wuchereria bancrofti – Approximately 600 million individuals are exposed with at least 80 million currently infected. – disease caused often referred to as Bancroftian filariasis. – occurs throughout the tropics, especially in Africa, South America, India, and Southeast Asia – has also been found in parts of Europe, Nile Valley and Australia • Brugia malayi – limited mostly to parts of India and Southeast Asia – infects probably less than 10 million The Global Distribution of Lymphatic Filariasis 3 Major Life Cycle Stages • INFECTIOUS LARVAE - transmitted to humans by mosquito bites • ADULT WORM - develop from larvae, reside in the lymphatic vessels • MICROFILARIAE - produced by mated adults and found in host bloodstream, when acquired by mosquito develop into infectious larvae The Lymphatic System • System of vessels that drain lymph fluid from the tissues • Delivers antigen to lymph nodes • Eventually lymph is returned to the blood via the thoracic duct 4 Life Cycle of Lymphatic Filariae larvae...
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...1.1 Describe the four basic human body structure units and their functions The way in which physical processes and functions take place in the body can be looked at on four main levels, moving progressively from the detailed to the general. At the most detailed level are the cells – the most basic of the physical structure units. Similar cells, when combined and held together, form tissue, the next main structure unit. Organs are collections of tissues that are combined to perform a particular function in the body. Organs do not work in isolation, however, and combine with other organs to create a biological system. Cells The cell is the most basic structural unit in the body. There are around 300 different cell types in the human body. While they differ in function, there are certain fundamental components or features that they generally have in common, such as a nucleus (with the exception of red blood cells), cytoplasm and a cell or plasma membrane. A cell membrane is composed of 60% protein, and 40% lipid, or fat. This membrane is a phospholipid bilayer which contains embedded protein molecules. It is a living boundary separating the living contents of the cell from its environment. Its function is to regulate the passage of molecules into and out of the cell. Within the membrane, the cell consists of cytoplasm, a gel-like substance containing organelles - small structures each with their own function. Common to all human cells except red blood cells, the nucleus is...
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...System Connections Sara Lenz HCS/230 August 1, 2011 Michael Allar, Ph.D. System Connections The Lymphatic System has four major structures lymphocytes, lymphatic vessels, lymphoid organs, and lymphoid nodules (Martini & Bartholomew, 2010). The functions of the lymphatic system are to provide the body with an immune system to fight off infections, bacteria, and any foreign invader that enters the body and maintains the balance of fluids in the internal environment (Cayuga School District, 1997). The lymphatic system works in correlation with the skeletal and cardiovascular systems (Allar, 2011). The lymphatic system regulates fluids in the body (National Institute of Health, 2010). The importance of fluid regulation in the body is important to help prevent edema, a serious disease caused by an over-accumulation of bodily fluids that can lead to tissue destruction or death. This problem is avoided by the presence of lymphatic vessels that act as "drains" to collect the excess fluid and return it to the venous blood just before it reaches the heart (Cayuga School District, 1997). The lymphatic system is a specialized component of the circulatory system. It consists of a moving fluid (lymph) derived from the blood and tissue fluid and a group of vessels (lymphatics) that returns lymph to the blood. Lymphatic vessels parallel veins (Mitchell High School, 2005). The Lymphatic System includes lymph nodes located along the paths of collecting vessels, isolated...
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...ANATOMY AND PHYSIOLOGY P2, P3 4/27/2015 Khadra Ali | P1 – Outline the functions of the main cell components The human body is made up of millions of tiny cells that can only be seen under a microscope, cell also vary in shape and size. Cells are the basic structural of all living things. The human body is poised of trillions of cells. They give structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of them. Cells all have different sizes, shapes, and jobs to do. Each cell has a different function. The actual definition of cells is the smallest structural unit of the body that is capable of independent functioning, it consisting of one or more nuclei; it has a cytoplasm, and various organelles which are all surrounded by a cell membrane. There are four main parts to a cell; Plasma/Cell membrane, Cytoplasm, Nucleus and Cell Organelles. Plasma/Cell membrane: The plasma/cell membrane is a phospho-lipid-protein bi-layer; the lipids are small fatty molecules in two layers (bi-layer) with larger protein molecules inserted at intervals partly or completely through the bi-layer. The lipid molecules are phospholipids, the two lipid chains are insoluble in water and the phosphate head is water soluble. The fluid which surrounds the cells and the cytoplasm are watery environments next to the phosphate heads. Protein molecules create channels...
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...Hodgkin’s lymphoma formerly known as Hodgkin’s disease. This is a cancer of the lymphatic system, which is a part of the immune system (Mayo Clinic Staff, “ Definition,” 2014, para. 1). Some of the functional changes that are caused by this disease are: unexplained weight loss, a loss of appetite, itching, painless swelling of the lymph nodes in your neck, arm pits, and groin ( Mayo Clinic Staff, “ Symptoms,” 2014, para.1). The cause of this disease is not readily known. The doctors know that most cases of Hodgkin’s lymphoma occur when an infecting fighting cell called a B cell develops a mutation of its DNA ( May Clinic Staff, “ Causes,” 2014, para. 1). The mutation causes the a large number of oversized, abnormal B cells to accumulate in the lymphatic system, where they crowd out healthy cells and causes the signs and symptoms of Hodgkin’s lymphoma ( Mayo Clinic Staff, “ Causes,” 2014, para.1). There are several tests a doctor may order, including a CLIA waived test to determine if a person has lymphoma. A sample of the patient’s blood is examined in the lab to see if there is anything in the blood indicates the possibility of cancer (Mayo Clinic Staff, “ Test and diagnosis,” 2014, para.2). The doctor may give the patient a physical exam, image test to remove a swollen lymph node, and also bone marrow testing. Additionally, doctors use the letters A and B to indicate whether you’re experiencing symptoms of Hodgkin’s lymphoma: A means that you don’t have any significant...
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...University of Phoenix Material Body Systems and Diseases Complete the table below for the required systems listed. You are required to list four to six of the main organs of each body system, one or two sentences explaining the function of the system itself in your own words, and a short list of five to six major diseases that afflict each system. This assignment is due in Week One. |System |Organs in the System |Function of the System |Major Diseases Afflicting the System | |Example: |Thymus |Protects the body from disease and|Hay Fever | |Immune System |Lymph Nodes |infection by defending against, |Asthma | | |Skin |attacking and removing pathogens. |Urticaria (Hives) | | |Tonsils |Removes debris from the body, such|Acquired Immunodeficiency Syndrome (AIDS) | | |Bone Marrow |as dead cells. |Rheumatic Fever | | |Spleen | |Rheumatoid Arthritis | |Required: |Brain |The nervous system allows us to |Multiple sclerosis...
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...Lymphoma Lymphoma is when cells in the lymph system change and grow uncontrollably that may form a tumor. In the lymph system there are thin tubes that branch out to all different parts of the body ("Types of Cancer: Lymphoma"). Its job is to fight infections and diseases. In the lymph system it carries lymph which is colorless fluid containing lymphocytes that are white blood cells. The main job of a lymphocyte is to fight of germs in the body. Two main lymphocytes are B-lymphocytes and T-lymphocytes. B-lymphocytes also called B-cells make antibodies to fight off bacteria and T-lymphocytes kill viruses, foreign cells and triggers B-cells to make antibodies ("Types of Cancer: Lymphoma"). In different areas of the lymph systems there are lymph nodes through out the body. “Lymph nodes are found in clusters in the abdomen, groin, pelvis, underarms, and neck. Other parts of the lymph system include the spleen which makes lymphocytes and filters blood, the thymus an organ under the breast bone and the tonsils which are located in the throat” ("Types of Cancer: Lymphoma"). There are two types of lymphoma Hodgkin and Non Hodgkin. They both have different types and it is important to know which you have so the treatment is affective. Hodgkin is a blood cancer but may appear as a solid tumor in the glands, most common in teenagers and young adults. According how the cells look under a microscope is how they are identified ("Leukaemia & Lymphoma Research"). Most patients...
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...YourFirstName YourLastName Instructor's Name Course Title 16 December 2015 Lymphatic And Immune System The Lymphatic System Anatomy The lymphatic system is closely related to the cardiovascular system. It is composed of lymphatic vessels, lymphoid tissues and organs, and lymph. The lymphatic vessels are composed of capillaries, collecting vessels, and trunks (Klein, 2010). Lymphatic capillaries drain into the collecting ducts that drain into the trunks. The trunks drain into the subclavian veins. Lymphatic organs in the body include lymph nodes, thymus gland, the spleen, tonsils, lymphatic vessels, and Peyer' patches in the small intestines. In comparison to blood vessels, lymphatic vessels have all the three tunics found on blood vessels. However, large vessels have a vasa vasorum layer in addition to the three tunics found in other vessels. Like blood vessels, lymphatic vessels have many valves (that prevent back flow) and anastomoses. They are characteristically larger than blood vessels and on their walls are overlapping flaps that allow large proteins to get into circulation. Lymph nodes, are present along the lymphatic vessels and range in size from the size of a pin head to that of a lima bean. Examples of lymph nodes include the popliteal lymph nodes, the inguinal lymph node, the cubital, axillary, and cervical lymph nodes as shown in figure one below. Lymph nodes or glands mostly occur in clusters and drain various parts of the...
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...anatomy and physiology of human body systems. Learners will be able to gain an overview of the organisation of the human body before looking at how body systems work together to provide energy for the body. Learners will have the opportunity to investigate how homeostatic mechanisms operate in the body. Unit introduction This unit introduces core knowledge of cellular structure and function, and the organisation of the body as a whole, and then builds on this to develop a more detailed knowledge of the fine anatomy and physiology of the systems involved in energy metabolism. Learners will examine the homeostatic mechanisms involved in regulating these systems to maintain health. Learners will be given the opportunity to undertake practical activities which will require them to take measurements of the cardio-vascular system, the respiratory system and of body temperature, using noninvasive techniques to investigate normal responses to routine variations in body functioning. This unit provides the core understanding of human physiology that underpins the study of the specialist physiology units within this programme. The unit also provides an overview of body functioning that is valuable for anyone working or intending to work in a field relating to health and social care. Learning outcomes On completion of this unit a learner should: 1. Know the organisation of the human body 2. Understand the functioning of the body systems associated with energy metabolism ...
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...Alterations in Blood Flow Circulatory System: * Primary function: transport of oxygen and nutrient and removal of metabolic waste products * Requires complex circuitry of vessels powered by heart General Mechanisms That Alter Flow: * Flow reduction in systemic circuit creates ischemia, leading to hypoxia * Flow reduction in venous system alters waste removal and increases systemic pressure * Venous engorgement or venous obstruction * Flow reduction in lymphatic system causes edema * Changes to lymphatic vessels and lymph circulation * Blood vessel obstructions * Blood vessel structural alterations Lymphatic Vessels: * Lymphatic circulation overwhelmed when changes in capillary or interstitial oncotic pressures increase filtration, or when fluid movement at capillary bed is impaired * Causes edema * Causes wide variety of conditions * Lymphedema- lymphatic flow alteration due to impairment in lymph circulation Blood Vessel Obstructions: * Alteration of blood flow may involve impedance of arterial or venous flow * Some obstructions specific to arterial or venous * Others form on both sides * Will now cover those that affect arteries and veins- specific later * Thrombus= blood clot attached to vessel wall * Thromboembolus- detached thrombus * Develop where conditions activate hemostasis * Different triggers for arteries and veins * Shock can lead to thrombi ...
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...Chapter.20 Lymphatic System & lymphoid organs and tissues Lymphatic System: returns fluids that have leaked from the blood vascular system back into the blood 3 Parts: Network of lymphatic vessels Lymph = fluid contained in those vessels Lymph nodes - cleanse the lymph as it passes through them Lymphatic vessels form a one way system in which lymph fluid flows only towards the heart. when fluid pressure is greater then the pressure n the lymphatic capillary it will be drained toward the heart. order questions? how does it flow from the lymphatic capillaries to the heart? or opposite way around. The cistern chill collects lymph from the 2 larger lumbar trunks that drain the lower limbs & form the intestinal trunk that drains the digestive organs. Lymphoid Organs & Tissues: provide the structural basis of the immune system -House phagocytic cells & lymphocytes which play roles in the body defines mechanisms & resistance to disease. Ex- Spleen Lymphatic Capillaries: Weave btwn the tissue cells and blood capillaries in the loose CT of the body these vessels to be EXTREMELY permeable due to mini-valves. Lymphatic Trunks: drain large areas of the body, named for the regions which they drain lymph Lymphatic Ducts: R Lymphatic Duct -drains lymph from R upper limb & right side of head and thorax 2) Thoracic Duct much larger b/c receives lymph from the rest of the body Lymph Transport: Lymphatic vessels are low-pressure conduits...
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...Biol 121 lecture introduction 23rd feb : Pass program Little groups * Learning notes topics discussions * Informal * opens Friday 27th feb 5.00 Studies: How the body works Anatomy Gross anatomy – internal structures Microscopic anatomy- study of cells, study of tissues (microscope) Physiology- cellular physiology – e.g. nerves and muscle fibres Integrative physiology- different tissues and organs, functions e.g. cardiovascular Levels of organisation e.g. tissues, organs, organ systems organism levels Go through link called echo – access lecture recordings My unit- weekly feedback quiz Biology and chemistry lessons Textbook folder mastering a&p Lecture d 3rd week on a Tuesday Labour day (Monday) good Friday Assessments In class tests (30%) Quiz a (10 %) quiz b (20%) Worksheet questions (30%) Final exam 40% See unit outline for due dates, methods, extensions Quiz a Week 3 (early feedback) 30 mins to complete Opens 3pm Tuesday 10th Closes 3am Thursday 12th Quiz b Week 7 semesters Week 3 up to lecture 16 (muscles) 60 mins marked out of 50 Worksheet questions (30%) due week 11 of sem Set of questions provided online in week 8 Week 1-10 Final exam Mix mcq and sa Material from whole semester Higher weighting of 11 &12 Feedback about progress: Quizzes weekly Review assessments EIP BIOL 121 TUTORIAL 1 CHEMISTRY: Reading: pages 53-61 notes * Science of structure that...
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