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Free research papers and essays on topics related to: circulatory system

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  • Circulatory System - 1,361 words
    CIRCULATORY SYSTEM (A) FORMATION OF TISSUE FLUID AND EXCHANGE OF MATERIALS IN THE CAPILLARY NETWORK In a capillary network, two opposing forces mainly determine the movement of fluid between the blood and tissue fluid: (1) the hydrostatic pressure difference and (2) the osmotic potential difference between the blood and the tissue fluid. In the part of the capillary network near the arterial end, blood pressure is much higher than that of the tissue fluid so that the difference in hydrostatic pressure exceeds the osmotic difference between the two fluids. As a result, some plasma is filtered out of the capillaries under pressure into the tissue space to form tissue fluid. As blood moves alon ...
    Related: circulatory, circulatory system, surface area, bone marrow, narrow
  • Circulatory System - 1,289 words
    ... her factors include abnormalities in the proteins that regulate blood cell production and a malfunctioning immune system that interferes with the normal blood cell production. Certain environmental factors have been associated with the development of plastic anemia. Chemotherapy drugs such as busulfan or antibiotics such as chloraphenicol can cause temporary or prolonged plastic anemia. Chemicals such as benzene and pesticides, infections such as viral hepatitis and mononucleosis, autoimmune disorders and ionizing radiation also has been linked to the development of plastic anemia. Although exposure to these agents increases the risk of developing plastic anemia, it is proven that they a ...
    Related: circulatory, circulatory system, immune system, viral hepatitis, good health
  • The Human Circulatory System - 1,932 words
    The Human Circulatory System The human circulatory is one of, if not the, most important system in the body. It consists of such organs as the heart, and lungs (Dunbar 4). However every organ and organ system in the body is nourished and kept alive through the use of the circulatory system (2-4). The main organ in the circulatory system is the heart. Basically, the heart is a pump that keeps fresh blood coursing through your body, bringing oxygen and nutrients to all your organs and cells (2). A mathematical description of what the heart accomplishes is astonishing. Your heart keeps approximately ten pints (4.73 liters) of blood constantly circulating through seventy five thousand miles (one ...
    Related: circulatory, circulatory system, human anatomy, human body, nervous system
  • Abortion - 1,868 words
    Abortion "You wake up in the morning and find yourself back to back in bed with an unconscious violinist. A famous unconscious violinist. He has been found to have a fatal kidney ailment, and the Society of Music Lovers have canvassed all the available medical records and found that you alone have the right blood type to help. They have therefore kidnapped you, and last night the violinist's circulatory system was plugged into yours, so that your kidneys can be used to extract poisons from his blood as well as your own. The director of the hospital now tells you, 'Look, we're sorry the Society of Music Lovers did this to you-we would never have permitted it if we had known. But still, they d ...
    Related: abortion, healthy people, cesarean section, natural environment, suppose
  • Abortion 3 - 1,012 words
    Abortion 3 annon Every year in Canada, over 100 000 murders never reach the courtroom.1 They never reach the courtroom because they are completely legal. Abortion continues to grow across the world, hurting and killing children, as well as their mothers. Abortion is i mmoral, harmful, and actions must be taken to stop it. When a woman aborts, she is not only killing her child but is also harming herself. Legal abortion is the fifth leading cause of maternal death.2 Ten percent of women undergoing abortion suffer immediate complications, and one fifth of those are consid ered life threatening.3 Teenage aborters are at an even higher risk.4 These serious conditions include infection, embolisms ...
    Related: abortion, online available, people believe, the courtroom, woman
  • Alcoholismnature Or Nuture - 1,570 words
    ... havior. Experiments have shown those males exhibit higher levels of aggression than do females. The aggressive behavior starts in the adolescent stages of life and may continue into adulthood. Where does the aggressiveness originate? Part of the explanation is that children who are sociable and spontaneous exhibit more aggressive behavior than those who do not. Surprisingly, common traits amongst these children are being first born, having a stable family life and a shy temperament. More current, up to date explanation state that aggression is learned response to frustration and by observing others who exhibit the same aggressive behavior. Males also are at greater risk for developing cr ...
    Related: environmental factors, drug abuse, sexual abuse, sitting, dependence
  • Alternative Approaches To The Treatment Of Diabetes - 1,617 words
    Alternative Approaches To The Treatment Of Diabetes Alternative Approaches to the Treatment of Diabetes Diabetes is a general term for a disease caused by defective carbohydrate metabolism and characterized by abnormally large amounts of sugar in the blood and urine. Diabetes is usually classified into two types. Type I or insulin-dependent diabetes, formerly called juvenile-onset, usually occurs in children and young adults; and, Type II, or non-insulin dependent diabetes (formerly called adult-onset diabetes) is found in persons over 40 years old and progresses slowly (Funk and Wagnalls 183). Diabetes is considered a group of disorders with multiple causes, rather than a single disorder. T ...
    Related: alternative approaches, approaches, dependent diabetes, diabetes, type 1 diabetes, type 2 diabetes
  • Biology And Human Evolution - 1,381 words
    Biology And Human Evolution Human Biology and Evolution Humans are Alive The earliest human life form can be traced back more than 3.5 billion years ago. Humans are said to be descendants of a single celled ancestor. Although they are different in size and shape all basic functions are alike. The more complex the organization of the cell became the more successful and developed it became. As these single celled organisms developed they became known as pre-humans. We share many characteristics with these pre-humans. Some of these characteristics include the masters of heredity DNA and RNA as well as proteins composed of amino acids, membranes or bound cells and lastly controlled cell division ...
    Related: biology, evolution, human biology, human brain, human evolution, human life
  • Biology Instinct - 467 words
    Biology Instinct subject = biology title = Biology Instinct Insects are neumerout invertebrate animals that belong in the Phylum Arthropoda and Class Insecta. The class Insecta is divided into 2 subclasses: Apterygota, or wingless insects, and Pterygota, or winged insects. Subclass Pterygota is futher divided on basis of metamorphosis. Insects that have undergone incomplete metamorphosis are the Exopterygota. Insects that undergo complete metamorphosis are the Endopterygota. Insects have an outer bilateral exoskeleton to which the muscles are attached to and provides protection for internal organs. The body is divided into 3 main parts which are the head, which include mouthparts, eyes, and ...
    Related: biology, instinct, muscular system, reproductive system, allergic
  • Butterflies - 946 words
    Butterflies BUTTERFLIES: Butterflies are flying insects, which comprise the order Lepidoptera with. There are about 15,000 to 20,000 kinds of butterflies. Butterflies are holometobore insects. The largest butterfly ever found is the Queen Alexandras butterfly. Scientific and non-scientific vocabulary words which must be learned before reading this section in alphabetical order: Abdomen: (noun) 1. The part of the body in mammals, that lies between the thorax and the pelvis. 2. In arthropods the major part of the body behind the thorax. Appendage: (noun) (1. Something attached to a larger entity.) 2. A subordinate or derivative bodily part Conceal: (verb) to keep from observation, discovery, o ...
    Related: human body, circulatory system, respiratory system, liquid, respiratory
  • Chemistry Research - 2,121 words
    Chemistry Research CHAPTER 32 The tallest tree is the Redwood (Sequoia sempervirens) approx 110 m The tallest Angiosperm is the Australian Eucalyptus regnans Water Uptake and transport (Fig. 32.1) = water is essential because: transport solute, cool the body, photosynthesis and Turgor pressure Osmosis- movement of H2) through a semi-impermeable membrane Osmotic potential ( o)-depend on dissolve solute: Hi concentration means more negative o. Isoosmotic-two solution with same o; Hypoosmotic- solution that has a less negative o(more +) Turgor Pressure -hydraulic pressure result from water up take, cell turgid; analog to air pressure in a tire Water Potential ( )-Overall tendency of a solution ...
    Related: chemistry, respiratory system, nervous system, endocrine system, poison
  • Earth Worms - 469 words
    Earth Worms Earth Worm Disection Parts Function Digestive System - Prostomium - a small fleshy lobe that extends over the mouth, used to help dig through the soil - Mouth - the entrance for food into the digestive system, located under the prostomium - Pharynx - A tube at the beginning of the digestive tract that creates a sucking action to remove food particles from the soil, located just behind the mouth - Esophagus - a narrow passage in the digestive track that connects the pharynex to the crop - Crop - a temporary storage area in the digestive track , food waits here before it passes to the remainder of the digestive track - Gizzard - an area in the digestive track where strong muscles g ...
    Related: worms, reproductive system, nervous system, circulatory system, brain
  • Earthworms - 429 words
    Earthworms Earthworms are classified as Annelida. Annelida mean little rings which refers to the many segments in their body. The structure of an earthworms body is made up of more than one hundred segments separated by partitions that divide the coelum. All segments are identical except by the anterior and posterior ends. The anterior segments reflect the cephalization that is an adaption of burrowing. The head of the earthworm contains the sense organs. The muscle lines that make up the interior body wall are circular and longitudinal. Earthworms move by anchoring some segments by their setae and contracts the circular muscles in front of those segments, producing fluid pressure in the ant ...
    Related: carbon dioxide, circulatory system, respiratory system, link, storage
  • Ebola Virus - 1,889 words
    Ebola Virus In the world today, there are many known deadly viruses, but few present as great a threat as Ebola, the virus that causes Ebola Hemorrhagic Fever. Key factors in understanding Ebola HF include: Its history, plan of attack, and the diagnosis and treatment of the disease. The Ebola virus can, and usually does cause a disease called Ebola hemorrhagic fever, which is a Viral hemorrhagic fever. According to the proceedings of the 4th National Symposium on Biosafety, the clinical definition for Viral hemorrhagic fever is as follows. "Viral hemorrhagic fever is an acute infection that begins with fever, myalgia, malaise and progresses to prostration. It shows evidence of vascular dysre ...
    Related: ebola, ebola virus, influenza virus, virus, health care
  • Human Body - 1,516 words
    Human Body In the Beginning Within a month of conception, the cluster of cells that will, in the course of time, become a human being begins throbbing, signaling the development of a primitive heart. Scarcely four weeks more pass before an intricate network of veins and arteries the size of a pea forms and subdivides into a tiny replica of the four chambers that will one day make up the adult heart. As the fetus grows, so does its vitally important circulatory system. Although most of the functions of the heart remain dependent upon the mother throughout the entire pregnancy, in the latter stages the organ becomes strong enough to beat on its own. Even so, until birth the baby is cared for a ...
    Related: body weight, human body, high cholesterol, heart association, excess
  • Human Body - 1,468 words
    ... rising source of saturated fat may be the nondairy creamer used in coffee. A study by University of Nebraska Medical Center professors found that 22 out of 25 non-dairy creamers contained coconut oil. Coconut oil is more saturated than cream, butter, lard or beef fat. Be aware of other prepared foods containing coconut oil. Another important consideration is increasing the ratio of polyunsaturated fats to saturated fats. Polyunsaturated fats lower cholesterol by increasing lipoprotein breakdown and removal, and lowering the synthesis of lipoproteins in the liver. Also, the essential fatty acid content, such as linoleic acid, is beneficial. It decreases platelet aggregation and serum chol ...
    Related: human body, heart association, good news, coronary heart disease, sunshine
  • Human Disease And Their Control Follow Up Questions 1a When People Refer To Pathogens, They Are Talking About Bacteria That C - 1,108 words
    Human Disease and Their Control follow up questions 1a) When people refer to pathogens, they are talking about bacteria that cause disease. 1b)The toxins actually excreted by the pathogens are the main cause of diseases although thetoxins are only by-products of the pathogen's metabolism. 2a)In most cases, the toxins excreted by the pathogens find there way into the circulatory system. Thus, sometimes, the infection is caused somewhere else from where the toxins were excreted. An example of this would be Rheumatic fever. The toxins that ca Yet another example of where the disease is in a different location then where the toxin was released is Dipheria. The pathogen that causes Diptheria is u ...
    Related: bacteria, human body, human disease, refer, blood cells
  • Hydrocephalus - 1,005 words
    Hydrocephalus Hydrocephalus Definition A condition affiliated with excessive fluid in the brain. Causes, incidence, and risk factors The fluid in the brain (cerebrospinal fluid or CSF) is formed in the brain. CSF usually circulates through parts of the brain, its covering, and the spinal canal, and is then absorbed into the circulatory system. When the circulation or absorption of this fluid is blocked, or excessive fluid is produced, the volume of fluid in the brain becomes higher than normal. The accumulation of fluid puts pressure on the brain forcing it against the skull and damaging or destroying the tissues. Symptoms vary depending on the cause of the obstruction to CSF circulation, th ...
    Related: nervous system, social services, life span, scan, vascular
  • International Studies H - 1,693 words
    ... Sadat took the initiative and in November 1977 made a ground-breaking visit to Israel. After long negotiations under the watchful and persuasive aegis of the United States, Israel and Egypt signed a peace agreement, the culmination of face-to-face talks in 1979 in the American presidential retreat of Camp David. The deal was land for peace. Egypt gradually received back the Sinai, taking full control in 1982. In return, Israel had a lasting peace with what until then had been its most significant Arab enemy.10 Prime Minister Begin and Sadat shared a Nobel Peace Prize for their agreement. The relationship between Egypt and Israel improved noticeably, but deteriorated between Israel and o ...
    Related: international studies, israeli government, arab world, shimon peres, afford
  • Introduction - 2,200 words
    INTRODUCTION Cardiac Location and Structures The heart is the driving force of the circulatory system, contracting about 70 times/minute to pump an adequate volume of blood with sufficient pressure to perfuse all body organs and tissues. The muscular organ, about the size of a clenched fist, weights from 300 to 400 g. It is located within the mediastinum of the thoratic cavity, above the diaphragm and between the lungs. This location subjects the hearts activity to influence from all pressure variances during respiration, Fassler, (1991). Intrathoracic pressure varies with the respiratory cycle. On inspiration, the heart moves slightly vertically, and the increased negative pressure generate ...
    Related: carbon dioxide, heart disease, sympathetic nervous system, lining, conduction
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