Blood vessels

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  • Chapter 19 - The cardiovascular system: Blood vessels (part a). When you finish this chapter, you should: Describe the three layers that typically form the wall of a blood vessel, and state the function of each; define vasoconstriction and vasodilation; compare and contrast the structure and function of the three types of arteries;...

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  • Harrison's Internal Medicine Chapter 109. Disorders of Platelets and Vessel Wall Disorders of Platelets and Vessel Wall: Introduction Hemostasis is a dynamic process in which the platelet and the blood vessel wall play key roles. Platelets become activated upon adhesion to von Willebrand factor (vWF) and collagen in the exposed subendothelium after injury. Platelet activation is also mediated through shear forces imposed by blood flow itself, particularly in areas where the vessel wall is diseased, and is also affected by the inflammatory state of the endothelium.

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Retina identification based on the pattern of blood vessels using fuzzy logic

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  • Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú yđề tài: A new resorbable device for ligation of blood vessels - A pilot study...

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  • Chapter 19 - The cardiovascular system: Blood vessels (part b). Learning objectives of this chapter include: Define blood flow, blood pressure, and resistance, and explain the relationships between these factors; list and explain the factors that influence blood pressure, and describe how blood pressure is regulated; define hypertension. Describe its manifestations and consequences;...

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  • Chapter 19 - The cardiovascular system: Blood vessels (part c). After completing this unit, you should be able to: Trace the pathway of blood through the pulmonary circuit, and state the importance of this special circulation; describe the general functions of the systemic circuit; name and give the location of the major arteries and veins in the systemic circulation;...

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  • The art of imaging blood vessels in the human body is called angiography. Since its inception, physicians have benefited from the field of angiography imaging. This has helped them to diagnostically treat patients with various kinds of vascular diseases. Recently, because of the technology growth in fields of acquisition techniques, such as magnetic resonance, computer tomography, digital subtraction angiography, and ultrasound, the vascular imaging research community has become very interested. But acquisition is just one side of the coin.

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  • Thrombosis is the formation of a blood clot inside a blood vessel, obstructing the flow of blood through the circulatory system. When a blood vessel is injured, the body uses platelets (thrombocytes) and fibrin to form a blood clot to prevent blood loss. Alternatively, even when a blood vessel is not injured, blood clots may form in the body if the proper conditions present themselves. If the clotting is too severe and the clot breaks free, the traveling clot is now known as an embolus

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  • Vasculitis, an inflammation of blood vessels, can be idiopathic or secondary to other conditions. Infections may also mimic idiopathic vasculitis, and the differential diagnosis is of paramount importance for the practicing physician. Vasculitides are not rare diseases. In fact, some vasculitides, such as giant cell arteritis, cutaneous vasculitis, and ANCA-associated vasculitis are relatively common in everyday practice. Vasculitis may rapidly lead to organ failure, and put patient's life in danger....

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  • Thrombocytopenia Thrombocytopenia results from one or more of three processes: (1) decreased bone marrow production; (2) sequestration, usually in an enlarged spleen; and/or (3) increased platelet destruction. Disorders of production may be either inherited or acquired. In evaluating a patient with thrombocytopenia, a key step is to review the peripheral blood smear and to first rule out "pseudothrombocytopenia," particularly in a patient without an apparent cause for the thrombocytopenia. Pseudothrombocytopenia (Fig.

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  • Approach to the Patient: Thrombocytopenia The history and physical examination, results of the CBC, and review of the peripheral blood smear are all critical components in the initial evaluation of the thrombocytopenic patients (Fig. 109-2). The overall health of the patient and whether he/she is receiving drug treatment will influence the differential diagnosis. A healthy young adult with thrombocytopenia will have a much more limited differential diagnosis than an ill hospitalized patient who is receiving multiple medications.

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  • Hemostasis is a dynamic process in which the platelet and the blood vessel wall play key roles. Platelets become activated upon adhesion to von Willebrand factor (vWF) and collagen in the exposed subendothelium after injury. Platelet activation is also mediated through shear forces imposed by blood flow itself, particularly in areas where the vessel wall is diseased, and is also affected by the inflammatory state of the endothelium.

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  • Understanding human anatomy will help you achieve greater expressive ability in figure drawing. By understanding the many different aspects of the human form, you can better grasp how the figure works as a whole. For example, if you feel along the bone on the lower part of your jaw, you will notice that there is a small indentation about halfway between the chin and the back of the jaw. This indentation is to allow a blood vessel to pass under the jaw. The indentation helps to protect the vessel. The significance of this little indentation is that it affects the...

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  • Maximum success in skeletal surgery depends on adequate access to and exposure of the skeleton. Skeletal surgery is simplified and expedited when the involved parts are sufficiently exposed. In orthopedic surgery, especially of the appendicular skeleton, a basic rule is to select the most direct approach possible to the underlying bone. Thus, incisions are usually placed very near the area of interest while major nerves and blood vessels are retracted.

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  • Lasers have become integral to the modern practice of medicine in the fields of dermatology, plastic surgery, otolaryngology, and phlebology. With the skin being the most accessible organ in the body, many cutaneous disorders and conditions are ideally suited to treatment by laser technology. Lasers are safely used to destroy or alter epidermal and dermal processes and lesions comprising blood vessels or pigment.

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  • Drugs Acting on the Sympathetic Nervous System of the sympathetic division can be considered a means by which the body achieves a state of maximal work capacity as required in fight or flight situations. In both cases, there is a need for vigorous activity of skeletal musculature. To ensure adequate supply of oxygen and nutrients, blood flow in skeletal muscle is increased; cardiac rate and contractility are enhanced, resulting in a larger blood volume being pumped into the circulation. Narrowing of splanchnic blood vessels diverts blood into vascular beds in muscle.

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  • Diabetes mellitus is a complex, progressive disease, which is accompanied by multiple complications. It is a metabolic disorder of the endocrine system and listed among the most common disorders in both developed and developing countries. It has a global metabolic epidemic and it is estimated that the number of people affected by the disease will rise from the current 150 to 230 million by 2025. Hyperglycaemia is a characteristic feature of diabetes mellitus and chronic hyperglycaemia could lead to long-term complications in the eyes, kidneys, nerves, heart and blood vessels.

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  • Volume 2 of the four-volume The Facts On File Encyclopedia of Health and Medicine presents the body systems that nourish, cleanse, and protect the body. These are the systems of cells and fluids and the structures that transport them throughout the body. Though distinct in their functions and purposes, these systems overlap and integrate with one another in inseparable ways. The Cardiovascular System Volume 2 opens with “The Cardiovascular System,” the structures and functions that carry blood throughout the body.

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  • A stroke is a loss of blood flow in the brain. There are two kinds of stroke. One is an ischemic stroke. It happens when a blood vessel in the brain gets blocked. The other kind is called a hemorrhagic, or bleeding, stroke. This happens when a blood vessel breaks.

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  • The aim of this book is to provide an overview of recent developments in Kalman filter theory and their applications in engineering and scientific fields. The book is divided into 24 chapters and organized in five blocks corresponding to recent advances in Kalman filtering theory, applications in medical and biological sciences, tracking and positioning systems, electrical engineering and, finally, industrial processes and communication networks.

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