Xem 1-20 trên 276 kết quả Disordered systems
  • Drugs Acting on Motor Systems spinal disorders. Benzodiazepines enhance the effectiveness of the inhibitory transmitter GABA (p. 226) at GABAA receptors. Baclofen stimulates GABAB receptors. !2-Adrenoceptor agonists such as clonidine and tizanidine probably act presynaptically to inhibit release of excitatory amino acid transmitters. The convulsant toxins, tetanus toxin (cause of wound tetanus) and strychnine diminish the efficacy of interneuronal synaptic inhibition mediated by the amino acid glycine (A).

    pdf12p bigbaby87 04-09-2010 49 9   Download

  • Harrison's Internal Medicine Chapter 29. Disorders of the Eye The Human Visual System The visual system provides a supremely efficient means for the rapid assimilation of information from the environment to aid in the guidance of behavior. The act of seeing begins with the capture of images focused by the cornea and lens upon a light-sensitive membrane in the back of the eye, called the retina. The retina is actually part of the brain, banished to the periphery to serve as a transducer for the conversion of patterns of light energy into neuronal signals.

    pdf5p ongxaemnumber1 29-11-2010 44 9   Download

  • Intelligent systems, known as expert systems, serve to this purpose in the extent that they have signed as facilitators in this process. These are systems that are based on expert knowledge, on any subject, in order to emulate human expertise in the specific field. To obtain this knowledge, the knowledge engineers, also called software engineers, need to develop methodologies for intelligent systems. In this area there is still no unified methodology that provides effective methods, notations and tools to aid in development....

    pdf128p crius75 02-01-2013 19 8   Download

  • The cause of macroglobulinemia is unknown. The disease is similar to myeloma in being slightly more common in men and occurring with increased incidence with age (median 64 years). There have been reports that the IgM in some patients with macroglobulinemia may have specificity for myelin-associated glycoprotein (MAG), a protein that has been associated with demyelinating disease of the peripheral nervous system and may be lost earlier and to a greater extent than the better known myelin basic protein in patients with multiple sclerosis.

    pdf5p thanhongan 07-12-2010 34 7   Download

  • A two-volume set designed for allied health students, patients, and the general public. The collection of alphabetically arranged entries covers rare and well-known neurological disorders, related medications and drug classes, patient and caregiver support, as well as background articles on the brain and nervous system anatomy"--

    pdf518p mientrung102 30-01-2013 16 7   Download

  • Serum β2-microglobulin is a protein of 11,000 mol wt with homologies with the constant region of immunoglobulins that is the light chain of the class I major histocompatibility antigens (HLA-A, -B, -C) on the surface of every cell. Serum β2-microglobulin is the single most powerful predictor of survival and can substitute for staging. Patients with β2-microglobulin levels 0.004 g/L only 12 months. Serum β2-microglobulin and albumin levels are the basis for a three-stage International Staging System (ISS).

    pdf5p thanhongan 07-12-2010 27 6   Download

  • A two-volume set designed for allied health students, patients, and the general public. The collection of alphabetically arranged entries covers rare and well-known neurological disorders, related medications and drug classes, patient and caregiver support, as well as background articles on the brain and nervous system anatomy"--

    pdf507p mientrung102 30-01-2013 16 6   Download

  • Harrison's Internal Medicine Chapter 30. Disorders of Smell, Taste, and Hearing Smell The sense of smell determines the flavor and palatability of food and drink and serves, along with the trigeminal system, as a monitor of inhaled chemicals, including dangerous substances such as natural gas, smoke, and air pollutants. Olfactory dysfunction affects ~1% of people under age 60 and more than half of the population beyond this age. Definitions Smell is the perception of odor by the nose. Taste is the perception of salty, sweet, sour, or bitter by the tongue.

    pdf6p ongxaemnumber1 29-11-2010 41 5   Download

  • Senescence is a biological process that causes a progressive deterioration of structure and function of all organs chronologically. Recent studies have revealed the detailed molecular mechanisms of senescence using cell culture system and experimental organisms. It is thought that senescence is a potential cause for the development of various age-related disorders such as cancer, cardiovascular and neurodegenerative disorders.

    pdf158p japet75 25-02-2013 26 5   Download

  • Neutrophil travel through the pulmonary capillaries is dependent on neutrophil deformability. Neutrophil rigidity (e.g., caused by C5a) enhances pulmonary trapping and response to pulmonary pathogens in a way that is not so dependent on cell-surface receptors. Intraalveolar chemotactic factors, such as those caused by certain bacteria (e.g., Streptococcus pneumoniae) lead to diapedesis of neutrophils from the pulmonary capillaries into the alveolar space. Neutrophil interaction with the endothelium of the systemic postcapillary venules is dependent on molecules of attachment.

    pdf5p konheokonmummim 03-12-2010 27 4   Download

  • Disorders of the Mononuclear Phagocyte System Many disorders of neutrophils extend to mononuclear phagocytes. Thus, drugs that suppress neutrophil production in the bone marrow can cause monocytopenia. Transient monocytopenia occurs after stress or glucocorticoid administration. Monocytosis is associated with tuberculosis, brucellosis, subacute bacterial endocarditis, Rocky Mountain spotted fever, malaria, and visceral leishmaniasis (kala azar).

    pdf6p konheokonmummim 03-12-2010 28 4   Download

  • Role of the hypothalamic-pituitary-gonadal axis in the etiology of amenorrhea. Gonadotropin-releasing hormone (GnRH) secretion from the hypothalamus stimulates follicle-stimulating hormone (FSH) and luteinizing hormone (LH) secretion from the pituitary to induce ovarian folliculogenesis and steroidogenesis. Ovarian secretion of estradiol and progesterone controls the shedding of the endometrium, resulting in menses and, in combination with the inhibins, provides feedback regulation of the hypothalamus and pituitary to control secretion of FSH and LH.

    pdf5p konheokonmummim 30-11-2010 48 3   Download

  • The central mechanism of DIC is the uncontrolled generation of thrombin by exposure of the blood to pathologic levels of tissue factor (Fig. 110-3). Simultaneous suppression of physiologic anticoagulant mechanisms and abnormal fibrinolysis further accelerate the process. Together these abnormalities contribute to systemic fibrin deposition in small and mid-sized vessels. The duration and intensity of the fibrin deposition can compromise the blood supply of many organs, especially the lung, kidney, liver, and brain, with consequent organ failure.

    pdf5p thanhongan 07-12-2010 23 2   Download

  • Coagulation Disorders Associated with Liver Failure The liver is central to hemostasis because it is the site of synthesis and clearance of most procoagulant and natural anticoagulant proteins and of essential components of the fibrinolytic system. Liver failure is associated with a high risk of bleeding due to deficient synthesis of procoagulant factors and enhanced fibrinolysis. Thrombocytopenia is common in patients with liver disease and may be due to congestive splenomegaly (hypersplenism), or immune-mediated shortened platelet life span (primary biliary cirrhosis).

    pdf5p thanhongan 07-12-2010 24 2   Download

  • The main method of cognition of the performance of biological systems is their mathematical modeling. The essence of this method should reflect the principle of optimization in biology[9]. Any biosystem cannot function if its energy consumption is inadequately high. The same is applicable to the blood circulatory system. Its main function is to transport blood throughout the body in order to maintain the proper gaseous exchange, deliver important substances to viscera and tissues in living body and remove decay products.

    pdf491p bachduong1311 12-12-2012 21 2   Download

  • The ability to walk safely, easily, and in an aesthetically pleasing manner is a skill learned early and highly prized. Although it is typically taken for granted, gait is key to mobility and functional independence and at the core of our ability to carry out many activities of daily living. In older adults and patients with neurological deficits, ease and safety in walking may become compromised, and gait is often viewed as abnormal, i.e., as a disorder. While not an inevitable part of aging, gait disorders are common among older adults and in patients with neurological disease.

    pdf436p crius75 04-01-2013 16 2   Download

  • Adaptive behavior assessment system–II technical report provides a comprehensive norm-referenced assessment of the adaptive skills of individuals ages birth to 89 years. The clinician can use the ABAS–II to diagnose and classify disabilities and disorders; identify an individual’s strengths and limitations; and to document and monitor the individual’s performance over time. The ABAS–II provides for the assessment of an individual by multiple respondents (e.g.

    pdf5p thuytrang_6 04-08-2015 22 2   Download

  • Tham khảo sách 'diseases and disorders chronic: fatigue syndrome', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf96p crius75 04-01-2013 20 1   Download

  • The global burden of neuropsychiatric disorders is substantial. When measured by years lived with disability and years lost due to premature death in disability-adjusted life years (DALYs), psychiatric and neurological conditions accounted for 13% of the global burden of disease in 2002 (WHO, 2004). Despite the huge burden of mental illness, few human and financial resources are directed towards mental health care. Mental health spending in many countries of the world is less than 1% of the health budget, and the number of mental health professionals is grossly inadequate (WHO, 2005a)....

    pdf105p crius75 09-01-2013 30 1   Download

  • This chapter includes contents: Label a diagram of the urinary system, distinguish between acute and chronic renal failure, outline the pathophysiology of renal failure, identify the signs and symptoms of renal failure, describe the process of hemodialysis and peritoneal dialysis, describe the signs and symptoms and care of emergent conditions associated with dialysis

    pdf55p tangtuy06 01-04-2016 2 1   Download

Đồng bộ tài khoản