|
Bekhterev–Mendel Reflex
The Bekhterev–Mendel reflex, also known as the Mendel reflex or Mendel–Bekhterev reflex, is a clinical sign found in patients with pyramidal tract lesions. Percussion of the dorsum of the foot causes flexion, or downward movement, of the second to the fifth toes in patients with pyramidal tract lesions, whereas percussion of the dorsum of the foot in normal patients causes extension of the toes. It is analogous to the Bekhterev–Jacobsohn reflex in the upper limb. The reflex is named after Vladimir Bekhterev Vladimir Mikhailovich Bekhterev ( rus, Влади́мир Миха́йлович Бе́хтерев, p=ˈbʲextʲɪrʲɪf; January 20, 1857 – December 24, 1927) was a Russian neurologist and the father of objective psychology. He is best know ... and Kurt Mendel. References Medical signs Reflexes {{med-sign-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medical Sign
Signs and symptoms are the observed or detectable signs, and experienced symptoms of an illness, injury, or condition. A sign for example may be a higher or lower temperature than normal, raised or lowered blood pressure or an abnormality showing on a medical scan. A symptom is something out of the ordinary that is experienced by an individual such as feeling feverish, a headache or other pain or pains in the body. Signs and symptoms Signs A medical sign is an objective observable indication of a disease, injury, or abnormal physiological state that may be detected during a physical examination, examining the patient history, or diagnostic procedure. These signs are visible or otherwise detectable such as a rash or bruise. Medical signs, along with symptoms, assist in formulating diagnostic hypothesis. Examples of signs include elevated blood pressure, nail clubbing of the fingernails or toenails, staggering gait, and arcus senilis and arcus juvenilis of the eyes. Indicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Motor Neurone Lesion
An upper motor neuron lesion (also known as pyramidal insufficiency) Is an injury or abnormality that occurs in the neural pathway above the anterior horn cell of the spinal cord or motor nuclei of the cranial nerves. Conversely, a lower motor neuron lesion affects nerve fibers traveling from the anterior horn of the spinal cord or the cranial motor nuclei to the relevant muscle(s). Upper motor neuron lesions occur in the brain or the spinal cord as the result of stroke, multiple sclerosis, traumatic brain injury, cerebral palsy, atypical parkinsonisms, multiple system atrophy, and amyotrophic lateral sclerosis. Symptoms Changes in muscle performance can be broadly described as the upper motor neuron syndrome. These changes vary depending on the site and the extent of the lesion, and may include: * Muscle weakness. known as 'pyramidal weakness' * Decreased control of active movement, particularly slowness * Spasticity, a velocity-dependent change in muscle tone * Clasp- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percussion (medicine)
Percussion is a technique of clinical examination. Overview Percussion is a method of tapping on a surface to determine the underlying structures, and is used in clinical examinations to assess the condition of the thorax or abdomen. It is one of the four methods of clinical examination, together with inspection, palpation, auscultation, and inquiry. It is done with the middle finger of one hand tapping on the middle finger of the other hand using a wrist action. The nonstriking finger (known as the pleximeter) is placed firmly on the body over tissue. When percussing boney areas such as the clavicle, the pleximeter can be omitted and the bone is tapped directly such as when percussing an apical cavitary lung lesion typical of tuberculosis. There are two types of percussion: direct, which uses only one or two fingers; and indirect, which uses only the middle/flexor finger. Broadly classifying, there are four types of percussion sounds: resonant, hyper-resonant, stony dull or dul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsum (biology)
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek language, Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axis, anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal. Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that is radially symmetrical will have no anterior surface, but can still have a description that a part is close to the middle ("proximal") or further from the middle ("distal"). International organisations have determined vocabularies that are often used as standard vocabular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flexion
Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relative to the anatomical position of the body parts involved. Anatomists and others use a unified set of terms to describe most of the movements, although other, more specialized terms are necessary for describing unique movements such as those of the hands, feet, and eyes. In general, motion is classified according to the anatomical plane it occurs in. ''Flexion'' and ''extension'' are examples of ''angular'' motions, in which two axes of a joint are brought closer together or moved further apart. ''Rotational'' motion may occur at other joints, for example the shoulder, and are described as ''internal'' or ''external''. Other terms, such as ''elevation'' and ''depression'', describe movement above or below the horizontal plane. Many anatomica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extension (kinesiology)
Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relative to the anatomical position of the body parts involved. Anatomists and others use a unified set of terms to describe most of the movements, although other, more specialized terms are necessary for describing unique movements such as those of the hands, feet, and eyes. In general, motion is classified according to the anatomical plane it occurs in. ''Flexion'' and ''extension'' are examples of ''angular'' motions, in which two axes of a joint are brought closer together or moved further apart. ''Rotational'' motion may occur at other joints, for example the shoulder, and are described as ''internal'' or ''external''. Other terms, such as ''elevation'' and ''depression'', describe movement above or below the horizontal plane. Many anatomica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bekhterev–Jacobsohn Reflex
The Bekhterev–Jacobsohn reflex, or Jacobsohn's finger flexion sign, is a clinical sign found in patients with pyramidal tract lesions of the upper limb. In this condition, stroking the dorsum of the forearm, in the area of the distal radius, with the arm supine causes abduction of the hand and flexion of the fingers. It is analogous to the Bekhterev–Mendel reflex in the lower limb. The reflex is named after Vladimir Bekhterev and Louis Jacobsohn-Lask Louis Jacobsohn-Lask (born Louis Jacobsohn; 2 March 1863, in Bromberg – 17 May 1941, in Sevastopol) was a German neurologist and neuroanatomist. He studied medicine at the University of Berlin under Heinrich Wilhelm Waldeyer, Rudolf Virchow, .... References Medical signs Reflexes {{med-sign-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vladimir Bekhterev
Vladimir Mikhailovich Bekhterev ( rus, Влади́мир Миха́йлович Бе́хтерев, p=ˈbʲextʲɪrʲɪf; January 20, 1857 – December 24, 1927) was a Russian neurologist and the father of objective psychology. He is best known for noting the role of the hippocampus in memory, his study of reflexes, and Bekhterev’s disease. Moreover, he is known for his competition with Ivan Pavlov regarding the study of conditioned reflexes. Early life Vladimir Bekhterev was born in Sorali, a village in the Vyatka Governorate of the Russian Empire between the Volga River and the Ural Mountains. V. M. Bekhterev's father – Mikhail Pavlovich – was a district police officer; his mother, Maria Mikhailovna – was a daughter of a titular councilor, was educated at a boarding school which also provided lessons of music and the French language. Beside Vladimir they had two more sons in the family: Nikolai and Aleksandr, older than he by 6 and 3 years respectively. In 1864 the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kurt Mendel
Kurt Mendel (January 27, 1874 - 1946) was a German neurologist who was a native of Berlin, of Jewish origins. Sander Gilman, ''Jewish Frontiers: Essays on Bodies, Histories, and Identities'', Springer (2003), p. 103 In 1897 he received his doctorate from Kiel, and in 1899 went to work at the policlinic of Emanuel Mendel (1839-1907) in Berlin. Kurt Mendel was an editor of ''Neurologisches Zentralblatt''. With Russian neurophysiologist Vladimir Bekhterev (1857-1927), the eponymous Mendel-Bekhterev reflex is named, which is flexion of the toes caused by percussion of the upper surface of the foot, a sign of lesions of the pyramidal tract. Mendel was a critic of Sigmund Freud (1856-1939). He mentioned that Freud's psychoanalytical teachings offered a valuable perspective, however he believed that they contained excessive exaggeration and fantasy. He was also repulsed by some aspects of Freud's views on sexuality. Mendel was an outspoken opponent of Hermann Oppenheim (1858-1919), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medical Signs
Signs and symptoms are the observed or detectable signs, and experienced symptoms of an illness, injury, or condition. A sign for example may be a higher or lower temperature than normal, raised or lowered blood pressure or an abnormality showing on a medical scan. A symptom is something out of the ordinary that is experienced by an individual such as feeling feverish, a headache or other pain or pains in the body. Signs and symptoms Signs A medical sign is an objective observable indication of a disease, injury, or abnormal physiological state that may be detected during a physical examination, examining the patient history, or diagnostic procedure. These signs are visible or otherwise detectable such as a rash or bruise. Medical signs, along with symptoms, assist in formulating diagnostic hypothesis. Examples of signs include elevated blood pressure, nail clubbing of the fingernails or toenails, staggering gait, and arcus senilis and arcus juvenilis of the eyes. Indicatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
