Muscle tissue

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  • Chapter 9 - Muscles and muscle tissue (part a) provides knowledge of muscle tissues and skeletal muscle. The following will be discussed in this chapter: Types of muscle tissue, special characteristics of muscle tissue, muscle functions, gross anatomy of a skeletal muscle, microscopic anatomy of a skeletal muscle fiber, sliding filament model of contraction, physiology of skeletal muscle fibers,...

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  • Chương 3: MÔ CƠ (Muscle Tissue) Mô cơ là một tổ chức chuyên hoá thích ứng với sự vận động của cơ thể nhờ khả năng co dãn của chúng. Trong cơ thể có ba loại cơ: Cơ trơn: co dãn chậm, đều, ít mệt mỏi. Cơ vân: co dãn nhanh, mạnh, nhưng chóng mệt mỏi. Cơ tim: co dãn mạnh, liên tục nhưng không mệt mỏi. Nghiên cứu chi tiết về cấu tạo từng loại cơ sẽ cho thấy sự sai khác giữa chúng và điều đó giải thích sự khác nhau trong tính chất vận động của mỗi loại....

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  • Skeletal muscle contractions power human body movements and are essential for maintaining stability. Skeletal muscle tissue accounts for almost half of the human body mass and, in addition to its power-generating role, is a crucial factor in maintaining homeostasis. Given its central role in human mobility and metabolic function, any deterioration in the contractile, material, and metabolic properties of skeletal muscle has an extremely important effect on human health.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: A swimming robot actuated by living muscle tissue

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: A swimming robot actuated by living muscle tissue

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  • This chapter presents the following content: Gross anatomy of a skeletal muscle, microscopic anatomy of a skeletal muscle fiber, sliding filament model of contraction, physiology of skeletal muscle fibers, contraction of a skeletal muscle, muscle metabolism, force of muscle contraction, velocity and duration of contraction, adaptations to exercise.

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  • The main contents of this chapter include all of the following: Force of muscle contraction, avelocity and duration of contraction, muscle fiber type, effects of exercise, effects of resistance exercise, the overload principle, smooth muscle, peristalsis, microscopic structure, innervation of smooth muscle,...and other contents.

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  • Classification Approximately 20 different groups of sarcomas are recognized on the basis of the pattern of differentiation toward normal tissue. For example, rhabdomyosarcoma shows evidence of skeletal muscle fibers with cross-striations; leiomyosarcomas contain interlacing fascicles of spindle cells resembling smooth muscle; and liposarcomas contain adipocytes. When precise characterization of the group is not possible, the tumors are called unclassified sarcomas. All of the primary bone sarcomas can also arise from soft tissues (e.g., extraskeletal osteosarcoma).

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  • We act in accordance with our self-image. This self-image—which, in turn, governs our every act—is conditioned in varying degree by three factors: heritage, education, and self-education. The part that is inherited is the most immutable. The biological endowment of the individual—the form and capacity of his nervous system, his bone structure, muscles, tissue, glands, skin, senses—are all determined by his physical heritage long before he has any established identity. His self-image develops from his actions and reactions in the normal course of experience....

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  • Mô cơ là một tổ chức chuyên hoá thích ứng với sự vận động của cơ thể nhờ khả năng co dãn của chúng. Trong cơ thể có ba loại cơ: Cơ trơn: co dãn chậm, đều, ít mệt mỏi. Cơ vân: co dãn nhanh, mạnh, nhưng chóng mệt mỏi. Cơ tim: co dãn mạnh, liên tục nhưng không mệt mỏi. Nghiên cứu chi tiết về cấu tạo từng loại cơ sẽ cho thấy sự sai khác giữa chúng và điều đó giải thích sự khác nhau trong tính chất vận động của mỗi loại....

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  • CƠ VÂN (TT) Tơ cơ bao gồm hai loại sợi, sợi actin nhỏ, mảnh và sợi myosin to, dày hơn. Hai loại sợi này xếp với nhau theo kiểu cài răng lược vao nhau và tạo nên các vân sáng - tối luân phiên theo một qui tắc nhất định, vì vậy chúng có tên là cơ vân. Sợi cơ co rút được nhờ sự đâm sâu của các sợi actin vào vùng cài răng lược.

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  • The pelvic floor consists of muscles and connective tissue. In the past, the components’ relative contribution to the structural support of the pelvic floor and its functions has been a subject of controversy (Corton 2009). With increasing age women can develop vaginal and pelvic organ prolapse as well as symptoms such as stress urinary incontinence, voiding dysfunction, urgency and frequency and nocturia, and may also develop fecal incontinence, obstructive defecation and pelvic pain (Petros 2010).

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  • In 1930 Ferguson modified the technique and published his series of 280 patients who had prostate needle aspiration biopsy using an 18-gauge needle via the transperineal approach and was able to remove adequate tissue in 78 to 86% of his cases (Ferguson, 1930) (figure 6). The patient was placed in the lithotomy position and local anaesthetic was infiltrated just lateral to the median raphe 1cm anterior to the anus. The index finger of the left hand was introduced into the rectum guiding an 18 gauge needle introduced into the perineum taking care to avoid the rectum and urethra....

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  • After 40 the muscle fibbers shrink and replaced slowly with a tough fibrous tissue.Muscle changes often begin in the 40s in women. Lipofuscin (an age-related pigment) and fat are deposited in muscle tissue. This is most noticeable in the hands, which may appear thin and bony. Muscles may become rigid with age and may lose tone, even with regular exercise. Loss of muscle mass reduces strength which contributes to fatigue, weakness, and reduced activity tolerance. Exercise is one of the best ways to slow or prevent problems with the muscles, joints, and bones....

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  • Babies exposed to carbon monoxide during the maturation of their organs may suffer permanent changes to those organs. Studies using newborn rats showed that carbon monoxide exposure could cause changes in the heart muscle tissue. This is turn could increase the severity of effects of artery constrictions when they became adults. Other animal studies have shown that long-term carbon monoxide exposure can contribute to a disease called ventricular hypertrophy, in which the cells of the heart's ventricle chambers are enlarged and possibly weakened.

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  • This literature review focuses on meat tenderness and flavor, which are most important in determining meat quality, but difficultly predictable and maintained. Meat tenderness primarily relates to muscle tissues while meat flavor is mostly resulted from fatty tissues.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Erythropoietin improves skeletal muscle microcirculation and tissue bioenergetics in a mouse sepsis model...

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  • The present book is the final milestone in the radioecology programme, RAD, carried out from 1990 to 1993 under the Nordic Committee for Nuclear Safety Research, NKS. This work was done in parallel to three other NKS programmes: Reactor safety (SIK), Waste and decommissioning (KAN), and Emergency preparedness (BER). The NKS was established in 1966 and was financed by the Nordic Council of Ministers from 1977 to 1989.

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  • In vertebrates, phosphocreatine and ATP are continuously interconverted by the reversible reaction of creatine kinase in accordance with cellular energy needs. Sarcoma tissue and its normal counterpart, creatine-rich skel-etal muscle, are good source materials to study the status of creatine and creatine kinase with the progression of malignancy.

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  • The lipolysis stimulated receptor (LSR) recognizes apo-lipoprotein B/E-containing lipoproteins in the presence of free fattyacids, and is thought tobe involved in the clearance of triglyceride-rich lipoproteins (TRL). The distribution of LSR in mice was studied by Northern blots, quantitative PCR and immunofluorescence. In the adult,LSRmRNA was detectable in all tissues tested except muscle and heart, and was abundant in liver, lung, intestine, kidney, ovaries and testes. During embryogenesis, LSR mRNA was detectable at 7.

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