skeletal muscle/general: epimysium, fascicle, perimysium, endomysium, muscle fiber, myofibril eMedicine is an online clinical medical knowledge base that was founded in 1996. ... A thin section of lung tissue stained with hematoxylin and eosin. ... Bold text == A top-down view of skeletal muscle Muscle (from Latin musculus little mouse[1]) is contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. ... A top-down view of skeletal muscle Skeletal muscle is a type of striated muscle, attached to the skeleton. ... Epimysium is a layer of connective tissue which ensheaths the entire muscle. ... In anatomy, a fascicle is a bundle of skeletal muscle fibers surrounded by connective tissue. ... The endomysium, literally meaning within the muscle, is a layer of connective tissue that ensheaths a muscle fiber and is composed mostly from reticular fibers. ... Global view of a neuromuscular junction: 1. ... A diagram of the structure of a Myofybril Myofibrils (obsolete term: sarcostyles) are cylindrical organelles, found within muscle cells. ...

sarcomere (a, i, and h bands; z and m lines), myofilaments (thin filament/actin, thick filament/myosin, elastic filament/titin), tropomyosin, troponin (T, C, I) Image of sarcomere A sarcomere is the basic unit of a cross striated muscles myofibril. ... See sarcomere. ... G-Actin (PDB code: 1j6z). ... Myosin is a motor protein filament found in muscle tissue. ... Sliding filament model of muscle contraction. ... This article or section is in need of attention from an expert on the subject. ... Troponin is a protein complex that confers calcium sensitivity to muscle cells. ... Troponin Troponin T is a part of the troponin complex. ... Troponin Troponin C is a part of the troponin complex. ... Troponin Troponin I is a part of the troponin complex. ...

neuromuscular junction, intrafusal muscle fiber, extrafusal muscle fiber, motor unit, muscle spindle, sliding filament mechanism A neuromuscular junction is the junction of the axon terminal of a motoneuron with the motor end plate, the highly-excitable region of muscle fiber plasma membrane responsible for initiation of action potentials across the muscles surface. ... Intrafusal fibers are muscle fibers that comprise the muscle spindle. ... Extrafusal muscle fibers are served by axons of the alpha motor neurons. ... A motor unit is a group of cells under the control of a single motor neuron; groups of motor units work together, as a single muscle. ... A muscle spindle is a specialized muscle structure innervated by both sensory and motor neuron axons. ... The sliding filament mechanism is a process used by muscles to contract. ...

myoblast, satellite cells, sarcoplasm, sarcolemma, sarcoplasmic reticulum, T-tubule Myoblasts are a type of stem cells that exist in muscles. ... Satellite cells are mononuclear progenitor cells found in mature muscle between the basal lamina and sarcolemma. ... The Sarcoplasm of a muscle fiber is comparable to the cytoplasm of other cells, but it houses unusually large amounts of glycosomes (granules of stored glycogen) and significant amounts of myoglobin, an oxygen binding protein. ... The name sarcolemma is used to describe the cell membrane of a muscle fibre or muscle cell. ... ... A T-tubule (or Transverse tubule), is a deep invagination of the plasma membrane found in skeletal and cardiac muscle cells. ...

cardiac muscle: myocardium, intercalated disc Cardiac muscle is a type of involuntary mononucleated, or uninucleated, striated muscle found exclusively within the heart. ... Myocardium is the muscular tissue of the heart. ... An intercalated disc is an undulating double membrane separating adjacent cells in cardiac muscle fibers. ...

smooth muscle: calmodulin, vascular smooth muscle Cultured Smooth muscle of the aorta. ... oommen sir is a fool. ... Vascular smooth muscle refers to the particular type of smooth muscle found within, and composing the majority of the wall of blood vessels. ...