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an articulation in which the rounded head of one bone fits into a cuplike cavity of the other and admits movement in any direction
a usually translucent somewhat elastic tissue that composes most of the skeleton of vertebrate embryos and except for a small number of structures is replaced by bone during ossification in the higher vertebrates
a movement at a synovial joint in which the distal end of the bone moves in a circle while the proximal end remains relatively stable
an unbending movement around a joint in a limb that increases the angle between the bones of the limb at the joint
an unbending movement around a joint in a limb that decreases the angle between the bones of the limb at the joint
translucent bluish white cartilage consisting of cells embedded in an apparently homogenous matrix, present in joints and respiratory passages, and forming most of the fetal skeleton
the point of contact between elements of an animal skeleton whether moveable or rigidly fixed together with the surrounding and supporting parts
the space between the articulating bones of a synovial joint, filled with synovial fluid
secretion of synovial membrances that lubricates joints and nourishes articular cartilage
a fully moveable joint in which the synovial cavity is present between two articulating bones
striated muscle fibers that form the wall of the heart; stimulated by the intrinsic conduction system and autonomic motor neurons
carpal tunnel syndrome
a condition caused by compression of the median nerve in the carpal tunnel and characterized especially by weakness, pain, and disturbances of sensation in the hand and fingers
the delicate connective tissue surrounding the individual muscular fibers within the smallest bundles
an organ composed of one of the three types of muscular tissue, specialized for contraction to produce voluntary and involuntary movements of parts of the body
a threadlike structure, extending longitudinally through a muscle fiber consisting mainly of thick filaments and thin filaments
a cordlike bundle of neuronal axons and/or dendrites and associated connective tissue coursing together outside the central nervous system
the connective-tissue sheath that surrounds a muscle and forms sheaths for the bundles of muscle fibers
an organ specialized for contraction, composed of striated muscle fibers, supported by connective tissue, attached to bone by a tendon or aponeurosis, and stimulated by comatic motor neurons
sliding filament mechanism
the explanation of how thick and thin filaments slide relative to one another during striated muscle contraction to decrease sarcomere length
a tissue specialized for contraction, composed of smooth muscle fibers, located in the walls of hollow internal organs, and innervated by the autonomic motor neurons
a protein of muscle that forms a complex with troponin regulating the interaction of actin and myosin in muscular contraction
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