conducting bundle

См. также в других словарях:

• bundle of His — his n a slender bundle of modified cardiac muscle that passes from the atrioventricular node in the right atrium to the right and left ventricles by way of the septum and that maintains the normal sequence of the heartbeat by conducting the wave… …   Medical dictionary

• bundle branch block — a defect in the specialized conducting tissue of the heart (see arrhythmia) that is recognized as an electrocardiographic abnormality. Left or right bundle branch blocks, affecting the respective ventricles, may be seen. Occasionally both left… …   Medical dictionary

• bundle branch block — a defect in the specialized conducting tissue of the heart (see arrhythmia) that is identified on an electrocardiogram. Right bundle branch block is a normal variant in children and young adults, but may reflect chronic lung disease or ischaemic… …   The new mediacal dictionary

• atrioventricular bundle — noun a bundle of modified heart muscle that transmits the cardiac impulse from the atrioventricular node to the ventricles causing them to contract • Syn: ↑bundle of His, ↑atrioventricular trunk, ↑truncus atrioventricularis • Hypernyms: ↑cardiac… …   Useful english dictionary

• Vascular bundle — A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in vascular tissue, which exists in two forms: xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will… …   Wikipedia

• atrioventricular bundle — Anat. a bundle of specialized muscle fibers regulating the heartbeat by conducting impulses from the right atrium to the ventricles. Also called bundle of His. * * * …   Universalium

• atrioventricular bundle — a′trioventric′ular bun dle n. anat. a bundle of conducting muscle fibers in the heart leading from the atrioventricular node to the ventricles Also called bundle of His …   From formal English to slang

• vascular bundle — n. Bot. an isolated unit of the conducting system of vascular plants, consisting of xylem and phloem, frequently with other interspersed cells or a sheath of thick walled cells …   English World dictionary

• vascular bundle — Bot. a longitudinal arrangement of strands of xylem and phloem, and sometimes cambium, that forms the fluid conducting channels of vascular tissue in the rhizomes, stems, and leaf veins of vascular plants, the arrangement varying with the type of …   Universalium

• vascular bundle — noun Botany a strand of conducting vessels in the stem or leaves of a plant, typically with phloem on the outside and xylem on the inside …   English new terms dictionary

• vascular bundle — vas′cular bun′dle n. bot any of the strands of the conducting channels in vascular plants composed of xylem and phloem in various structural arrangements • Etymology: 1880–85 …   From formal English to slang