Purkinje fibers are a vital component in the functioning of the heart, and are thus, vital for our survival. They are a part of the relaying system of electrical signals in the heart, which determines the rate at which the cardiac muscles contract and relax, or in other words, the rate at which the heart ‘beats’.

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Perjunkie fibers

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Engelsk definition. Modified cardiac muscle fibers composing the terminal portion of the heart conduction system. Svenska TERMER PÅ ANDRA SPRÅK.

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protein degeneration främst av cerebellära Purkinje celler och neuroner inom en fiber under en längre tid är hård i den elektriskt stimulerade hörselnerven .

Purkinje fiber A cardiac muscle cell beneath the endocardium of the ventricles of the heart. These extend from the bundle branches to the ventricular myocardium and form the last part of the cardiac conduction system. See also: Purkinje, Johannes E. von The Purkinje fibers are further specialized to rapidly conduct impulses (numerous sodium ion channels and mitochondria, fewer myofibrils than the surrounding muscle tissue). Purkinje fibers take up stain differently than the surrounding muscle cells, and, on a slide, they often appear lighter and larger than their neighbors. Purkinje fibers differ in numerous ways from working cardiomyocytes. In general, Purkinje cells are larger than cardiomyocytes and are distinguishable histologically. The transverse tubules that are present in cardiomyocytes are absent in Purkinje cells.

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After muscle fibers contract, they cannot respond to an electrical impulse for a short period of time known as the refractory period. During this time, the muscle fibers repolarize and return to a resting state.

Both basket and stellate cells (found in the cerebellar molecular layer ) provide inhibitory (GABAergic) input to the Purkinje cell, with basket cells synapsing on the Purkinje cell axon initial segment and stellate cells onto the dendrites.
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Mohl är fullkomligt ense med Purkinje derom , att fibrerne äro i en noga förening och hopväxning med Endotheciicellernes väggar . Han anmärker , att Purkinje

The waves of depolarization ultimately spread to adjacent myocardial cells through the intercalated discs. The heart also has special Purkinje fibers, or “pacemaker” cells, which initiate electrical signals regulate systematic chamber contraction.

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Purkinje fibers are specialized conductive myocardial cells with few myofibrils that promotes the rapid conduction of the impulse through the ventricles. They are larger than the normal myocardial fibers. The waves of depolarization ultimately spread to adjacent myocardial cells through the intercalated discs.

selektiv förstärkning av enskilda klättrande fiberinsatser till Purkinje-celler under formation onto PCs from parallel fibres (PFs), the other excitatory input to PCs 50 . The Purkinje fibers (/ pɜːrˈkɪndʒi / pur-KIN-jee; Purkinje tissue or subendocardial branches) are located in the inner ventricular walls of the heart, just beneath the endocardium in a space called the subendocardium. The Purkinje fibers are specialized conducting fibers composed of electrically excitable cells. Purkinje fibers are special fibers that are located in the atrioventricular, or AV, bundle of the heart.

then travels to Bachmann's Bundle, AV node, bundle of His, Right and Left Bundle Branches (left anterior and posterior fascicle) and lastly to Purkinje fibers.

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finska. Purkinjen syy. Purkinjen säie.