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EXPERIMENTS ON CONTRACTION OF WHITE CONNECTIVE TISSUE FIBRES
Author(s) -
Tidmarsh C. J.,
Tait John
Publication year - 1925
Publication title -
quarterly journal of experimental physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0370-2901
DOI - 10.1113/expphysiol.1925.sp000364
Subject(s) - tendon , contraction (grammar) , anatomy , connective tissue , chemistry , biology , medicine , endocrinology , pathology
1. In heat contraction of mouse‐tail tendon, localised swellings commence at certain points along the tendon. A partially contracted tendon has the appearance of a knotted cord with normal portions of tendon between the knots. Only when contraction is maximal is the whole tendon swollen. 2. Immersion of the tendon in solutions of CaCl 2 markedly affects the temperature at which contraction is induced. The higher the concentration of calcium salt, the lower the temperature at which the tendon will contract; with 48 per cent. of CaCl 2 the tendon will contract at 0°C. The relation between concentration and temperature is approximately linear. 3. Immersion in solutions of BaCl 2 likewise affects the temperature at which contraction is induced. Thirty per cent. BaCl2 causes contraction at 38°C. The relation between concentration and temperature is again linear. The expenses of this research were defrayed by a grant from the James Cooper Fund of M'Gill University for Research in Experimental Medicine.