Kinoplasm
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Kinoplasm is a historical biological term used in the 1930s to describe the part of protoplasm associated with cell contraction and movement, such as in muscle cells, flagella, and cilia. Proposed by Nikolai Koltsov, it contrasted with the static thecoplasm.
Encyclopedia entry (1928–1936)
KINOPLASM, the part of protoplasm connected in one way or another with the contraction and corresponding movements of a cell or its parts. The term kinoplasm is used by Nikolai Koltsov to designate the liquid protoplasm that makes up part of the contractile elements (muscle cells, contractile stalks, flagella, and cilia in protozoa), the contraction of which occurs due to surface changes in the kinoplasm. Kinoplasm is contrasted with thecoplasm, which sometimes forms a sheath around it; elastic fibrils have been described at the boundary between the kinoplasm and thecoplasm.
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“Kinoplasm.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/kinoplasm/