On the minute structure and movements of voluntary muscle / By William Bowman, Esq., Demonstrator of Anatomy in King's College, London, and Assistant Surgeon to the King's College Hospital.

  • Bowman, William, Sir, 1816-1892.
Date:
1840
Catalogue details

Licence: Public Domain Mark

Credit: On the minute structure and movements of voluntary muscle / By William Bowman, Esq., Demonstrator of Anatomy in King's College, London, and Assistant Surgeon to the King's College Hospital. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    Fig. 88, Shows four stages illustrative of contraction, seen on one occasion in a primitive fasciculus of a Skate. The first state is that of rest; in the second, the strise on one margin are approximated in sets, the contrac- tions at the same time moving onwards. In the third state, the contrac- tions implicate the whole breadth of the fasciculus, and still advance. In the fourth state, the striae are everywhere approximated, the fasciculus is more opake and thrown into close rugae. The existence of these rugae is an accidental circumstance, resulting from the contraction of neighbour- ing fasciculi (not represented in the figure) drawing the ends of this one nearer together than they are brought by its own contraction. Fig. 89. Margin of a large fasciculus from a young Crab, in water, showing the first stage of contraction.