Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Strain along fibers in the middle and one end of the muscle for all 8 shortening examples. (a) and (b) illustrate constant volume only (hydrostatic fluid), (c) and (d) illustrate softer elastic material, (e) and (f) illustrate stiffer elastic material, (g) and (h) illustrate vertically reinforced material with different pennation angles.
