EXSS1029 Study Guide - Final Guide: Sarcomere, Myofibril, Endomysium

• School: University of Sydney
• Department: Exercise and Sport Science
• Course: EXSS1029
• Professor: Professor

Document Summary

Exss1029 muscle mechanics and training: adding up active forces and movements. 3. 1 describe or sketch the direction of forces applied by the components of the sarcomere, specifically the direction of the myosin force and the load force. Myosin force always towards the thick filament centre. Thin filament only designed to transmit tensile pulling forces not compressing pushing forces. By pulling on thin filament the myosin will transmit the force to the z disc and from there onto the external load. Load is transmitted onto the tendon by connection of the myofibril end onto the cell membrane. From there onto the cells membrane connection to the collagen matric outside the cell (endomysium) which is continuous with the tendon itself. Z disc to the right of highlighted sarcomere is connected to another sarcomere (not another cell end) Highlighted thick filament must reply on the sarcomere to the right to transmit the force to the load on the right.