Muscle mechanics - Muscle mechanics In a simple arrangement...

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Muscle mechanics In a simple arrangement of two bones joined by a muscle the pull of the muscle can be resolved into a. swing - tending to move the mobile bone b. shunt - compressing the joint c. spin - rotating the mobile bone The relative size of each component is varied by moving the attachments of the muscle. Obviously the largest swing is best for initiating movement - spurt muscle: large shunt will allow a mobile bone to be loaded by compressing the joint and large spin can be used for prime movement or as a synergistic soaker up of unwanted rotation. Nerves and muscles Control of muscle action is by the nervous system. Nerves are in touch with muscles by motor end plates which convey a stimulus to contract. They are also in touch with tendons via receptors which measure stretch and connective tissue by other receptors for pressure. These are referred to as efferent, if they are taking a message to a tissue and afferent if they are taking a message to the spinal cord and hence the brain. The brain and spinal cord is referred to as the central nervous
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This note was uploaded on 11/08/2011 for the course BIOLOGY BSC1086L taught by Professor Leostouder during the Fall '10 term at Broward College.

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Muscle mechanics - Muscle mechanics In a simple arrangement...

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