KIN 3306 Lecture Notes - Lecture 8: Stress (Mechanics), Circulatory System, Heart Failure
22 Apr 2018
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Class notes: muscle contraction: muscle actively contracting/works, active tension = contraction, stretching is passive stretching. Isometeric action occurs when a muscle exerts force but does not shorten . ex . extend hand straight out: concentric occurs when a muscle contracts and shortens. Flex arm in ward: eccentric action: occurs when a muscle is active and force is produced, but. Arm straight out but push hand backwards. the muscle lengthens. Skeletal muscle: normally muscle connects to bone of body, this is very different than cardiac muscle. Human body has more than 600 skeletal muscle =equal 40 %to 50% total body weight. (40%-45% skeletal muscle biggest organ in body) 3 functions of skeletal muscle: force generation for locomotion &breathing, force generation for postural support, heat production during cold stress. Tendon: tough connective tissue that attach skeletal muscle to bone. Origin-end of muscle attach your bone that does not move. Edv-endodiastyloic volume volume of your heart in the end of stolyic.
