Kinesiology 4430F/G Lecture Notes - Lecture 1: Skeletal Muscle, Sarcomere, Cardiac Muscle
15 Jun 2016
School
Department
Course
Professor
Document Summary
Lecture 1 sarcomere = contractile unit of the muscle cardiac muscle, skeletal muscle, and smooth muscle: all contract to produce force, nuclei organization is different in all types, skeletal muscle is voluntary and the others are involuntary. Brief review of skeletal muscle a highly organized tissues (collection of similar cells) with a unique set of properties. What is skeletal muscle good for: thermogenesis (heat production, protein storage metabolism. 1: transform electrochemical energy mechanical energy to generate force (tension) by contraction, and ultimately to produce movement. Muscle is very adaptable in both the short term and long term you can"t grow new muscles but you can modify the speed, endurance and strength. A. contractile components: muscles shorten (contract), they do not push. Support contractile components; transmit force to tendons; resist injurious stretch by wide distribution of forces; mechanotransfucers; promote gene transcription; involved in protein metabolism. Determinants of muscle force output: structural or intrinsic, extrinsic neural control, activation history, antagonist function.
