KINE 1020 Lecture Notes - Lecture 3: Muscle Contraction, Troponin, Myocyte

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 1020
• Professor: Amanda Glasbeek

Document Summary

You feel tried after a workout because glucose levels drop do the amount of contractions. Brain does not have glucose required to produce action potentials. H zone is where there no myosin only actin. Lightest shade is where there is no myosin a is where myosin overlap. When you stretched a fibre out you have minimum. During shortening contraction a band stays the same. Memorize zones how does myosin and actin react. When produce force when muscle in demand the muscles will lengthen. Essentric contracts while going down stairs quad are contracting to slow you down but it is lengthening. Go through slide at home zone and shortening and lengthening muscles. Myosin: headband tail region s contains binding sites for actin and atp. When ca binds troponin it"s a positive charge and troponin changes shape. Charge interactive twists the troponin and it causes calcium release. A lot of contractions is natural eagerly from ions.