Kinesiology 2230A/B Lecture Notes - Lecture 3: Troponin, Endoplasmic Reticulum, Hydrolysis

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2230A/B
• Professor: Glen Belfry

Document Summary

The higher the injury on the spinal cord the greater the limit of function when damaged. Coccyx: a little bit of dysfunction in leg but it is minimal. On both sides of a t-tubule are dilated end sacs of the sarcoplasmic reticulum called the terminal cisternae. A t-tubule, together with its two terminal cisternae, is called a muscle triad. Terminal cisternae: collection of ca+ on either side of t-tubule. Movement of actin and myosin to shorten a muscle. Pull from both directions origin and insertion: occurs after ap has reached muscle and ca+ has been released, h zone: distance between the actin on either side of the sarcomere. Shortening distance b/w actin (myosin doesn"t move) When muscle is fully contracted there is an overlap in actin i. e. acting are moving towards each other. I band: the ends of the myosin (from one z line to the other) Gets smaller, pulling adjacent sarcomeres together o: a band: myosin length.