HSCI 100 Lecture Notes - Lecture 1: Troponin, Acetylcholinesterase, Signal Transduction

• School: Simon Fraser University
• Department: Health Sciences
• Course: HSCI 100
• Professor: Nienke Van Houten

Document Summary

Involved with movement that allows us to respond to stimuli, digestion, return of blood to the heart and moving air in and out of lungs. Keeps us upright and protect body parts. Bones store and release calcium needed for muscle contraction, blood clotting, and nerve impulse conduction. Cardiac (involuntary); heart: has opening for ions to pass through. Attachments: tendons connective tissue that connects muscle to bone, origin: stationary bone o. Action: antagonist: muscle work in opposite pairs o. Synergistic: works in groups for a common action. Only force muscles exert is by pulling (contracting) Muscle fibres are arranged in bundles; fascicles. Myofibrils are a bundle of myoflaments that rub the length of a fiver. My filaments are 2 main proteins (actin and myosin) that are arranged in repeating units. Sacromeres are the repeating units of actin and my opinion found along a myofibril. Mature muscles have satellite cells serve as stem cells for this tissue.