BPK 142 Lecture Notes - Lecture 4: Google Images, Myocyte, Titin

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 142
• Professor: Mike Walsh

Document Summary

Cardiac like smooth muscle is under involuntary control. Ex) bicep curls (bicep is the prime mover; antagonist is the tricep; shoulder is the stabilizer) Origins are always superior for running up the body, insertions are inferior. For running across the body superior are medial and inferior are lateral. If we didn"t have connective tissue we would be blobs. The tendon has to be very strong (slide 14) All pictures on the final anatomy exam come from google images or class pictures. Muscle fiber is the same as a muscle fibre. The titin joins the myosin to the z line. From z line to z line there is the sarcomere. Actin has black dots=>this is where the myosin binds(20) Myofibril is surrounded by blue stuff called the sr. The calcium contraction in the sr can be 10000 times greater than outside the sr. Atp is the energy used to fuel this contraction.