NATS 1610 Lecture Notes - Lecture 9: Myosin Head, Skeletal Muscle, Myosin
27 Feb 2017
School
Department
Course
Professor
Document Summary
3 types of muscle tissue: skeletal (voluntary, smooth (involuntary, cardiac (involuntary) Muscle fibres: have dark and light bands, the dark bands are called a bands, and are myosin, which are thick laments, the light bands are called i bands, and are actin, which are thin laments. A sarcomere is the distance form one z band to the next z band: a sarcomere is the smallest unit of muscle that contracts. What makes the a band a thick lament, is that it is an area where both actin and myosin over lap. The thin lament is called that because it is an area with no myosin, so it only has actin. The h zone is a zone with only myosin lament, and it is in the middle of a sarcomere. A muscle bre is the name of a skeletal muscle cell myo laments are the thick and thin actin myosin laments.
