BIOM20002 Lecture Notes - Lecture 15: Avulsion Fracture, Motor Unit, Joint Capsule

• School: University of Melbourne
• Department: Biomedicine
• Course: BIOM20002
• Professor: All

Document Summary

Involuntary control has its own pacemakers: heart/blood vessels visceral, short fibres meet up at intercalated disc, rhythmic contraction, no capacity to juvenate. Smooth: spindle-shaped, no striation, has its own nucleus, capacity to juvenate and regrow. Endomysium goes around the muscle cell and helps hold fibres together for the tiniest muscle cells (myofibrils made up of sacromeres); the fibres you see when pulled apart. Perimysium the middle layer; encircles muscle fascicles. Epimysium wrappings around the whole entire muscle. Aponeurosis: a broad, flat sheet of connective tissue linking a muscle belly to the site of attachment. It enables force to be spread over a greater area and may enclose other muscles to increase their efficiency of contraction. Raphe: a line of fibrous tissue where one muscle joins another; often located in the midline of the body, provides a relatively strong connection using little space and minimal tissues raphe.