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Muscles intro

Approximately how many muscles are in the body? 650.
What is the normal % of muscle in body mass? 35%.
What are the 3 types of muscle? Skeletal- voluntary and striated. Visceral- involuntary and smooth. Cardiac- involuntary and striated.
What is the function of deep fascia? Divides the limbs into compartments. Compartments contain groups of muscles that share a function.
Within a functional group... ...the prime mover is the main participant in a movement. ...other muscles in the group are synergists. ...the group of muscles that oppose the movement are the antagonists.
How are muscle fibres arranged? In bundles or fasciculi.
What are muscles associated with? Extensive connective tissue coverings that support nerves and capillaries.
What is the function of the endomysium? It separates the muscle fibres.
What is the function of the perimysium? It lies between fasciculi.
What is the epimysium? A dense sheath on the surface of the muscle fibre.
How do myocytes form? Myosatellite cells give rise to myoblasts, which mature into myocytes.
What is the function of myostatin? It inhibits the process of differentiation in skeletal muscles.
How does muscle interact with the nervous system? Muscle consists of cells that when stimulated by nerves, contract causing tension that brings about movement at synovial joints.
Define the periosteum? A layer of dense connective tissue that covers the surface of a bone except at the articular surfaces.
What is the structure of the periosteum? The outer layer is extremely dense and contains a large number of blood vessels. The inner layer is more cellular in appearance and contains osteoblasts and fewer blood vessels.
What is the main function of the periosteum? Provides attachment for muscles, tendons and ligaments.
What is the function of a tendon? To attach muscle to bone.
Created by: robertspedding