Musculoskeletal System
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function of the musculoskeletal system
made up of skeleton and skeletal muscle - support, protection and movement
connective tissue
bone ligaments cartilage
bone
tissue is hard an dense (mostly non living) bone cells within a matrix of minerals (mainly calcium and phosphorus) and collagen fibres canals inside bone contain blood vessels and nerves
ligaments
tough, elastic connective tissues that hols bones together at the joints mostly made up of long fibres of collagen
cartilage
dense connective tissue found in the ear, nose, esophagus, disks between vertebrae and joints special cells in a matrix of collagen fibres provides strong, flexible, low-friction support
what is a matrix?
interweaved
what is a skeletal muscle?
voluntary muscles connected to bones via TENDON
what is smooth muscle?
involuntary example esophagus
how do muscles interact?
muscles act in antagonistic pairs when one muscle contracts, another must relax