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Unformatted text preview: o Pivot joint • Muscles: o Strated (voluntary)-can move intentionally o Smoothe (involuntary) around small intestine o Heart (cardiac) never stops working • Muscles often come in pairs • Biceps and triceps are antagonistic (bicelps contract, trisepts relax, and vice versa) • A muscle cell is a muscle fiber-made up of bundles of fiber inside one muscle are myofibles • Contains several nuclei • Muscles require a lot of ATP (loaded with mitochondria) • Powering element: ATP is used for contraction o Use ATP to attach myosin to actin and move relative to actin • Triggering o Nerve signals gives rise to more calcium in cytoplasm-calcium binds to actin...
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This note was uploaded on 12/21/2011 for the course BIO 202 taught by Professor Brooks during the Fall '11 term at UCSB.
- Fall '11