Made up of cells known as osteocytes. Produce organic and non-organic components of bone. Calcium and magnesium phosphate are needed for strength. Collagen provides flexibility.
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What are the 3 types of muscle?
Smooth muscle which is involuntary, cardiac muscle and striated muscle which is voluntary.
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What filaments do all muscles contain?
The proteins actin and myosin.
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Describe smooth muscle
It is innervated by the autonomic nervous system. Contraction is slow but cells tire slowly too. Cells are long and thin. Triggered to contract by hormones (oxytocin). Appear as cylinders next to each other.
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Describe cardiac muscle
Striated.Forms heart muscle.Some=myogenic.Controlled by autonomic NS.Cells joined by intercalated discs (cell membranes).Contains gap junctions=allow rapid diffusion/passing action potentials.Contraction/relaxation powerful+continuous, no fatigue.
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Describe striated muscle
Involvement in movement of limbs. Strips caused by arrangement of protein fibres in cells. Multinucleate. Contract quickly and powerfully. Tires quickly.
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Other cards in this set
Card 2
Front
What are the 3 types of muscle?
Back
Smooth muscle which is involuntary, cardiac muscle and striated muscle which is voluntary.
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