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13 Cards in this Set
- Front
- Back
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What is the function of the muscular system? |
The maintenance of posture, providing force to produce movement and for helping in important bodily such as blood circulation, breathing and digestion |
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Muscles are either _______ or _________ |
1. Voluntary - conscious control, are attached to bones 2. Involuntary - have little or no conscious control |
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Muscle fibres are arranged in ________. Each muscle fibre is made up out of many _________. |
1. fascicles 2. myofibrils |
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The plasma membrane in a muscle cell is called a ________ and a cytoplasm is called the _______
a) Sarcoplasm b) Sarcolemma c) Striation |
1. sarcolemma 2. sarcoplasm |
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What is the name of the connective tissue covering the skeletal muscle? a) Endomysium b) Perimysium c) Epimysium |
c) |
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Explain the Sliding Filament Theory |
Involves the myofilaments sliding across each other which causes each sarcomere to shorten in length, thereby causing the muscle to shorten. |
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What is the function of the sarcomeres? |
A contractile unit in a muscle fiber that is composed of myofilimanets |
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What does the sarcoplasm (gel like substance inside the sarcolemma) contain? |
Mitochondria, myoglobin, fat, glycogen, creatine phosphate, adenosine triphosphate, enzymes and myofilaments |
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each fascicle is surrounded by a layer of connective tissue called the ___________ |
Perimysium |
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Muscle cells are ________ |
1. Multi-nucleated |
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Each fascicle is surrounded by a layer of connective tissue called the ________ |
Perimysium |
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A discrete bundle of muscle fibres is called a __________. |
Fascicle |
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Inside a fascicle, it contains many ________ |
Muscle Fibres |
