front 1 during a contraction, muscles are first.... | back 1 excitable |
front 2 what are skeletal muscle groups that work together to create the same movement called? | back 2 synergistic muscles |
front 3 stimulation of acetylcholine release cause skeletal muscles to become? | back 3 to generate an electric impulse |
front 4 In order for a muscle contraction to occur, cross bridges must form between... | back 4 thin and thick filaments |
front 5 For a skeletal muscle to contract, what must occur? | back 5 it must be activated by a nerve and have the presence of calcium |
front 6 when an electrical impulse traveling along a motor neuron arrives at a neuromuscular junction what happens? | back 6 acetycholine is released from the nerve terminal |
front 7 the primary energy source used by muscle cells to generate ATP is? | back 7 glucose |
front 8 isotonic muscle contractions occur when? | back 8 a muscle shortens while maintaining a constant force. |
front 9 During a marathon, runners will use of ATP and glucose early in the race. which energy source is generally used next for producing ATP? | back 9 stored glycogen |
front 10 At the end of the contractile period, energy from the breakdown of ATP is used to? | back 10 transport calcium back into the sarcoplasmic reticulium so the relaxation can occur. |
front 11 T, or transverse, tubes in skeletal muscle function to... | back 11 to store ionic calcium |
front 12 what is a characteristic of an isotonic muscle contraction but not an isometric muscle contraction. | back 12 isometric do not cause muscle movement. isotonic does |
front 13 give me examples of isotonic contractions | back 13 lifting light or heavy objects |
front 14 after intense exercise, your body attempts to overcome oxygen debt by what? | back 14 your body takes in excess oxygen. |
front 15 after electrical stimulation of a muscle cell, calcium functions to... | back 15 diffuses into the cell cytoplasm and then comes in contact with the myofibrils where it sets in motion a chain of events that leads to contraction. |
front 16 a myogram is a recording of what? | back 16 of muscle activity |
front 17 which muscles would one expect to find motor units made up of only a few muscle cells? | back 17 where fine control is essential. |
front 18 fast twitch fibers tend to rely on what for quick bursts of energy? | back 18 creatine phosphate and anaerobic metabalism |
front 19 what increases in the body as a result of aerobic training? | back 19 lactid acid |
front 20 what are the differences between smooth and cardiac muscle? | back 20 the cardiac muscles surround the heart. smooth muscle covers other areas like ducts, tubes and cavities of your digestive, urinary, respiratory and genital systems. Smooth muscle is also found in the skin and eyeball. |
front 21 during aerobic exercise the target heart rate should be maintained for at least how many minutes in order to train the body? | back 21 20 minutes |
front 22 what are the differences between all three muscle types? | back 22 cardiac has striated appearance smooth muscle has no striations cardiac and smooth muscles are involuntary and are able to contract on their own. |
front 23 muscle soreness that occurs after jogging down a hill results from what? | back 23 release of lactic acid. |
front 24 intercalated discs contain what? | back 24 Intercellular junctions |
front 25 what do anabolic steroids do to your body? | back 25 to increase muscle mass, and muscle strength, it can cause a lot of negative things to happen as well. it increases your risk of heart attack or stroke. and severe liver disease. |