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anatomy448
anatomy flash cards
| Question | Answer |
|---|---|
| ability for the muscle to shorten with force | contractility |
| capacity of skeletal muscle to respond to stimuli | excitability |
| ability to be stretched | extensibility |
| ability to snap back into place after being stetched | elasticity |
| near the center of the cell | synapse |
| single motor neuron | motor unit |
| muscles regulate what ? | body temperature |
| each skeletal muscle is surrounded by connective tissue called ? | epimysium |
| what is another connective tissue surrounding the epimysium? | Fascia |
| what is numerous bundles? | muscle fasiculi |
| fascicles are surrounded by what loose connective tissue ? | perimysium |
| another name for muscles | fibers |
| each fiber is surrounded by a muscle tissue sheath called a ? | endomysium |
| a threadlike structure that extends from one fiber to another | myofibrils |
| 2 kinds of protein fibers | actin, myosin |
| thin myofilaments | actin myofiliments |
| thick myofiliments | myosin |
| highly ordered unis are ? | sarcomeres |
| what disk does the sarcomere extend from ? | z line (disk) |
| What has actin in it ? | I band |
| what has myosin in it? | A band |
| light area inside the center of a sarcomere | H zone |
| charge difference across the membrane | resting membrane potential |
| brief reversal back charge | action potential |
| nerve cells that carry on potentials | motor neurons |
| each branch connected form a | neromuscular junction (synapse) |
| enlarged nerve terminal | presynaptic terminal |
| the space in between a presynaptic terminal | synaptic cleft |
| each presynaptic terminal contains | synaptic vesicles |
| nuerotransmitter | acetylcholine |