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Chapter 6
Muscular System
| Question | Answer |
|---|---|
| are responsible for all types of body movement | Muscular System |
| Prefix myo refers to? | muscle |
| Prefix mys refer to? | muscle |
| Prefix sacro refer to? | flesh |
| most abundant by tendons to bones | Skeletal Muscle |
| have visible banding | Striated |
| subject to conscious control | Voluntary |
| around single muscle fiber and it is located around single cell or each muscle fiber | Endomysium |
| around a fascicle of fibers | Perimysium |
| covers the entire skeletal muscle | Epimysium |
| on the outside of the epimysium | Fascia |
| cord-like structure | Tendons |
| sheet like structure | Aponeuroses |
| it has no striations, spindle-shaped cells and single nucleus | Smooth muscles |
| no conscious control | involuntary |
| they always at work and never gets tired | smooth muscles |
| has striations, joined to another muscle cell at an intercalated disc | Cardiac Muscle |
| specialized plasma membrane | Sarcolemma |
| specialized smooth endoplasmic reticulum | Sarcoplasmic reticulum |
| ribbon like structures, bundles of myofilaments | Myofibril |
| Light band | I band |
| Dark band | A band |
| Contains tiny proteins rods, they are found in the center of the H zone | M line |
| is to hold the adjacent of thick filaments | H zone |
| contractile unit of muscle fiber and they are aligned end to end along with the length of the myofibril | Sarcomere |
| composed of the protein myosin | Thick filaments |
| generation of power for muscle contraction | ATPase enzymes |
| composed of the protein actin | Thin filaments |
| have head (extension or bridges) | Myosin filaments |
| for storage of calcium | Sarcoplasmic reticulum |
| ability to receive and respond to a stimulus | Irritability |
| ability to shorten when an adequate is received | Contractility |
| the ability of the muscles to be stretched | Extensibility |
| to recoil and resume their resting length after being stretch | Elasticity |
| it is a part of a nerve cell that make synaptic connections with another nerve cell or with an effector cell | Axon terminals |
| association site of nerve and muscle | Neuromuscular junctions |
| gap between nerve and muscle | Synaptic cleft |
| chemical released by nerve upon arrival of nerve impulse | Neurotransmitter |