Jillian Jackson Word Scramble
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Question | Answer |
Muscle cells | Muscle Fibers |
The ability of skeletal muscle to shorten with force | Contractility |
The capacity of skeletal muscle to respond to a stimulus | Excitability |
The ability to be stretched | Extensibility |
Recoil to their original resting length after they have been stretched | Elasticity |
Each skeletal muscle is surrounded by a connective tissue sheath | Epimysium |
Another connective tissue located outside the epimysium. (surrounds and seperates muscles.) | Fascia |
A muscle is composed of numerous visible bundles | Muscle fasciculi |
Fasciculi is surrounded by loose connective tissue | Perimysium |
The fasciculi is composed of single muscle fibers | Fibers |
Each fiber is surrounded by a connective tissue sheath | Endomysium |
Myofibrils consist of 2 major types of protien fibers | Actin myofilaments and myosin myofilaments |
Thin myofilaments | Actin |
Thick myofilaments | Myosin |
Actin and myosin filaments form highly ordered units | Sarcomeres |
Basic structural and functional unity of the muscle | Sarcomere |
Four Major Functional Characteristics | Contractility, excitability, extensibility, elasticity. |
Each sarcomere extends from one Z line to | Another Z line |
Each Z line is an attachment site for | Actin |
Each side of the Z line is a light area called _______, it consists of actin | I band |
In the center of each sarcomere is another light area called the ___________, which consists of myosin | H zone |
The myosin myofilaments are anchored in the center of the sarcomere at a dark staining band called the __________. | M line |
The change difference across the membrane. | Resting membrane potential |
The brief reversal of the charge. | Actin potential |
Nerve cells that carry actin potentials to skeletal muscle fibers | Motor neurons |
Each branch that connects to the muscle forms a ________________, or __________ near the center of the cell | Neuromuscular junction; synapse |
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