BY 124 L Muscle Physiology Handout
What are the three basic muscle types? ️️cardiac, smooth, skeletal
skeletal muscle is usually attached to what? ️️bone
what do skeletal muscles move? ️️skeleton
the ___ nervous system controls skeletal muscles ️️somatic
are skeletal muscl...
What are the three basic muscle types? ✔️✔️cardiac, smooth, skeletal
skeletal muscle is usually attached to what? ✔️✔️bone
what do skeletal muscles move? ✔️✔️skeleton
the ___ nervous system controls skeletal muscles ✔️✔️somatic
are skeletal muscles voluntary or involuntary ✔️✔️voluntary
where do you usually find smooth muscle? ✔️✔️hollow organs and tubes-stomach, intestines,
bladder, blood vessels
smooth muscle is controlled by the _____ nervous system ✔️✔️autonomic
smooth muscle control is largely what ✔️✔️involuntary
where is cardiac muscle found? ✔️✔️heart
what two factors does it respond to? ✔️✔️ANS and hormones
skeletal muscle contains many muscle cells called ___ which are bound by what? ✔️✔️muscle fibers
connective tissue
a single muscle cell contains many ___ which extend the length of the cell ✔️✔️myofibrils
, muscle cells contract along their ___ ✔️✔️length
striations are seen in which two types of muscle ✔️✔️cardiac and skeletal
myofibrils contract ___ which in turn contract ____ ✔️✔️muscle fibers
muscles
myofibrils exhibit alternate dark and light bands alone their what?
this results in a similar banding pattern seen in the muscle cell itself ✔️✔️length
skeletal muscle is often called what ✔️✔️striated muscle
which 2 of 3 muscle are striated? ✔️✔️cardiac and skeletal
in a myofibril, the dark bands are called ✔️✔️a bands
in a myofibril the light bands are called ✔️✔️I bands
in the middle of the I bands are other bands called ✔️✔️Z lines
The A bands have light areas bisected by bands called ✔️✔️M lines
the functional unit of the myofibril is called a ✔️✔️sarcomere
a sarcomere extends from what to what ✔️✔️one z line to another
contraction of myofibrils is caused by the contraction of each ✔️✔️sarcomere
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