week 5: sarcomere
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Last updated 4:44 PM on 11/15/25
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10 Terms
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sarcomere
smallest unit of muscle contraction
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thin myo
anchored on one end to a Z-disk
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thick myo
anchord to Z-disk via titin and M line
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A-band
dark band, equal to length of thick myo
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H-zone
lighter band at center of A-band
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I-band
light band between adjacent A bands → actin, titin, Z-disk
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Z-disks
connection points between adjacent sarcomere
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M-line
supporting proteins holding thick myo together
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T-tubules
encircle myo at junctions of A and I bands
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number of actin myo to myosin myo
2:1 ratio
Note 
Flashcards (21)