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sergey [27]
3 years ago
11

Anong, who is breast-feeding her infant daughter, had measles as a child. her daughter will be protected from the disease becaus

e of the _____ in anong's breast milk.
Biology
1 answer:
xxMikexx [17]3 years ago
4 0
Because of the antibodies produced by the mother, inherent immunity..
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What structure of the sarcomere shortens during muscle contraction?
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The Z lines and H- zone shortens during the muscle contraction.

Explanation:

Sarcomere is the area between the two Z lines. The Z- lines are present in the centre of I - band and H - zone is present in the A - band. The actin filaments which are thin filaments present in I- band and contracts, slide over the myosin filament during contraction.

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After the muscle contraction, the A- band and the H- zone comes to their original shape. In other words, the sarcomere shortens and comes back during muscle contraction, and relaxation.

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