Respuesta :

Answer:

The slow arrival of contraction or the slow onset of contraction.

Explanation:

The T tubules function in the transformation of the action potential from the sarcolemma to the sarcopasm reticulum.

In the skeletal muscles, it is located at the junction of the A and I bands but in the cardiac muscles, it is located only at the z discs thus giving rise to to T tubules.

The cardiac muscles also do not possess as much calcium as the skeletal muscles thus, its calcium ion must come from outside producing the slow arrival of contraction or the slow onset of contraction.

luisvaschetto

The cardiac tissue has fewer T tubules and stores less calcium than skeletal muscle, thereby the onset for muscle contraction is SLOWER in the heart than in skeletal muscle.

  • The sarcolemma is the plasma (excitable) membrane of muscle cells, which are surrounded by endomysial connective tissue.

  • The T-tubules are invaginations of the sarcolemma that enter into the muscle cell in order to form interconnected networks.

  • These tubules (T tubules) store intracellular calcium ions under the supervision of membrane depolarization through a voltage sensor channel (i.e., DHPR).

In conclusion, the cardiac tissue has fewer T tubules and stores less calcium than skeletal muscle, thereby the onset for muscle contraction is SLOWER in the heart than in skeletal muscle.

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https://brainly.com/question/6763078

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