Examlex
The skin is part of which system?
A Band
The dark area in the sarcomere of a muscle fiber, consisting of thick myosin filaments alongside partially overlapping thin actin filaments.
Myofibril
A basic rod-like unit of a muscle cell, which is essential in the process of muscle contraction and made up of sarcomeres.
Sarcoplasmic Reticulum
A network of membrane-enclosed tubules in muscle cells, involved in the regulation of calcium ions and muscle contraction.
Calcium
A chemical element vital for bone health, muscle function, and nerve signaling in the human body.
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