Maintaining a certain calcium concentration is important for the proper functioning of which cells? check all that apply. skin cells nerve cells blood cells liver cells muscle cells

look at the added image, it is muscle and nerve

Explanation:

Maintaining a certain calcium concentration is important for the proper functioning of nerve cells and muscle cells.

In neurons, it is imperative to maintain a certain level of calcium ions (Ca2+) because these ions act as second (intracellular) messengers. A resting (non-signaling) neuron has an intracellular Ca2+ concentration of 50 to 100 nanomoles (nM).In neurons, the influx of Ca2+ ions through voltage-dependent membrane channels is involved in different processes such as neuronal growth, development, regulation of neuronal excitability, etc.Intracellular Ca(2+) ion concentration also has a fundamental role in muscle contraction.In muscle cells, Ca2+ ions are stored within the sarcoplasmic reticulum, which is s a membrane-bound structure similar to the smooth endoplasmic reticulum.During muscle contraction, Ca2+ ions bind to troponin C, thereby leading to a conformational change in tropomyosin, which is a fundamental contractile protein in muscle cells.

In conclusion, calcium concentration is fundamental for the proper functioning of both nerve cells and muscle cells.

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