Cardiac muscle has what identifying characteristic? Striations Intercalated discs Multi-nucleated cells The colour A single nucleus per cell
Question
Cardiac muscle has what identifying characteristic?
- Striations
- Intercalated discs
- Multi-nucleated cells
- The colour
- A single nucleus per cell
Solution
Cardiac muscle, also known as myocardium, has several identifying characteristics:
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Striations: Like skeletal muscle, cardiac muscle is striated. This is due to the arrangement of the contractile proteins actin and myosin within the muscle cells.
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Intercalated discs: These are unique to cardiac muscle. They are specialized structures that allow for the rapid spread of electrical signals between cells, enabling the heart to contract as a unit.
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Single nucleus per cell: Unlike skeletal muscle, which is multi-nucleated, cardiac muscle cells typically have a single nucleus.
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The color of cardiac muscle is typically described as being a dark red color. This is due to the high levels of myoglobin, a protein that binds oxygen, in the cells.
So, the identifying characteristics of cardiac muscle are striations, intercalated discs, a single nucleus per cell, and its color.
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Fill in the Blank QuestionFill in the blank question.Branching cells that are uninucleate and striated are typical of muscle fibers.
Muscle tissue that consists of cells that are striated, branched, and joined by intercalated discs is called muscle tissue.
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