striated muscle cell
Definition
Noun: * An elongated contractile cell in striated muscle tissue: A striated muscle cell is a specialized, thread-like cell that makes up skeletal and cardiac muscle. It is characterized by its long, cylindrical shape, multiple nuclei (in skeletal muscle), and a banded or "striated" appearance under a microscope due to the organized arrangement of its internal proteins. Its primary function is contraction, which enables movement.
Usage
The term "striated muscle cell" is a precise, scientific term used in biology, anatomy, and medicine. It refers to the fundamental structural and functional unit of muscles that appear striped.
Examples
- Under high magnification, each striated muscle cell shows distinct light and dark bands.
- The strength of a muscle contraction depends on how many striated muscle cells are activated.
- Damage to a striated muscle cell can trigger a repair process involving satellite cells.
Advanced Usage
- Histological Identification: In scientific writing, the presence and condition of striated muscle cells are key diagnostic features in tissue analysis.
- The biopsy revealed healthy, well-organized striated muscle cells.
- Distinguishing Muscle Types: The term is used to contrast with "smooth muscle cell," which lacks striations.
- Unlike the involuntary contractions of smooth muscle cells, striated muscle cells are typically under voluntary control (in skeletal muscle).
Variants and Related Words
- Muscle Fiber: This is a common synonym for "striated muscle cell," especially in the context of skeletal muscle. The terms are often used interchangeably.
- Myocyte: A general term for a muscle cell. A striated muscle cell is a type of myocyte.
- Skeletal Muscle Cell: A specific type of striated muscle cell that is attached to bones and responsible for voluntary movement.
- Cardiac Muscle Cell (Cardiomyocyte): Another specific type of striated muscle cell found only in the heart. It is striated but typically has one or two nuclei and functions involuntarily.
Synonyms
- Muscle fiber
- Myofiber (especially in skeletal muscle)
Noun
-
an elongated contractile cell in striated muscle tissue
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