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nmdcat.online July 28, 2026

The functional relationship between the shape of a muscle cell and its tissue type is evident when observing spindle-shaped cells. This specific morphology allows the cells to:

A. Form long, linear cables for pulling bones
B. Branch and form a three-dimensional pumping network
C. Form tightly packed sheets that wrap around hollow tubes
✓
D. Store massive amounts of calcium centrally

📝 Explanation

Spindle-shaped cells (tapered at both ends) are characteristic of smooth muscle. This shape allows them to pack tightly together into continuous sheets (often in circular and longitudinal layers) that form the walls of hollow organs, facilitating functions like peristalsis and regulating vessel diameter.

📖 Additional Information

  • Form long, linear cables for pulling bones
  • Branch and form a three-dimensional pumping network
  • Form tightly packed sheets that wrap around hollow tubes
  • Store massive amounts of calcium centrally

Spindle-shaped cells (tapered at both ends) are characteristic of smooth muscle. This shape allows them to pack tightly together into continuous sheets (often in circular and longitudinal layers) that form the walls of hollow organs, facilitating functions like peristalsis and regulating vessel diameter.

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