When a Person Dies, Muscles Become Rigid and Fixed in Position

question 14

Multiple Choice

When a person dies, muscles become rigid and fixed in position. This is a condition known as rigor mortis. Why does rigor mortis occur?

• A) ATP is not available to release myosin heads from actin filaments.
• B) Muscle fibers break down quickly in the absence of oxygen.
• C) ATP is not available to cause sarcomeres to shorten.
• D) The human skeletal system locks together after death.

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Definitions:

Sales Units

The total number of units of a product sold during a specific period.

Break-Even Point

The production level or sales volume at which total revenues equal total costs, resulting in neither profit nor loss.

Margin of Safety

The difference between actual sales and the break-even point, indicating the level of risk in not covering fixed costs.

Composite Units

A measure used in costing to represent a bundle or mix of goods or services treated as a single unit.