Which Is Correct About the Contraction Sequence of the Heart

question 111

Multiple Choice

Which is correct about the contraction sequence of the heart?

• A)The contraction and relaxation of all four chambers happen at the same time.
• B)The right atrium and ventricle contract at the same time,and as they are relaxing,the left atrium and left ventricle begin to contract.
• C)Contraction begins in the order: right atrium,then right ventricle,then left atrium,then left ventricle.
• D)The two atria contract at the same time,and as they are relaxing,the two ventricles contract together.
• E)The atria and ventricles begin their contractions at the exact same time,but the atrial contraction only lasts half as long as the ventricle contraction.

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Definitions:

Setup Cost

The expenses incurred to prepare equipment or processes for manufacturing an order, including cleaning and tooling costs.

Carrying Cost

The total cost of holding inventory, including storage, insurance, depreciation, and opportunity costs, synonymous with holding costs but with a rephrased definition for clarification.

Safety Stock

Inventory kept on hand to protect against stockouts caused by fluctuations in demand or supply chain disruptions.

Lead Time

Lead time is the amount of time that elapses from the start of a process until its completion, important in manufacturing and supply chain management.