In Skeletal Muscle Fibers, What Is the Source of the Calcium

question 207

Multiple Choice

In skeletal muscle fibers, what is the source of the calcium ions that are released into the sarcoplasm to bind with troponin, resulting in contraction?

• A) Extracellular fluid
• B) Sarcoplasmic reticulum
• C) Mitochondria
• D) Golgi apparatus

---

Definitions:

Regression Analysis

A statistical method used for estimating the relationships among variables.

Independent Variable

In an experiment or study, the variable that is manipulated or controlled to test its effect on the dependent variable.

Predict

To declare or indicate in advance; especially, to foretell based on observation, experience, or scientific reason.

Variable

A characteristic, number, or quantity that can be measured or quantified and can vary among individuals or over time.