A Reduction in Extracellular Ca²⁺ Levels Would Lead to

question 65

Multiple Choice

A reduction in extracellular Ca²⁺ levels would lead to

• A) increased force of cardiac muscle contraction due to increased interactions between actin and myosin.
• B) decreased force of cardiac muscle contraction due to a lack of release of Ca²⁺ from the sarcoplasmic reticulum.
• C) heart block due to depolarization of the sarcolemma.
• D) heart block due to hyperpolarization of the sarcolemma.

---

Definitions:

Problem Experienced

A situation or occurrence where difficulty or distress is encountered.

Written Assessment

A form of evaluation that involves responses or answers being provided in written form to measure understanding, skills, or competencies.

Randomized Clinical Trial

A scientific study in which participants are randomly assigned to one of the treatment or control groups to assess the efficacy of a medical intervention.

Before-after Study

A study design in which the same group of subjects is measured before and after a specific intervention or event, to assess its effects.