Which of the Following Relationships Is a Statement About the Frank-Starling

question 5

Multiple Choice

Which of the following relationships is a statement about the Frank-Starling law of the heart?

• A) Increased diastolic stretching of myocardial fibers produces increased stroke volume.
• B) Sympathetic activation leads to increased myocardial contractility and heart rate.
• C) An increase in heart chamber diameter increases myocardial wall tension.
• D) An increase in coronary artery diameter results in less rapid coronary blood flow.

---

Definitions:

Cell-mediated Immunity

An immune response that does not involve antibodies but instead involves the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.

Intracellular Bacteria

Bacteria that live within the cells of a host organism, often causing disease.

Extracellular Antigens

Foreign substances outside cells that trigger an immune response.

B Cells

A type of white blood cell that plays a key role in the immune response by producing antibodies against antigens.