If the Pacemaker Cells in the SA Node Become More

question 128

Multiple Choice

If the pacemaker cells in the SA node become more permeable to potassium ions, the

• A) heart rate will increase.
• B) heart rate will decrease.
• C) membrane will depolarize.
• D) membrane will hyperpolarize.
• E) both heart rate will decrease and membrane will hyperpolarize.

---

Definitions:

Objectively

In a manner that is not influenced by personal feelings or opinions, based on facts.

Signaling Theory

A theory that explains how individuals or businesses convey information about themselves to differentiate from others, particularly in contexts of asymmetrical information.

Education

The process of facilitating learning, or the acquisition of knowledge, skills, values, beliefs, and habits through various means such as teaching, training, storytelling, and discussion.

Productivity

The efficiency with which inputs, such as labor and capital, are converted into outputs, or goods and services.