If the Pacemaker Cells in the SA Node Become More

question 173

Multiple Choice

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

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

---

Definitions:

Aggression

Behaviors or attitudes that are forceful, hostile, or attacking, often indicating readiness to confront or engage.

Depression

A mental health disorder characterized by persistently depressed mood or loss of interest in activities, causing significant impairment in daily life.

Medical Asepsis

A set of infection-control practices used to reduce the risk of transmitting pathogens and achieve a clean environment.

Handwashing

The act of cleaning hands with soap and water or hand sanitizer to remove germs and prevent the spread of infections.