If We Were Able to Artificially Alter the Membrane Permeability

question 54

Multiple Choice

If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ________.

• A) threshold is reached more quickly and heart rate would increase
• B) potassium channels compensate and no change in heart rate would occur
• C) heart rate would decrease, but blood pressure would rise due to the excess sodium present
• D) tetanic contraction would occur due to the short absolute refractory period of cardiac muscle

---

Definitions:

Unfair Advantage

Unfair advantage refers to a situation where an individual or company utilizes unethical or illegal means to gain a superior position or benefit over others.

Payment Advices

Statements or notices provided to a debtor, detailing the amounts paid and still owed by the debtor.

2005 Revisions

Amendments or updates made in 2005 to a set of statutes, regulations, or standards.

Assets and Liabilities

The components of a company's or individual's financial position, with assets representing owned resources and liabilities representing owed obligations.