A Physiologist Is Trying to Study the Cardiac Action Potential

question 316

Multiple Choice

A physiologist is trying to study the cardiac action potential. He takes the reading from 4 different points within normal cardiac tissue. The results, expressed in terms of speed of conduction (meters per second) , are as follows:Point 1 - 0.05 m/sec Point 2 - 0.3 m/sec
Point 3 - 1.1 m/sec
Point 4 - 2.2 m/secFrom the following list of locations, which most likely corresponds to the order of points 1-2-3-4 (AV = atrioventricular) ?

• A)Atrial muscle, ventricular muscle, Purkinje system, AV node
• B)AV node, Purkinje system, ventricular muscle, atrial muscle
• C)AV node, ventricular muscle, atrial muscle, Purkinje system
• D)Purkinje system, AV node, ventricular muscle, atrial muscle
• E)Ventricular muscle, AV node, Purkinje system, atrial muscle

---

Definitions:

Codec

A device or software that encodes or decodes digital data streams or signals, typically used for compressing and decompressing audio or video.

Digital Media

Content or information shared and consumed through digital devices, encompassing video, audio, and web content.

Trim Video

The process of editing a video by cutting out unwanted parts from the beginning, middle, or end to adjust its length or focus.

Start and End Time

Specific points in time marking the beginning and completion of an event or activity.