if the overall electrical activity vector of the heart points superiorly for a short time, how will this look on an ECG recording?
Added by William V.
Step 1
The electrical activity vector of the heart represents the direction of the electrical impulse as it spreads through the heart, causing depolarization. This vector can change direction depending on which part of the heart is being activated. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 73 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Adi S.
When wave of depolarization travels toward a lead, how is this represented on an ECG tracing? When wave of repolarization travels toward a lead, how is this represented on an ECG tracing? Negative deflection (downward) No change (horizontal) Positive deflection (upward) Negative (downward) No change (horizontal) Positive (upward) If the overall electrical activity vector of the heart points superiorly (upward, toward the head) for a short time, how will this look on an ECG recording? It depends on which "lead" records the electrical activity. The "upward" vector means the ECG recording will have a downward deflection. The "upward" vector means the ECG recording will have an upward deflection.
Shaiju T.
Standard electrocardiography measures time-dependent potential differences between multiple points on the body, giving cardiologists multiple perspectives on the heart's electrical activity. In contrast, Fig. 22.26 is a "snapshot" showing a more detailed picture at an instant of time. The lines are equipotentials on the surface of a human torso, associated with the heart's electrical activity. Relative to the line marked $V=0,$ the potential is negative to the upper left (black) and positive to the lower right (color). The electric field in the vicinity of the heart points approximately a. from upper left to lower right. b. from lower left to upper right. c. from upper right to lower left. d. from lower right to upper left.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD