A EEF EED.A.VMembrane Potential (mv)+20-2014. Define the term pacemaker potential (=drifting potential) and be able to identify itwhen given a graph of an action potential in an autorhythmic cell such as the onebelow.-40EL T-600 sec-^^0.8 sec= 800 msecTimedaRbCoDdEe AaBbCcD ABNC ADVEEmphasisHeading 1INormal1.6 sec-1600 msec

Answered: A EEF EE D.A. V Membrane Potential (mv)…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Related questions

Question

A EEF EE
D.A.
V
Membrane Potential (mv)
+20
-20
14. Define the term pacemaker potential (=drifting potential) and be able to identify it
when given a graph of an action potential in an autorhythmic cell such as the one
below.
-40
EL T
-60
0 sec
-
^^
0.8 sec
= 800 msec
Time
daRbCoDdEe AaBbCcD ABNC ADVE
Emphasis
Heading 1
I
Normal
1.6 sec
-1600 msec

Expert Solution

Step 1

Introduction:

As the sinoatrial node is responsible for initiating the heartbeat, it is referred to as the heart's pacemaker. It is the primary nodal site for the firing of a heartbeat. The specialized cells in the Sinoatrial node and their membrane potential perform this firing mechanism. Changes in the pacemaker potential of the SA node cause the heartbeat to become cyclic rather than having a protracted refractory period in neurons.