« previous next »

Author Question: The QRS complex represents which of the following? a. Atrial depolariza-tion c. Ventricular ... (Read 37 times)

@Brianna17

  • Hero Member
  • *****
  • Posts: 550
on: Jul 16, 2018
The QRS complex represents which of the following?
 
  a. Atrial depolariza-tion c. Ventricular repolar-ization
  b. Ventricular depo-larization d. Threshold potential

Question 2

On an electrocardiogram, the time between atrial and ventricular contraction is known as the:
 
  a. PR segment c. QRS interval
  b. ST segment d. QT interval


TheNamesImani

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
Ventricular depolarization is represented on the electrocardiogram as the QRS complex. The P wave represents atrial depolarization. The T wave represents ventricular repolarization. Threshold potential is the critical level of electrical excitation reached by any cell, causing an action poten-tial to occur.

Answer to Question 2

ANS: A
The PR segment represents the time delay that occurs within the atrioventricular node and therefore represents the time between atrial and ventricular contractions. The ST segment occurs during ventricular depolarization, the QRS interval represents ventricular polarization, and the QT interval represents the time required for ventricular depolarization and repolarization to oc-cur.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Ventricular asystole. Ventricular asystole.
Structure of the g complex bound to DNA Structure of the g complex bound to DNA
Plan of Complex of the Temple of Aphaia, Aegina Plan of Complex of the Temple of Aphaia, Aegina
The path of the conveyor is complex and affected by deep ocean topography The path of the conveyor is complex and affected by deep ocean topography
Atrial fibrillation Atrial fibrillation
Cross-regulatory interactions between bithorax complex genes Cross-regulatory interactions between bithorax complex genes
Video: Stretch reflex & Tendon reflex

For a complete list of videos, visit our video library