« previous next »

Author Question: The QRS complex represents which of the following? a. Atrial depolariza-tion c. Ventricular ... (Read 11 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?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Relative Ventricular Size in Chronic Schizophrenics and Controls Relative Ventricular Size in Chronic Schizophrenics and Controls
Structure of the cytochrome b6f complex Structure of the cytochrome b6f complex
How to determine if a table of values represents a linear or quadratic relationship How to determine if a table of values represents a linear or quadratic relationship
Structural model of the Cro dimer–operator complex Structural model of the Cro dimer–operator complex
Biological Diversity: Complex patterns of diversity Biological Diversity: Complex patterns of diversity
Ethanol has the molecular formula C2H6O. Which ball and stick model shown above represents ... Ethanol has the molecular formula C2H6O. Which ball and stick model shown above represents ...
Video: Mendel's pea plant, Pisum sativum experimental

For a complete list of videos, visit our video library