This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A patient's ECG was abnormal and the physician determined that a pacemaker was necessary. Which of ... (Read 49 times)

Yolanda

  • Hero Member
  • *****
  • Posts: 757
on: Aug 20, 2018
A patient's ECG was abnormal and the physician determined that a pacemaker was necessary. Which of the following best describes the normal electrical functioning of the heart?
 a. Electrical activity is initiated by the SA node and depolarization is carried from the ventricle by the AV node.
  b. Electrical activity is initiated by the AV node and depolarization is carried from the atria by the SA node.
  c. As the resting membrane potential decreases the SA node will reach its depolarization threshold.
  d. As the resting membrane potential increases the AV node will reach its depolarization threshold.

Question 2

Relaxation of the ventricle as it fills with blood is referred to as
 a. diastole.
  b. systole.
  c. tachycardia.
  d. arrhythmia.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ashley I

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Aug 20, 2018
Answer to Question 1

c

Answer to Question 2

a


Yolanda

  • Member
  • Posts: 757
Reply 2 on: Aug 20, 2018
Great answer, keep it coming :)

diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Effects of nursing rounds on patient safety Effects of nursing rounds on patient safety
Caring for a patient on isolation precautions Caring for a patient on isolation precautions
Foley catheter with balloon in the bladder of a male patient. Foley catheter with balloon in the bladder of a male patient.
Three abnormal curvatures of the spine: (A) kyphosis; (B) lordosis; (C) scoliosis. Three abnormal curvatures of the spine: (A) kyphosis; (B) lordosis; (C) scoliosis.
Instructing a Patient to Use Crutches Correctly Instructing a Patient to Use Crutches Correctly
National Patient Safety Goals for Acute-Care Hospitals National Patient Safety Goals for Acute-Care Hospitals
Video: Reflex arc construction

For a complete list of videos, visit our video library