This topic contains a solution. Click here to go to the answer

Author Question: A patient's ECG was abnormal and the physician determined that a pacemaker was necessary. Which of ... (Read 78 times)

Yolanda

  • Hero Member
  • *****
  • Posts: 757
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
Answer to Question 1

c

Answer to Question 2

a




Yolanda

  • Member
  • Posts: 757
Reply 2 on: Aug 20, 2018
:D TYSM


TheNamesImani

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

For a complete list of videos, visit our video library