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

Author Question: What makes it impossible for the myocardium to go into tetany? a. Absolute refractory period b. ... (Read 89 times)

Wadzanai

  • Hero Member
  • *****
  • Posts: 528
What makes it impossible for the myocardium to go into tetany?
 
  a. Absolute refractory period
  b. Automaticity
  c. Cardiac myofibrils
  d. Intercalated discs

Question 2

What is the ability of myocardial tissue to propagate electrical impulses?
 
  a. Automaticity
  b. Conductivity
  c. Contractility
  d. Excitability



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cam1229

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

ANS: A
Unlike those of other muscle tissues, however, cardiac contractions cannot be sustained or teta-nized because myocardial tissue exhibits a prolonged period of inexcitability after contraction. The period during which the myocardium cannot be stimulated is called the refractory period.

Answer to Question 2

ANS: A
Inherent rhythmicity or automaticity is the unique ability of the cardiac muscle to initiate a spon-taneous electrical impulse.





 

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Medication errors are three times higher among children and infants than with adults.

For a complete list of videos, visit our video library