« previous next »

Author Question: In 2:1 AV block, _____. a. the atrial rhythm (P-P interval) is regular b. the ventricular rhythm ... (Read 106 times)

student77

  • Hero Member
  • *****
  • Posts: 567
on: Jun 25, 2018
In 2:1 AV block, _____.
 
  a. the atrial rhythm (P-P interval) is regular
  b. the ventricular rhythm (R-R interval) is irregular
  c. the PR interval lengthens until a P wave appears with no QRS complex
  d. there is no PR interval because the atria and ventricles beat independently of each other

Question 2

The thick, muscular middle layer of the heart wall that contains the atrial and ventricular muscle fibers necessary for contraction is the __________.
 
  Fill in the blanks with correct word


AaaA

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jun 25, 2018
Answer to Question 1

A
Second-degree 2:1 AV block is characterized by P waves that are normal in size and shape, but every other P wave is not followed by a QRS. The atrial rate is twice the ventricular rate.

Answer to Question 2

myocardium


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Ventricular asystole. Ventricular asystole.
Examples of four letter formats: (A) block style, (B) modified block style, (C) modified block style ... Examples of four letter formats: (A) block style, (B) modified block style, (C) modified block style ...
The use of antispasmodics, which block release of Ach or calcium, can result in reduced pain as well ... The use of antispasmodics, which block release of Ach or calcium, can result in reduced pain as well ...
Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ... Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ...
Aspirin and most other NSAIDs block prostaglandins. Aspirin and most other NSAIDs block prostaglandins.
Regular Ways to Fold the Polypeptide Chain Regular Ways to Fold the Polypeptide Chain
Video: Acids and bases - definition

For a complete list of videos, visit our video library