« previous next »

Author Question: Which is referred to as the pacemaker of the heart? a. bundle of His b. Purkinje fibers c. AV node ... (Read 80 times)

s.tung

  • Hero Member
  • *****
  • Posts: 577
on: Jun 25, 2018
Which is referred to as the pacemaker of the heart?
 a. bundle of His b. Purkinje fibers
  c. AV node d. sinoatrial node

Question 2

Which does NOT carry oxygenated blood?
 a. aorta
  b. pulmonary artery
  c. pulmonary vein
  d. All of the above carry oxygenated blood.


Moriaki

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jun 25, 2018
Answer to Question 1

d

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Conduction System of the Heart Conduction System of the Heart
Interior view of the heart chambers. Interior view of the heart chambers.
The fibers are made up of many myofibrils The fibers are made up of many myofibrils
Heart Heart
Internal Heart Anatomy Internal Heart Anatomy
Heart Valves and Circulation of Blood Heart Valves and Circulation of Blood
Video: Gastroesophageal Reflux Disease (GERD)

For a complete list of videos, visit our video library