« 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 42 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?

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?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

(A) The nine regions of the abdominopelvic cavity. (B) The four regions of the abdomen, which are re (A) The nine regions of the abdominopelvic cavity. (B) The four regions of the abdomen, which are re
Location of the heart in the chest cavity. Location of the heart in the chest cavity.
HEART HEART
Heart Sounds Heart Sounds
The human heart The human heart
Sites of referred pain Sites of referred pain
Video: Ciliate conjugation Animation

For a complete list of videos, visit our video library