Which is referred to as the pacemaker of the heart? a. bundle of His b. Purkinje fibers c. AV node ...

Author Question: Which is referred to as the pacemaker of the heart? a. bundle of His b. Purkinje fibers c. AV node ... (Read 82 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

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.