Chapter 19

Question 1

What’s another word for the right atrioventricular(AV) valve ?

Answer 1

Tricuspid valve

Question 2

What is the left atrioventricular(AV) valve also known as ?

Answer 2

Mitral valve, Bicuspid valve

Question 3

What’s tachycardia ?

Answer 3

A persistent, resting adult heart rate (HR) above 100bpm.

Question 4

What’s bradycardia ?

Answer 4

A persistent, resting adult heart rate under 60bpm.

Question 5

What is the term for factors outside the heart itself that raise the heart rate ?

Answer 5

Positive chronotropic agents

Question 6

What is the term for factors outside the heart itself that lower the heart rate ?

Answer 6

Negative chronotropic agents

Question 7

What is the heart ?

Answer 7

The muscular pump that keeps blood flowing through the blood vessels

Question 8

What does the pulmonary circuit do ?

Answer 8

Carry blood to the lungs for gas exchange and return it back to the heart

Question 9

What does the systemic circuit do ?

Answer 9

Supply blood to every organ of the body including other parts of the lungs and the wall of the heart itself

Question 10

Which side of the heart supplies the systemic circuit ?

Answer 10

The left side of the heart

Question 11

From which view of the heart is the left atrium visible ?

Answer 11

Posterior view

Question 12

How can you tell when you’re looking at the anterior view of the heart ?

Answer 12

You can clearly see the left and right auricles, the ligamentum arteriosum, and the pulmonary trunk

Question 13

How can you tell when you’re looking at the posterior view of the heart ?

Answer 13

You can see the coronary sinus and the left atrium

Question 14

Where does blood first enter the heart ?

Answer 14

Through the right atrium from the inferior and superior vena cava

Question 15

What is the second step of blood flow into the heart ?

Answer 15

The blood in the right atrium flows through the right AV valve into the right ventricle

Question 16

Once the right ventricle contracts, which valve opens ?

Answer 16

The pulmonary valve

Question 17

After the right ventricle contracts, where does the blood go ?

Answer 17

Through the pulmonary valve and into the pulmonary trunk

Question 18

Once the blood exits the pulmonary trunk, where does it go ?

Answer 18

To the lungs to unload carbon dioxide and load oxygen

Question 19

By which vessels does blood return from the lungs ?

Answer 19

Through the pulmonary veins into the left atrium

Question 20

Where does blood go after the left atrium ?

Answer 20

Through the left AV valve into the left ventricle

Question 21

What does contraction of the left ventricle do ?

Answer 21

Forces the aortic valve open & the blood flows through the aortic valve into ascending aorta

Question 22

Where does the blood in the aorta go ?

Answer 22

It supplies every organ in the body where it unloads oxygen and loads carbon dioxide

Question 23

After going through the systemic circuit, how does the blood return to the heart ?

Answer 23

Through the venae cavae