Mod 8 - Chapter 14: Heart

Question 1

Where can the strongest beat be felt or heard?

Answer 1

Apex - lower left

Question 2

Where is the base of the heart found?

Answer 2

Upper right - broadest part

Question 3

Where did the vessels enter and leave the heart

Answer 3

The base

Question 4

*What is the name of the double walled sac that surrounds the heart?

Answer 4

Pericardium

Question 5

*What is the name of the outer most layer of the pericardium? And what type of tissue does it consist of?

Answer 5

Fibrous pericardium - A loose fitting sack of strong connective tissue

Question 6

*What is the name of the layer that covers the hearts surface?

Answer 6

Serous Pericardium

Question 7

The pericardial cavity exist between the parietal layer and the visceral layer; it contains a small amount of serous fluid. What is the role of the serous fluid?

Answer 7

Helps prevent friction at the hearts base

Question 8

The heart wall has three layers. Where are they located and what do they consist of?

Answer 8

Endocardium - lines the heart chambers, covers the valves, and continues into the vessels. consists of a thin layer of squamos epithelial cells
Myocardium - Composed of cardiac muscle, forms the middle layer. It’s the thickest of the three layers and performs the work of the heart.
Epicardium - consist of a thin layer of squamous epithelium cells, covers the heart surface

Question 9

The heart contains four Hollow chambers. What are the names of the two upper chambers and the 2 lower chambers?

Answer 9

Upper = atria 
Lower = Ventricles

Question 10

What blood vessels carry blood away from the heart?

Answer 10

Arteries

Question 11

What blood vessels return blood to the heart?

Answer 11

Veins

Question 12

What blood vessels connect the smallest arteries to the smallest veins?

Answer 12

Capillaries

Question 13

What blood vessels supply the heart itself with blood?

Answer 13

Coronary arteries

Question 14

Where does the heart receive blood from the body or lungs

Answer 14

Atria

Question 15

Which part of the heart serves as pumps, receiving blood from the atria and then pumping it either to the lungs or the body?

Answer 15

Ventricles
Lungs - right ventricle
Body - left ventricle

Question 16

Where are the steps of blood flow through the heart?

Answer 16

Right atrium receives - Right ventricle - right and left pulmonary arteries and onto the lungs - Enters the pulmonary veins and returns to the heart through the left atrium - left ventricle - aorta

Question 17

*What are the names of the great vessels that transport blood to and from the heart?

Answer 17

Superior and inferior vena, pulmonary artery, four pulmonary veins