Cardiovascular system Flashcards Preview

Anatomy and Physiology > Cardiovascular system > Flashcards

Flashcards in Cardiovascular system Deck (19):
0

What makes up the cardiovascular system?

-Heart
-Blood vessels
-Blood

1

What is the function of the heart?

Pump blood

2

What is the function of blood vessels?

Carry blood to/from tissue cells throughout the body

3

Where is the heart located?

Within the mediastinum, left of the midline

4

What covers the heart?

Pericardium
-Fibrous pericardium (outer layer)
-Serous pericardium (inner double-layered part)
•visceral pericardium ("epicardium")
•parietal pericardium
-Pericardial cavity
-"Pericarditis"
-"Pericardial Effusion"

5

What is the pericardium?

Sac enclosing (protecting) the heart.

6

What are the layers of the heart wall?

1) Epicardium
2) myocardium
3) endocardium

7

How many layers does the heart wall have?

3

8

What is the Epicardium and what is its function?

-outermost layer of the heart wall
-visceral layer of serous pericardium
-protection

9

What is the myocardium and what is its function?

-middle layer of the heart wall
-largest layer of the heart wall
-cardiac muscle
-pumping action

10

What is the largest layer of the Heart Wall?

Myocardium

11

How many chambers does the heart have?

4

12

Name the 4 chambers of the heart.

Left and right atria
left and right ventricles

13

What are Sulci?

Grooves

14

What is the function of the Right Atrium?

-Receives deoxygenated blood from 3 veins.
-Superior vena cava.
-Inferior vena cava.
-Coronary sinus.
-Blood passes from RA to Right Ventricle

15

What is the function of the Right Ventricle?

Pumps blood to the Pulmonary Circuit via the Pulmonary Trunku.
-Pulmonary trunk to the Right and Left pulmonary arteries

16

What is the function of the left atrium?

-Receives oxygenated blood from 4 veins.
-Right and left pulmonary veins.
-Blood passes from LA to left ventricle.
(It is well oxygenated because it just came back from the lungs)

17

What is the function of the left ventricle?

-Pumps blood to the "systematic circuit"
via the Aorta (the largest artery in the body)
(Blood going everywhere except the lungs)

18

What are the functions of the heart valves?

-Prevent backflow of blood.
-Open/close in response to pressure changes.