Chapter 12.1: Structure of the Heart Flashcards Preview

Medical Terminology > Chapter 12.1: Structure of the Heart > Flashcards

Flashcards in Chapter 12.1: Structure of the Heart Deck (32):
1

Define pericardium

fluid-filled sac located in the thoracic cavity that surrounds the heart

2

What are the five things the heart is connected to?

the aorta, the inferior and superior venae cavae, and the pulmonary veins and arteries

3

What are the four chambers of the heart?

the right and left atria; the right and left ventricles

4

Define septum

structure which separates the right and left sides of the heart

5

Define atrioventricular valves (AV)

valves that separate the the atria from the ventricles; they allow blood to flow only from the atrium into the ventricle

6

Define triscupid valve

also known as the right atrioventricular valve because it consists of three cusps

7

Define cusps

triangular flaps

8

Define bicuspid valve or mitral valve

also known as the left atrioventricular valve because it consists of two cusps

9

Define chordae tendineae

strong, fibrous chords that attach the cusps of each atrioventricular valve to the walls of the heart, this ensures that the valves close tightly, preventing backflow of blood

10

Define semilunar valve

half-moon-shaped valves where the blood is pumped through once it has been pumped from the atria into the ventricles

11

Define pulmonary semilunar valve

valve the right ventricle pumps blood through to get to the pulmonary artery

12

Define aortic semilunar valve

valve the left ventricle pumps blood through to get to the aorta

13

What are the three layers of the heart walls from inside out?

endocardium, myocardium, and epicardium

14

What type of tissue if the myocardium made of?

cardiac muscle tissue

15

What type of tissue if the endocardium made of?

epithelial tissue

16

What type of tissue if the epicardium made of?

connective and epithelial

17

Define parietal layer

the outer covering of the pericardium

18

Define visceral layer

also called the epicardium is the inner lining of the pericardium

19

What is fluid-filled sac located in the thoracic cavity that surrounds the heart?

pericardium

20

What is structure which separates the right and left sides of the heart?

septum

21

What are valves that separate the the atria from the ventricles; they allow blood to flow only from the atrium into the ventricle?

atrioventricular valves (AV)

22

What is also known as the right atrioventricular valve because it consists of three cusps?

tricuspid valve

23

What is also known as the left atrioventricular valve because it consists of two cusps?

bicuspid or mitral valve

24

What is strong, fibrous chords that attach the cusps of each atrioventricular valve to the walls of the heart, this ensures that the valves close tightly, preventing backflow of blood?

chordae tendineae

25

What are half-moon-shaped valves where the blood is pumped through once it has been pumped from the atria into the ventricles?

semilunar valves

26

What is the valve the right ventricle pumps blood through to get to the pulmonary artery?

pulmonary semilunar valve

27

What is the valve the left ventricle pumps blood through to get to the aorta?

aortic semilunar valve

28

What tissue of the heart is made of cardiac muscle tissue?

myocardium

29

What tissue of the heart is made of epithelial tissue?

endocardium

30

What tissue of the heart is made of connective and epithelial tissue?

epicardium

31

What is the outer covering of the pericardium called?

parietal layer

32

What is also called the epicardium and is the inner lining of the pericardium?

visceral layer

Decks in Medical Terminology Class (239):