Heart chambers

Question 1

What are the heart chambers?

Answer 1

right atrium
right ventricle
left atrium
left ventricle

Question 2

What is the sequence of blood flow through the heart?

Answer 2

1. Atria fill with blood
2. Ventricles relax, AV valves open, elasticity of atria forces blood into ventricles; 80% of ventricle blood enters this way
3. Atria pump at end of this cycle; which drives remaining 20% of blood into ventricles.
4. Ventricles contract, increase pressure causing AV valves to close and semilunar valves to open
5. As blood leaves, ventricles relax, semilunar valves close, AV valves open

Question 3

What are the places where blood enters the right atrium?

Answer 3

SVC
IVC
coronary sinus
anterior cardiac veins

Question 4

What are distinct features of the right atria?

Answer 4

Crista Terminalis
sulcus terminalis cordis
pectinate muscles
interatrial septum
fossa ovalis
limbus fossa ovalis

Question 5

What forms the most anterior surface of the heart?

Answer 5

right ventricle

Question 6

How does the blood travel to the lungs?

Answer 6

via the conus arteriosus

denoted by smooth surface

Question 7

What valve does the blood pass through to pulmonary artery?

Answer 7

pulmonary valve

Question 8

What features are associated with the right ventricle?

Answer 8

trabeculae carneae
papillary muscles
chordae tendineae
tricuspid valves (anterior, posterior, and septal) 
septomarginal trabecular
cardiac conductive fibers (Purkinje)

Question 9

What forms the base of the heart?

Answer 9

left atrium

Question 10

What features are associated with the left atrium?

Answer 10

interatrial septum

fossa ovale
Mitral valve

Question 11

What features are associated with the left ventricle?

Answer 11

chordae tendineae
papillary muscles
mitral valve
aortic valve (three leaflets)