Module 14: The Heart Flashcards
1
Q
what region is the heart located in
A
mediastinum
2
Q
Pericardium
A
protective save outer layer called fibrous pericardium Serous pericardium (parietal, visceral layer adheres to heart) Pericardial cavity Pericardial fluid (50ml)
3
Q
3 layers of heart wall
A
epicardium (outer)
myocardium (middle)
endocardium (inner)
4
Q
Heart chambers
A
right and left atrium (separated by interatrial septum)
left and right ventricle (separated by interventricular septum)
5
Q
Septa
A
divides right and left chambers
6
Q
Fibrous skeleton
A
separates upper and lower chambers
7
Q
Heart valves
A
2 AV valves (tricuspid and mitral)
2 semilunar valves (pulmonary and aortic)
8
Q
total pulmonary circulation takes
A
23 seconds
9
Q
systole
A
contraction phase
10
Q
diastole
A
relaxation phase
