anatomy and physiology Flashcards
structure of cardiovascular system
1
Q
what is heart
A
muscular organ that pumps blood throughout the body.
2
Q
how many chambers does heart have. what are they called
A
- left and right atrium and left and right ventricle
3
Q
septum
A
wall that separates left and right chambers
4
Q
blood vessels
A
carry blood throughout the body
5
Q
arteries
A
carries oxygenated blood away from the heart
6
Q
veins
A
deoxygenated blood back to the heart
7
Q
capillaries
A
connects arteries and veins
8
Q
blood
A
carries oxygen and nutrients to cells and carbon dioxide and waste away from cells
9
Q
cycles of contractions
A
systole and diastole
10
Q
systole
A
contractions of the heart
11
Q
diastole
A
relaxation of the heart
12
Q
hearts electrical system
A
sinoatrial node, atrioventricular node, bundle of his, left and right bundle branch, purkinje fibers
