Cardiovascular system Flashcards
1
Q
Heart
A
- Located in central of the chest (mediastinum)
- functions as pump to move blood throughout body
2
Q
Artery/arteriole
A
- thicked-walled vessels carry blood away from heart
- associated with pulse point
- propel blood with contraction
- smaller branches are arterioles
3
Q
Vein/venule
A
- vessels carry blood toward heart
- thinner-walled
- contain valves to prevent backflow
- smaller bracnhes are venules
4
Q
Capillary
A
- smallest blood vessels
- connect arterioles to venules
- aid in exchange of O2 and nutrients b/w blood and body cells
5
Q
Endocardium
A
innermost layer of cells that lines the atria, ventricle and heart valves
6
Q
Myocardium
A
muscular layer of the heart
7
Q
Pericardium
A
- outermost layer of the heart
- membrane around heart and secretes paricardial fluid
