Unit 3,cardiovascular system Flashcards
the heart
The hearts natural pacemaker is located in the
right atrium
Ischemia
Heart muscle loses blood supply
Infarction
Death of heart muscle cells
oxygenated blood is on the
left side
deoxygenated blood is on the
right side
The circulatory system is also known as the
Transportation system
What is this system made up of
-the heart
-blood
-blood vessels
-spleen
-veins
-arteries (& capillaries)
What is the muscular pump of the body
the heart
Where is the heart located
the mediastinal cavity
Endocardium
lines the inside of the heart
Myocardium
the thickest layer (muscular middle layer)
Pericardium
cover the outside of the heart-double layered membrane each layer is separate by pericardial fluid
The septum
muscular wall that separates the heart into right and left side
Why is the septum separated
prevents blood from flowing between the right & left side of the heart
What does the septum do
lines the inside of the heart
