The Heart
What is the heart?
an organ that pumps blood throughout your circulatory system
What do all blood vessels transport?
blood
Where is systemic circulation located?
all throughout the body
The disease of the buildup of fatty material within the walls of the artery
atherosclorosis
What is one way you can have a healthy circulatory system?
working out, eating healthy, not smoking
When does your heart beat speed up?
when you are working out or are frightened
What is the smallest blood vessel?
the capillaries
(True or false) Pulmonary circulation brings oxygen-poor blood to the heart and oxygen-rich blood to the lungs
false
A heart muscle usually dies or is damaged from which event
when not enough oxygen is reaching the heart
What is a way a risk factor for circulatory system diseases cannot be avoided?
when you inherit it from your parents
When does your heart beat slow down?
when you are sleeping
What is the largest artery?
the aorta
Where does blood leave your heart?
the aorta
Most strokes happen when what event occurs?
not enough oxygen reaches the brain
How does your circulatory system operate with your respiratory system?
they work together by moving oxygen throughout the body
How many chambers are in the heart?
four
What are the smaller vessel branches of arteries called?
arterioles
Which circulation supplies blood to cells in the heart
coronary circulation
Heart failure can result from which event?
a previous heart attack, a problem with the heart valves, or diseases that damage the heart
How does your circulatory system interact with your endocrine system?
it transports hormones throughout the body
Blood leaves the lower chambers through which structures?
the ventricles
Why is pressure lower in veins than in arteries?
capillaries separate them from the pumping action of the heart
How come cells in the heart are not able to be supplied with blood?
Hypertension happens when blood pressure is higher than which measure?
140/90 mm Hg