Card Set Information
What is systemic circulation?
the movement of oxygenated blood to all areas of the body and returning the de-oxygenated blood to the heart
What is pulmonary circulation?
circulates blood through the lungs
What are the divisions of the circulatory system?
lymph vascular system
blood vascular system
What are the types of blood vessels?
inner structure of blood vessels
part of the blood vessel that dilates and constricts
CT fibers that give blood vessels their structure
de-oxygenated blood goes to the:
right side of the heart
oxygenated blood goes to the:
left side of the heart
fibrous outer layer of the heart
serous covering between the pericardium and endocardium
inner-endothelial lining found in the chambers and valves
thick, striated, muscle layer that causes the heart to pump
which valve is on the left side of the heart?
which valve is on the right side of the heart?
What is the chordae tendinae?
prevents valves from prolapse
supported by papillary muscles
What is the sinoatrial node of the heart?
"pacemaker" of cardiac system
start of action potential in cardiac muscle
What does the atrioventricular node do?
slows down the propagation of action potential in cardiac muscle
What do purkinjie fibers do?
create the action potential
What is a cardiac cycle?
one complete contraction and relaxation of the heart
relaxation of the heart chamber prior to and during the filling of that chamber
contraction of the heart chamber to drive blood out of it
What valves are open/closed during diastole?
What valves are open/closed during atrial systole?
What valves are open/closed during isovolumetric ventricular contraction?
What valves are open/closed during ventricular ejection?
What valves are open/closed during isovolumetric ventricular relaxation?
What is cardiac output?
the amount of blood pumped from a ventricle into its vessel in a certain amount of time
cardiac output is the product of:
heart rate and stroke volume
SV * HR= Q
What can you do to increase cardiac output?
increase stroke volume
increase heart rate
How much blood is in an organism?
8-10% of their body weight
How much blood is in each part of the circulatory system?
What makes up blood?
WBCs & platelets < 1%
What is the Hct of blood?
35-45% at rest
50-70% during exercise
How do you determine plasma volume?
using Evans blue
What is plasma volume at rest and during exercise?
16-31 L at rest
38-64 ml/Kg of body weight during exercise
What makes up plasma?