Question | Answer |
Name the two circulatory circuits of the cardiovascular system | system and pulmonary |
Right side of the heart recieves what type of blood? | CO2 |
Left side of heart- what kind of blood? | O2 |
CO2 blood from below the heart returns via the? | Inferior vena cava |
CO2 blood from above the heart returns via? | Superior vena cava |
CO2 blood from the myocardium returns via? | coronary sinus. |
Where will CO2 in the blood be given off and O2 picked up by the blood? | lungs |
_____ ______ brings O2 blood back to the heart | pulmonary veins |
____ _______ take CO2 away from the heart to the lungs | pulmonary arterys |
O2 blood is taken out of the heart and out to the body's tissue via the? | Aorta |
general size of heart? | clench fist |
Describe location of heart? | 1. posterior sternum2. medial lungs3. lies upon diaphram |
3 walls of the heart? | 1. epicardium2. myocardium3. endocardium |
inner wall of the heart? | endocardium |
outer wall of the heart? | epicardium |
middle muscle layer of the heart? | myocardium |
four heart valves? | 1. Left A-V Valve2. Right A-V Valve3.Pulmonary valve4. Aortic Valve |
Which two heart valves open when the heart is filling (at rest)? | Left and Right A-V Valve |
Which two heart valves are open when the heart is contracting (emptying)? | Pulmonary and Aortic |
Which two heart valves are closed when the heart is filling ( at rest)? | Pulmonary and Aortic (2nd beat) |
Which two heart valves are closed when the heart is contracting (emptying)? | Left and Right A-V vale (1st beat) |
the ____ _____ controls the blood flow from the left ventricle to aorta | Aortic valve |
____ ____ controls the blood flow from the left atrium to left ventricle | left A-V valve |
____ ____ controls the blood from the right atrium to right ventricle | right A-V valve |
____ ____ controls the blood flow from the right ventricle to the pulmonary artery | pulmonary valve |
6 corornary arteries | 1. right corornary artery2. left corornary artery3. Posterior interventricular artery4. Marginal5. Circumflex6. Anterior interventricular artery |
what is ment by systole? | beating heart |
diastole | heart is at rest |
Heart sounds | Lubb- 1st heart soundDupp- 2nd heart sound |
heart murmur? | abnormal heart beat; valve timing is off. dont close at the same time. |
____ ____ is the "pacemaker" of the heart | SA node |
____ ____ conducts the impulse to the ventricles of the heart | AV node |
electrocardium | conducts electrical changes in heart |
What occurs at each wave | P and QRS- depolarizationT- repoloarization |
two types of muscle fibers found in the myocardium | 1. atrial syncytium2. ventricular syncytium |
LA, RA, LV, RV, Pul art, Pul veins, Inf VC, Sup VC, Aorta, left AV, Right AV, Aoric valve, Pulm Valve | |