NUR 257 Test 1
- What are the three layers of the heart and where are they located?
Answer
Epicardium=outer protective layer Myocardium= the muscle tissues of the heart Endocardium=thin inner layer
- What valve is located between the right atrium and right ventricle?
Answer
Tricuspid Valve
- What valve is between the left atrium and left ventricle?
Answer
Mitral Valve
- What do the coronary arteries do?
Answer
supply blood to the heart
- What does the cardiac conduction system consist of?
Answer
SA node, AV node, bundle of His, bundle branches, and Purkinje fibers 1 / 2
- What is hemodynamics?
Answer
the balance of your body
- Blood flow through the heart
Answer
1-Superior & Inferior Vena Cava, 2-Rt Atri- um, 3-Tricuspid Valve, 4- Rt Ventricle, 5- Pulmonary Valve, 6-Pulmonary Artery, 7-
Lungs-pick up oxygen, 8-Pulmonary Veins, 9- Lt Atrium, 10- Mitral Valve (Bicuspid), 11-Lt Ventricle, 12- Aortic Valve, 13-Aorta, 14- Body
- What is the pacemaker of the heart?
Answer
SA node
- Electrical activation of cells "Excitement"
(caused by influx of sodium into cell while potassium exits cell)
Answer
Depolarization
- Return of Cells to resting state "Relaxation"
(caused by reentry of potassium into cell while sodium exits)
Answer
- / 2