What is the difference between congestive heart failure and myocardium?
The myocardium (composed of cardiomycocytes) receives its blood supply from branches of the coronary arteries. The pulmonary semilunar valve is the anterior most valve within the human heart. Congestive heart failure means that the pumping efficiency of the heart is depressed so that there is inadequate delivery of blood to body tissues.
Why do the ventricles contract during the cardiac cycle?
As pressure in the aorta rises due to conditions such as atherosclerosis, the ventricle must contract with more force to create the additional pressure needed to open the aortic valve. During which phase of the Cardiac Cycle is blood leaving the ventricles?
What is hypotension of the heart?
Hypotension is diastolic blood pressure below 100 mm Hg. Coronary artery disease results from ________. What is a possible complication to arteriosclerosis? Which of these describes a fenestrated capillary?
Which system includes the heart and blood vessels?
Which chambers are in the correct order to best represent the flow of blood through the heart?
What are the events of an action potential of a ventricular cardiocyte?
What are the three layers of the heart wall?
Is systole proportional or proportional?
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Which layer of the heart is separated from the parietal pericardium by small space and pericardi?
The outer layer of the heart is a serous layer that is separated from the parietal pericardium by small space and pericardial fluid. Which of the following is one of the names for the outer layer of the heart?
What is the anterior most valve in the heart?
The pulmonary semilunar valve is the anterior most valve within the human heart.
Which chambers are lined by the endocardium?
The heart chambers are lined (on the inside) by the endocardium.
Which system includes the heart and blood vessels?
The cardiovascular system includes the heart and blood vessels.
Which chambers are in the correct order to best represent the flow of blood through the heart?
Place the following chambers in the correct order to best represent the flow of blood through the heart once blood has returned to the heart from the SVC and IVC. 1) Right atrium 2) right ventricle 3) left atrium 4) left ventricle.
What are the events of an action potential of a ventricular cardiocyte?
List in order the events of an action potential of a ventricular cardiocyte. 1. Voltage-gated Na channels open. 2. Influx of Na causes more Na channels to open; depolarization. 3. Na channels close as membrane potential peaks at +30 mV. 4. Ca enters through slow calcium channels; creates plateau.
What are the three layers of the heart wall?
diastole. List in order the three layers of the heart wall from deep to superficial. 1) Endocardium 2) myocardium 3) epicardium. Components of the cardiovascular system: Heart, arteries, veins, capillaries. The ___ are the lower chambers of the heart that pump blood to the lungs and to the body. ventricles.
Is systole proportional or proportional?
systole. Similar to increasin the volume of air in a deflated tire, the pressure and volume of blood being added to a chamber are: directly proportional (pressure and the volume of blood within a chamber are directly proportional.
