A&P Chapter 11
After listening to Janetta's heart for several seconds, her doctor told Janetta that she has an incompetent right atrioventricular (AV) valve. What did Janetta's doctor hear that led to that conclusion?
a swishing sound heard after the right AV valve has closed
What is a common cause of valvular stenosis?
endocarditis
What is the function of the heart valves?
prevent backflow of blood
Which of these will decrease heart rate?
stimulation by vagus nerves
What term refers to the contraction of the heart?
systole
Jordan is told that while his atria are beating normally, his ventricles are beating slower than normal. His doctor suspects a heart block. Damage to what part of Jordan's heart is causing this problem?
the atrioventricular (AV) node
Which of the following occurs when the pressure in the ventricles rises higher than the pressure in the atria?
Atrioventricular valves close.
What information can a clinician obtain from an electrocardiogram (ECG)?
abnormality in electrical activity of heart
Which of the following is a warning sign of an impending myocardial infarction?
angina pectoris
What part of the heart's intrinsic conduction system carries impulses into the interventricular septum?
atrioventricular (AV) bundle
Where does the sinoatrial node send an impulse after it initiates the electrical signal?
atrioventricular (AV) node
Which of the following supply the myocardium with oxygen-rich blood?
coronary arteries
Which of the following is the correct order of events as disease gets progressively worse over time?
coronary atherosclerosis, congestive heart failure, pulmonary edema
Pericarditis is most closely related to which of the following cardiac conditions?
inadequate amounts of serous fluid
Through which valve will blood flow when leaving the right atrium?
tricuspid valve
Which of the following will slow the heart rate?
vagus nerve stimulation
What chamber of the heart will blood enter after passing through the bicuspid valve?
left ventricle
