A&P chapter 16 17
Which of the following supplies oxygenated blood to the heart muscles
Bicuspid and pulmonary veins
Under what condition is blood most likely to flow backward from the left ventricle back into the left atrium?
Bicuspid valve is malfunction
Which of the following structure sees oxygenated blood
Bicuspid, pulmonary veins
Which term refers to a heart rate less than 60 beats a minute
Bradycardia
Which term refers to the amount of blood pumped by the heart in one minute
Cardiac output
What is the cause of the heart sound lubb dubb
Closing of the valves
Where does the cardiac impulse contraction normally originated?
(SA) Nodes
Which of the following is a function of a valve?
A) keep the blood flowing in a forward direction. B) prevent back-flow
Referring to the ECG the P wave represents ?
Atrial depolarization
Systole and dyostole describe the function of the
Cardiac cycle
Heart rate and stroke volume determine
Cardiac output
Activation of the muscarinic receptors by acetychloline
Causes chromatic and dromotic
Most of the symptoms of acute left sided heart failure are
Cyanotic pulmonary edema
According to the ECG the QRS complex represents
Depolarization
Amount of blood in the ventricle at the end of its resting phase
End diastolic volume
Sympathetic stimulation to the heart causes
Increase (SA) nodes, speed of impulse and contraction
Which of the following refers to a positive inotropic effect
Increase in contractile force of impulse
Sympathetic nerve stimulation of the mayocardium
Increases heart rate
The aorta receives blood from
Left ventricle
The bicuspid or mitral valves received
Oxygenated blood
Which of the following is descriptive of the vagus nerve
Parasympathetic
An accumulation of excess fluid in the pericardial space
Pericardial effusion
Which of the following is the same as end-diastolic volune
Preload
Right ventricle pumped blood to
Pulmonary arteries
Ventricular systole refers to
Pumping of the ventricle
What are ventricles doing during atrial contraction
Relaxing and filling
The pacemaker of the heart is located on the upper
Right atrium
Jugular vein distention is most associated with
Right sided heart failure
Which of the following is most related to lubb
S1 cause by the closure of the av valves
Which of the following is true of the structure of the conduction system
Sa & av nodes r in the right atrium. 2) start with sinotrial sa nodes b)through the atrial conducting fibers c)to the atrioventricular (AV). D)to the bundle of his E) to the R & L bundle branches F) to the purkinje fibers
S2 is the closure of
Semilunar valve
The pulmonic and aortic valves are
Semilunar valves
Vagal stimulation to the heart caused
Slowing or stoppage of the heart
The atrioventricular nodes (AV)
Slows the cardiac impulse 40/60
The purkinje fiber
Spread electrical signal throughout the ventricle
A change in preload causes a change in myocardial contractile force. This response is known as
Starling's law
What term refers to the amount of blood pumped by the ventricle in one beat
Stroke volume
What r the two phases of the ventricle action potential
Systole and dyostole
During atrial systole
The atrial contract
What happen during atrial systole
The atrial contract
What is located at the second rib and fifth intercostal space
The heart
Purpose of the right heart is to pump blood to
The lungs
What are the conducting fibers that rapidly spreads the electrical signal throughout the ventricles
The purkinje fibers
What happen during the ventricular diastole
The ventricular relaxed
Blood flows from the R atrium through which atrioventricular valves to the R ventricle
Tricuspid
Which of the following sees unoxygenated blood?
Tricuspid, pulmonary arteries valves