quick quiz and cover content Flashcards
What circuit of vessels delivers oxygenated blood to tissues/cells throughout the
body?
Systemic Circuit
What fluid-filled sac covers the heart to minimise friction to surrounding structures?
pericardium
What is the volume of blood present in each ventricle following the ejection phase
of the cardiac cycle known as?
End-systolic volume
The second heart sound is due to the simultaneous closure of the mitral (bicuspid)
and tricuspid values.
false
What does the QRS complex of an electrocardiograph (ECG) represent in the
cardiac cycle?
represents the depolarization of the ventricles during the cardiac cycle.
In what position or structure are cardiac muscle cells (myocardium) laid?
End-to-end with adjacent crossbridging
The time taken for the wave of electrical activity to pass from AV node to the
Bundle of His, bundle branches and Purkinje fibres before proceeding to
depolarise the ventricles is represented on an ECG by what interval?
PQ interval
What node initiates the electrical citation of the atria and is know as the hearts
pacemaker?
sinoatridal node
Bradycardia is a slow hear-rate?
true
Which major blood vessels deliver deoxygenated blood to the lungs?
The pulmonary arteries are the major blood vessels that deliver deoxygenated blood to the lungs.
Right Ventricle
Deoxygenated blood from the body returns to the right atrium and is then pumped into the right ventricle
Which major blood vessels deliver deoxygenated blood back to the heart?
Venae cavae
What is the name of the valve which separates the left aorta from the left ventricle?
Aortic valve
What is the event during early systole during which the ventricles contract with no
corresponding volume change in ventricular volume known as?
isovolumetric contraction.
To what extent are the ventricles filled with blood at the end of mid to late diastole?
99
