WorksheetsRevision : The Heart
Total questions: 10
Worksheet time: 5mins
Which of below is NOT the trilaminar layer of the germs layer?
Ectoderm
Mesoderm
Endoderm
Exoderm
Which part of the primitive heart tube gives rise to the pulmonary artery and the aorta?
Truncus arteriosus
Primitive ventricle
Bulbus cordis
Sinus venosus
What happen during the looping of the heart?
Heart will form a region to a ventral (frontal) position.
Initially forms a C-shape and then form into an S-shape.
Indicating sections of heart tube that will form parts of adult heart.
A primordial muscular ridge exists in the floor of the ventricle.
Choose the CORRECT sequence of current flow through the heart wall
AV node, SA node, Purkinje fibers, AV bundle of His, right and left
bundle branches.
SA node, AV node, AV bundle of His, right and left bundle branches, Purkinje fibers
SA node, Purkinje fibers, AV node, AV bundle of His, right and left bundle branches
AV node, Purkinje fibers, AV node, AV bundle of His, right and left bundle branches.
Cardiac output is__________.
approximately 500mL/min in a 70kg man
total volume of blood ejected by ventricle per unit time
depends on ejection fraction and heart rate
In steady state, does not equal to venous return
Which of the following is TRUE regarding stroke volume?
Stroke volume is typically about 70mL.
End systolic volume is the volume of blood in ventricle after ejection
Normal ejection fraction is 15%.
Stroke volume is an indicator of contractility.
During pulmonary circulation blood leaves the ___________.
right ventricle and goes directly to the aorta
right ventricle and moves to the lungs
right atrium and goes directly to the left ventricle
right atrium and goes directly to the lungs
Which of the following consider as the pacemaker of the heart?
AV node
SA node
Bundle of His
Purkinje fibers
Which of below is NOT the features of an outcome for ECG?
W wave
P wave
QRS complex
T wave
During diastole, a chamber of the heart
relaxes and fills with blood
Contracts and pushes blood into an adjacent chamber
Experience a sharp increase in pressure
Reaches a pressure of approximately 120 mm Hg
