Cardiac

The opening of semilunar valves is due to

• increased ventricular pressure

• decrease ventricular pressure

• increased aortic pressure

• increase in artrial volume

Which component of ECG cycle shows ventricular depolarisation?

• P

• QRS

• T

• U

In the diagram below, which part of the tracing represents the contraction of the atria?

• P

• T

• R

• S

In the 6 second strip below, the heart rate is

• 7

• 60

• 70

• 75

What shows the time a signal is delayed at the AV nodes?

• PR segment

• ST segment

• PR interval

• QRS complex

Where is V1 located?

• 4th intercostal space at the left margin of sternum

• 4th intercostal space at the right margin of sternum

• 5th intercostal space at mid clavicular line

• 3rd intercostal space at mid axillary lline

Name part of red

• T wave

• Q wave

• R wave

• S wave

If there is higher pressure in the aorta, there will be no movement of blood out of the ventricle

• True

• False

The function of the atrium

• To collect blood

• To pump blood to the lungs

• To pump blood into systemic circulation

• To pump blood to the heart muscle

The entrance to the ascending aorta is guarded by

• an atrioventricular valve

• bicuspid valve

• semilunar valve

• tricuspid valve