QUESTIONS WITH COMPLETE SOLUTIONS
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⩥What 2 ways can blood enter the heart?.
Answer: →Superior vena cava
→Inferior vena cava
⩥Blood enters the heart via SVC and IVC but there is another exception.
What is it?.
Answer: Azygous veins
⩥The Azygous vein drains where?.
Answer: SVC
⩥What part of the heart is this?
→ P-wave starts at sinoatrial node in crista terminalis
→ impulse travels to AV node.
Answer: Right Atrium
,⩥What happens when there is a SA node impulse to AV node and
delayed (P-R) interval?.
Answer: AV Nodal Delay
⩥What part of the heart is this?
→end of diastole 120ml
→tricuspid valve closes S-1
→heart sound: isovolumetric contraction.
Answer: Right ventricle
⩥Name this EKG:
→ QRS complex (ventricular contract).
Answer: Ventricular depolarization
⩥What part of the heart is this?
→ mid-systole (halfway through)= enough pressure to blow open
pulmonic semilunar valves.
Answer: pulmonary artery
⩥What part of the heart is this?
→ blood exits via 2 pulmonary arteries to lungs.
Answer: pulmonary artery
,⩥What carries DE-O2 blood?.
Answer: pulmonary artery
⩥What carries DE-O2 blood?.
Answer: umbilical artery
⩥Ventricular filling is ____% passive and ____% active.
Answer: 80% passive
20% active from atrial contraction
⩥SA node impulse to AV node is shown as what on an ECG?.
Answer: P-R interval
⩥At the end of diastole the right ventricle contains _______ amount of
blood.
Answer: 150ml
⩥S1 =
S2 =.
Answer: →AV Valves - S1
, →Semilunar - S2
⩥QRS =.
Answer: Ventricular depolarization + consequent contraction
⩥Isovolumetric contraction begins at ____ and ends as semilunar valves
open.
Answer: S1
⩥Isovolumetric Relaxation begins at ____ and ends as the AV valves
open.
Answer: S2
⩥The highest concentration of blood O2 is found in the.
Answer: Cardiac system
⩥Pulmonary vein and umbilical vein in fetus are the only veins that
carry.
Answer: Oxygenated blood
⩥Pulmonary artery and umbilical artery in fetus are the only arteries
that.
Answer: carry