All About Cardiovascular System and Disorders

Blood vessel radius and resistance – MCQ Relation between the resistance of a blood vessel and its radius is governed according to Poiseuille’s Law. If vessel radius decreases,

Symptomatic coronary narrowing – MCQ Coronary narrowing by atheromatous plaque becomes symptomatic if the cross sectional area is reduced by –%: a) 40% b) 50% c) 60% d)

Determinant of LV preload – MCQ – Answer Which of the following is not a determinant of left ventricular preload? – Correct Answer: d) Aortic pressure Aortic pressure

Receptor in SA node – MCQ – Answer Under resting conditions, activity of which of the following receptors predominate in the SA node? – Correct Answer:  d) Muscarinic

Inferior and RVMI – MCQ – Answer If inferior wall of the left ventricle along with right ventricle is infarcted, the coronary artery occluded is – Correct answer:

Sinus node – MCQ – Answer Sinus node is situated at – Correct Answer: a) Junction of the superior vena cava and right atrium Sinus node is situated

Determinant of LV preload – MCQ Which of the following is not a determinant of left ventricular preload? a) End diastolic volume b) End diastolic pressure c) Left

Receptor in SA node – MCQ Under resting conditions, activity of which of the following receptors predominate in the SA node? a) Beta 1 b) Beta 2 c)

Inferior and RVMI – MCQ If inferior wall of the left ventricle along with right ventricle is infarcted, the coronary artery occluded is: a) Left anterior descending coronary

Sinus node – MCQ Sinus node is situated at: a) Junction of the superior vena cava and right atrium b) Junction of right atrium and left atrium c)