Q.14:- Draw a standard ECG and explain the different segments in it. Answer:- Each peak in the ECG is identified with a letter from P to T (PQSRT) which corresponds…
Q.14:- Draw a standard ECG and explain the different segments in it. Answer:- Each peak in the ECG is identified with a letter from P to T (PQSRT) which corresponds…
Q.13:- Explain heart sounds. Answer:- The beating of heart produces characteristic sounds which can be heard by using stethoscope. In a normal person, two sounds are produced per heart…
Q.12:- Define a cardiac cycle and the cardiac output. Answer:- The sequential events in the heart which are repeated cyclically is called cardiac cycle and it consists of systole…
Q.11:- What is the significance of atrio-ventricular node and atrio-ventricular bundle in the functioning of heart? Answer:- AV Node and AV Bundles are responsible for conduction of heart beat to…
Q.10:- Sino-atrial node is called the pacemaker of our heart. Why? Answer:- Sino-atrial node (SAN) is a mass of neuromuscular tissue which lies in the wall of right atrium. It…
Q.9:- Why do we call our heart myogenic? Answer:- The heart of molluscs and vertebrates including humans is myogenic. It means heart beat is initiated in heart itself by a…
Q.8:- Describe the evolutionary change in the pattern of heart among the vertebrates. Answer:- Vertebrates have a single heart. It is a hollow, muscular organ composed of cardiac muscle fibres….
Q.7:- Write the differences between: (a) Blood and Lymph (b) Open and Closed system of circulation (c) Systole and Diastole (d) P-wave and T-wave Answer:- (a) Blood and Lymph Lymph…
Q.6:- What is meant by double circulation? What is its significance? Answer:- The type of blood circulation in which oxygenated blood and deoxygenated blood do not get mixed is termed…
Q.5:- What is the difference between lymph and blood? Answer:- Lymph Blood It is red-coloured fluid It is a colourless fluid. It contains plasma and lesser number of WBCs and…