Advertisements
Advertisements
प्रश्न
When are the sounds "LUBB" and "DUP" produced respectively during heart beat?
Advertisements
उत्तर
- The first sound LUBB, is produced when the atrioventricular valves, i.e. tricuspid and bicuspid, valves close at the start of ventricular systole.
- The second sound, DUBB, is produced at the beginning of ventricular diastole when the pulmonary and aortic semilunar valves close.
संबंधित प्रश्न
The blood from the heart is transported to all parts of the body by the ______.
Draw the structure of a human heart and label its parts.
Why do people have a common belief that the heart is located on the left side of the chest?
What is Endothelium?
What is the function of spleen?
Cardiac muscles are ______.
Choose the correct alternative.
What is the minimum number of the plasma membrane that oxygen has to diffuse across to pass from air in the alveolus to haemoglobin inside a RBC?
Which of the following health condition refers to the type of blood cancer in which uncontrolled increase in number of WBCs occurs?
Given below are four statements regarding human blood circulatory system:-
- Arteries are thick walled and have narrow lumen as compared to veins.
- Angina is acute chest pain when the blood circulation to the brain is reduced.
- Persons with blood group AB can donate blood to any person with any blood group under ABO system.
- Calcium ions play a very important role in blood clotting.
Which two of the above statements are correct?
The nodal tissue located in the lower left corner of right atrium is ______.
