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प्रश्न
The diagram given below represents a section of the human heart. Answer the questions that follow:
- Which parts of heart are in the diastolic phase? Give a reason to support your answer.
- Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
- What causes the heart sounds ‘LUBB’ and ‘DUP’?
- Name the blood vessels that supply oxygenated blood to the heart muscles.
- Draw neat labelled diagrams of a cross section of an artery and a vein.
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उत्तर
- Ventricles are in the diastolic phase. The arrows indicate blood entering the ventricles. During a ventricular diastole, the valves between atria and ventricles open which allow the entry of blood into the ventricles.
- 1: Pulmonary artery
2: Pulmonary veins - Closing of the bicuspid and tricuspid valves causes the ‘LUBB’ sound, and the closing of semilunar valves causes the ‘DUP’ sound.
- Coronary arteries supply oxygenated blood to the heart muscles.
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संबंधित प्रश्न
State the exact location of the Chordae tendinae
What is Diapedesis?
What are the average values of blood pressure in a normal adult human?
Is it true that your heart beats more than one lac times per day?
Name the following:
Any one vein which starts from an organ and ends in another organ besides the heart
Differentiate between members of the following pairs with reference to the aspect asked within bracket:
artery and vein (type of blood primarily flowing through)
What is the function of spleen?
You can see some blood vessels on the outside of the hands specially in older people. Are those veins or arteries? How can you confirm your answer?
Complete the following sentence with appropriate word:
The membranous covering of the heart is _______.
Name these:
Three circulating fluids in human body.
