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प्रश्न
What prevents the backflow of blood inside the heart during contraction?
पर्याय
Thick muscular walls of ventricles
Valves
Thin walls of atria
All of the above
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उत्तर
Valves
During contraction, valves prevent the back-flow of blood inside the heart.
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संबंधित प्रश्न
The blood leaving the tissues becomes richer in:
Fill in the blank with suitable word given below:
The blood loaded with carbon dioxide from the body comes into the __________ of the heart.
Fill in the blank.
In human body, heart is located on the _____ side of the chest cavity.
Label the following diagram :
Choose the correct answer:
Bundle of 'His' is found in ___________
Name the Following
Number of chambers present in the human heart.
Complete the following sentence with appropriate word:
The ______ is the most powerful organ in the circulatory system.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The heart of a normal human adult beats more than one lakh times per day.
State the Location: Sino-auricular node
State the Function: Bundle of His
Blood is pumped by
Describe the structure and working of the human heart.
How many times per healthy man beats?
The given diagram represents the conducting system of human heart. Identify 1, 2, 3, 4.
Observe the diagram, Identify the parts labelled as P, Q, R, S. Choose the correct option for the conduction of cardiac impulse.
The walls of the heart is made up of cardiac muscle.
Draw the neat Labelled diagram of the internal structure of the human heart.
Give reason:
Pulmonary veins carry oxygenated blood.
