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The walls of ventricles are much thicke...

The walls of ventricles are much thicker than atria. Explain. 

Text Solution

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It is because the auricles are to send the blood to closely lying ventricles while later are to send to distantly located organs of the body e.g. right ventricle sends deoxygenated blood to the lungs present on the sides of heart, while left ventricle sends oxygenated blood to head above and even upto lower limbs of the body.
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Explore conceptually related problems

Give reasons for the following : (i) The muscular walls of ventricles are thicker than the walls of atria. (ii) Arteries have thick elastic walls. (iii) Veins have valves .

The wall of left ventricle is thicker than right ventricle.

Knowledge Check

  • Assertion (A): The muscular walls of ventricles are thicker than auricles. Reason (R): This helps in preventing the back flow of blood.

    A
    Both A and R are true and R is the correct explanation of A.
    B
    Both A and R are true but R is NOT the correct explanation of A.
    C
    A is true but R is false.
    D
    A is false and R is true.

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    a. Amphibians and reptiles have a 3 chambered heart with ___atria and ___ventricle. b. heart is ___derived organ and protected by a double walled membranous bag called____ c. The opening between right Atrium and Right ventricle is guarded by a valve formed of ___muscular flaps, the ___valve. d. The wall of ventricle is ____than atria. e. SAN can generate the maximum number of action potential i.e., ____ mi n^(-1) . therefore it is called_____ f Atrial systole increases the flow of lood into the ventricles by about ____percent. g. In____ all the four chambers of the heart are in a relax state. h. the ____wave represents the depolarisation of the atria. i. A system of blood vessels is present in our body exlusively for the circulation of blood to and from the cardiac musculature called_____ j. PNA____ the rate of heart beat and______

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