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Choose the correct option. (i) Human h...

Choose the correct option.
(i) Human heart is ectodermal in origin.
(ii) Mitral valve guards the opening between right atrium and left ventricle.
(iii) SAN is located on the left upper corner of right atrium
(iv) Stroke volume `xx` heart rate = Cardiac output

A

(i) alone is correct

B

(i) and (ii) alone is correct

C

(ii) and (iii) alone are correct

D

(iv) alone is correct

Text Solution

Verified by Experts

The correct Answer is:
D
Human heart is mesodermal in origin.
Mitral valve guards the opening between left atrium and left ventricle.
SAN is located on the right upper corner of right atrium.
Stoke volume `xx` heart rate = Cardiac output
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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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Knowledge Check

  • Read the statements regarding the cardiac system and choose the right option. (i) Human heart is an ectodermal derivative (ii) Mitral valve guards the opening between the right atrium and left ventricle. (iii) SAN is located on the left upper corner of the right atrium (iv) Stroke volume x heart rate = cardiac output

    A
    (i) alone is correct
    B
    (i) and (ii) alone are correct
    C
    (ii) and (iii) alone are correct
    D
    (ii) and (iv) alone are correct

  • Which of the following statements (s) regarding the cardiac system is/are correct ? (i) Human heart is an ectodermal derivative (ii) Mitral valve guards the opening between the right atrium and left ventricle (iii) SAN is located on the left upper corner of the right atrium (iv) Stroke volume xx Heart rate = Cardiac output.

    A
    (i) only
    B
    (i) and (ii)
    C
    (ii) and (iii)
    D
    (iv) only

  • Read the statements regarding the cardiac system and choose the right option Human heart is an ectodermal derivative Mitral valve guards the opening between the right atrium and left ventricle SAN is located on the left upper corner of the right atrium Stroke volume xx Heart rate = Cardiac output

    A
    A alone is correct
    B
    A and B alone are correct
    C
    B and C alone are correct
    D
    B and D above are correct

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