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  • The superior vena cava, inferior vena cava and coronary sinus open into the  Option: 1 Right ventricle</

The superior vena cava, inferior vena cava and coronary sinus open into the

 

Option: 1

Right ventricle

 


Option: 2

Right atrium

 


Option: 3

Left atrium

 


Option: 4

Left ventricle

 


Answers (1)

Atria

 
  • This part is vertically divisible into right and left atria having thin walls
  • The left atria is smaller than the right atria
  • Each atria possess an appendage called auricle which increases the surface area of atrium.
  • Each atria extends behind into a swollen flap i.e. the auricular appendix.it slightly covers the ventricle of each side
  • Right, and left atria are separated by means of a thin septum called the interatrial septum or interauricular septum to prevent the mixing of oxygenated and deoxygenated blood.
  • An oval depression called fossa ovalis is found in the right atrium of the heart, at the level of the interatrial septum.
  • The fossa ovalis is the remnant of a thin fibrous sheet that covers the foramen ovale during foetal development.
  • The internal lining of the atrial wall forms a network of low muscular ridges called musculi pectinati 
  • The superior vena cava, inferior vena cava and coronary sinus open into the right atrium
  • Superior vena cava carries blood from the body’s upper region while inferior vena cava carries blood from the body’s lower region - 
  • Coronary sinus carries the majority of blood from the heart itself 
  • Right atrium receives deoxygenated blood  while left atrium receives oxygenated blood from the lungs (through two pairs of pulmonary veins)

The superior vena cava, inferior vena cava and coronary sinus open into the right atrium. Hence, the correct answer is option b.

Posted by

Sumit Saini

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