Question

Match the valves of human heart in Column I with the respective opening they guard in Column II and select the correct option.

Column I	Valve	Column II	Opening Guarded
i	Eustachian valve	a	Opening of pulmonary aorta
ii	Thebesian valve	b	Left atrioventricular aperture
iii	Mitral valve	c	Opening of inferior vena cava
iv	Semilunar valve	d	Opening of coronary sinus

• A. i-c ii-d iii-b iv-a
• B. i-c ii-d iii-a iv-b
• C. i-d ii-c iii-b iv-a
• D. i-b ii-a iii-c iv-d

Hint:

Remember: Eustachian → IVC, Thebesian → Coronary sinus, Mitral → LA→LV, Semilunar → Arteries

Answer 1

The Correct Option is A

i. Eustachian valve
It guards the opening of inferior vena cava into the right atrium.
$\Rightarrow$ i $\rightarrow$ c ii. Thebesian valve
It guards the opening of coronary sinus into the right atrium.
$\Rightarrow$ ii $\rightarrow$ d iii. Mitral valve (Bicuspid valve)
It guards the left atrioventricular aperture.
$\Rightarrow$ iii $\rightarrow$ b iv. Semilunar valve
These valves guard the opening of pulmonary artery (and aorta).
$\Rightarrow$ iv $\rightarrow$ a Final Matching: i-c, ii-d, iii-b, iv-a Final Answer: Option (A)