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Consider the following four statements (i) - (iv) and select the correct option.
(i) SA node is natural pacemaker of heart.
(ii) Human heart has inter-auricular foramen.
(iii) Right atrioventricular valve is a semilunar valve.
(iv) Normal systolic and diastolic pressure of humans is 120 and 60 mm Hg respectively.
  • a)
    i - F, ii - F, iii - T, iv - F
  • b)
    i - F, ii - F, iii - T, iv - T
  • c)
    i - T, ii - T, iii -F, iv - T
  • d)
    i - T, ii - F, iii - F, iv - F
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following four statements (i) - (iv) and select the corre...
SA node is natural pacemaker of heart. Human heart has inter-auricular septum. Right atrioventricular valve a tricuspid valve is Normal systolic and diastolic pressured of humans is 120 mm Hg and 80 mm Hg respectively.
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Most Upvoted Answer
Consider the following four statements (i) - (iv) and select the corre...
Answer:

The correct option is (d) i - T, ii - F, iii - F, iv - F.

Explanation:

(i) SA node is the natural pacemaker of the heart.
- The SA (sinoatrial) node is indeed the natural pacemaker of the heart. It is a specialized group of cells located in the right atrium. The SA node generates electrical impulses that regulate the heartbeat and initiate the contraction of the heart muscle.

(ii) Human heart has an inter-auricular foramen.
- This statement is incorrect. The correct term is "interatrial septum," not "inter-auricular foramen." The interatrial septum is the wall between the two atria of the heart, and it separates the left and right atrium. There is no foramen (opening) in the interatrial septum.

(iii) Right atrioventricular valve is a semilunar valve.
- This statement is incorrect. The right atrioventricular valve is also known as the tricuspid valve. It is located between the right atrium and the right ventricle. The tricuspid valve has three cusps and is classified as an atrioventricular valve, not a semilunar valve. Semilunar valves are located at the exit of the ventricles and include the pulmonary valve and the aortic valve.

(iv) Normal systolic and diastolic pressure of humans is 120 and 60 mm Hg respectively.
- This statement is incorrect. The normal range of systolic blood pressure (the higher number) for humans is considered to be around 90-120 mm Hg, not specifically 120 mm Hg. Diastolic blood pressure (the lower number) is typically around 60-80 mm Hg. Blood pressure can vary depending on factors such as age, health condition, and physical activity.

In conclusion, the correct option is (d) i - T, ii - F, iii - F, iv - F.
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Consider the following four statements (i) - (iv) and select the correct option.(i) SA node is natural pacemaker of heart.(ii) Human heart has inter-auricular foramen.(iii) Right atrioventricular valve is a semilunar valve.(iv) Normal systolic and diastolic pressure of humans is 120 and 60 mm Hg respectively.a)i - F, ii - F, iii - T, iv - Fb)i - F, ii - F, iii - T, iv - Tc)i - T, ii - T, iii -F, iv - Td)i - T, ii - F, iii - F, iv - FCorrect answer is option 'D'. Can you explain this answer?
Question Description
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