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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): The muscular walls of ventricles are thicker than auricles.
Reason (R): This helps in preventing the back flow of blood.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'C'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) ...
Since ventricles have to pump blood into various organs, they have thicker muscular walls than atria do. Valves prevent back flow of blood.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion (A): The muscular walls of ventricles are thicker than auricles.
Reason (R): This helps in preventing the backflow of blood.
To analyze the given statements, let's break it down into two parts:
Assertion (A): The muscular walls of ventricles are thicker than auricles.
This statement is true. The ventricles are the lower chambers of the heart, responsible for pumping blood out of the heart. They have thicker muscular walls compared to the auricles or atria. The thicker walls of the ventricles provide the necessary strength and force to pump the blood to the rest of the body.
Reason (R): This helps in preventing the backflow of blood.
This statement is false. The primary function of the muscular walls of the ventricles is not to prevent the backflow of blood, but rather to generate enough pressure to push the blood out of the heart and into the circulatory system. The valves in the heart, specifically the atrioventricular (AV) valves and the semilunar valves, are responsible for preventing the backflow of blood.
Explanation:
The thickness of the ventricular walls is essential for their pumping function. The left ventricle, in particular, has the thickest walls as it needs to generate enough pressure to pump oxygenated blood to all parts of the body. The right ventricle, on the other hand, pumps deoxygenated blood to the lungs for oxygenation.
The valves in the heart, including the AV valves (tricuspid and bicuspid valves) and the semilunar valves (aortic and pulmonary valves), prevent the backflow of blood. When the ventricles contract, the AV valves close, preventing blood from flowing back into the atria. Similarly, when the ventricles relax, the semilunar valves close, preventing blood from flowing back into the ventricles from the aorta and pulmonary artery.
Therefore, the correct answer is option 'C' - Assertion (A) is true, but reason (R) is false. The thicker muscular walls of the ventricles contribute to their pumping function, while the valves in the heart prevent the backflow of blood.
Reason (R): This helps in preventing the backflow of blood.
To analyze the given statements, let's break it down into two parts:
Assertion (A): The muscular walls of ventricles are thicker than auricles.
This statement is true. The ventricles are the lower chambers of the heart, responsible for pumping blood out of the heart. They have thicker muscular walls compared to the auricles or atria. The thicker walls of the ventricles provide the necessary strength and force to pump the blood to the rest of the body.
Reason (R): This helps in preventing the backflow of blood.
This statement is false. The primary function of the muscular walls of the ventricles is not to prevent the backflow of blood, but rather to generate enough pressure to push the blood out of the heart and into the circulatory system. The valves in the heart, specifically the atrioventricular (AV) valves and the semilunar valves, are responsible for preventing the backflow of blood.
Explanation:
The thickness of the ventricular walls is essential for their pumping function. The left ventricle, in particular, has the thickest walls as it needs to generate enough pressure to pump oxygenated blood to all parts of the body. The right ventricle, on the other hand, pumps deoxygenated blood to the lungs for oxygenation.
The valves in the heart, including the AV valves (tricuspid and bicuspid valves) and the semilunar valves (aortic and pulmonary valves), prevent the backflow of blood. When the ventricles contract, the AV valves close, preventing blood from flowing back into the atria. Similarly, when the ventricles relax, the semilunar valves close, preventing blood from flowing back into the ventricles from the aorta and pulmonary artery.
Therefore, the correct answer is option 'C' - Assertion (A) is true, but reason (R) is false. The thicker muscular walls of the ventricles contribute to their pumping function, while the valves in the heart prevent the backflow of blood.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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Here you can find the meaning of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): The muscular walls of ventricles are thicker than auricles.Reason (R): This helps in preventing the back flow of blood.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 10 tests.
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