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Direction: Study the given descriptions and answer the following questions.
Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.
Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.
Q. Muscular tissues that functions throughout life without fatigue :
- a)Striated muscles
- b)Smooth muscles
- c)Cardiac muscles
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
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Direction: Study the given descriptions and answer the following ques...
Cardiac muscle: Heart muscles are called cardiac muscles. They beat throughout life without getting tired.
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Direction: Study the given descriptions and answer the following ques...
Muscular tissues that function throughout life without fatigue are the cardiac muscles. Cardiac muscles are a specialized type of muscle tissue found only in the heart. They are responsible for the continuous pumping of blood throughout the body, ensuring that oxygen and nutrients are delivered to all cells and tissues.
Here is a detailed explanation of why cardiac muscles function without fatigue:
1. Structure and Characteristics of Cardiac Muscles:
- Cardiac muscles are striated muscles, meaning they have a striped appearance under a microscope.
- These muscles are involuntary, meaning they are not under conscious control.
- They have a branched structure, with intercalated discs that allow for rapid transmission of electrical signals.
- Cardiac muscles contain a large number of mitochondria, which are responsible for producing energy through aerobic respiration.
2. Continuous Energy Supply:
- Unlike skeletal muscles, which can fatigue after prolonged use, cardiac muscles are designed to function continuously without fatigue.
- The high number of mitochondria in cardiac muscles provides a constant supply of energy in the form of ATP (adenosine triphosphate).
- ATP is essential for muscle contraction, and the continuous energy supply ensures that the heart can contract and relax rhythmically without tiring.
3. Specialized Conduction System:
- The heart has its own specialized conduction system that controls the electrical impulses necessary for coordinated contraction.
- This system includes the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, and Purkinje fibers.
- The electrical signals generated by these structures ensure that the cardiac muscles contract in a synchronized and coordinated manner.
4. Adaptations to Stress:
- Cardiac muscles have the ability to adapt to varying levels of stress and workload.
- Regular exercise can lead to hypertrophy (enlargement) of the cardiac muscles, allowing them to pump blood more efficiently.
- However, excessive stress or disease conditions can lead to pathological changes, such as cardiomyopathy.
In conclusion, cardiac muscles are specialized muscles found in the heart that function continuously without fatigue. Their unique structure, continuous energy supply, specialized conduction system, and ability to adapt to stress contribute to their ability to sustain rhythmic contractions throughout a person's life.
Here is a detailed explanation of why cardiac muscles function without fatigue:
1. Structure and Characteristics of Cardiac Muscles:
- Cardiac muscles are striated muscles, meaning they have a striped appearance under a microscope.
- These muscles are involuntary, meaning they are not under conscious control.
- They have a branched structure, with intercalated discs that allow for rapid transmission of electrical signals.
- Cardiac muscles contain a large number of mitochondria, which are responsible for producing energy through aerobic respiration.
2. Continuous Energy Supply:
- Unlike skeletal muscles, which can fatigue after prolonged use, cardiac muscles are designed to function continuously without fatigue.
- The high number of mitochondria in cardiac muscles provides a constant supply of energy in the form of ATP (adenosine triphosphate).
- ATP is essential for muscle contraction, and the continuous energy supply ensures that the heart can contract and relax rhythmically without tiring.
3. Specialized Conduction System:
- The heart has its own specialized conduction system that controls the electrical impulses necessary for coordinated contraction.
- This system includes the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, and Purkinje fibers.
- The electrical signals generated by these structures ensure that the cardiac muscles contract in a synchronized and coordinated manner.
4. Adaptations to Stress:
- Cardiac muscles have the ability to adapt to varying levels of stress and workload.
- Regular exercise can lead to hypertrophy (enlargement) of the cardiac muscles, allowing them to pump blood more efficiently.
- However, excessive stress or disease conditions can lead to pathological changes, such as cardiomyopathy.
In conclusion, cardiac muscles are specialized muscles found in the heart that function continuously without fatigue. Their unique structure, continuous energy supply, specialized conduction system, and ability to adapt to stress contribute to their ability to sustain rhythmic contractions throughout a person's life.
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Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer?
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Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer?.
Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Direction: Study the given descriptions and answer the following questions.Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.Q. Muscular tissues that functions throughout life without fatigue :a)Striated musclesb)Smooth musclesc)Cardiac musclesd)None of theseCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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