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In which animal the heart pumps out only...

In which animal the heart pumps out only deoxygenated blood?

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### Step-by-Step Solution: 1. **Understanding the Question**: The question asks which animal has a heart that pumps only deoxygenated blood. This requires knowledge of the circulatory systems of different animals. 2. **Types of Hearts**: There are different types of hearts in the animal kingdom. Some animals have a heart that pumps both oxygenated and deoxygenated blood, while others have a heart that pumps only deoxygenated blood. 3. **Identifying the Venous Heart**: The type of heart that pumps only deoxygenated blood is known as a venous heart. This type of heart is typically found in animals that have a simpler circulatory system. 4. **Fishes as an Example**: Fishes are a prime example of animals with a venous heart. They possess a two-chambered heart consisting of one auricle and one ventricle. 5. **Circulation in Fishes**: In fishes, deoxygenated blood returns to the heart, enters the auricle, and is then pumped into the ventricle. From the ventricle, this blood is sent to the gills where it gets oxygenated. After oxygenation, the oxygen-rich blood is distributed to the body. 6. **Conclusion**: Therefore, the correct answer to the question is that fishes have a heart that pumps out only deoxygenated blood. ### Final Answer: **Fishes** are the animals in which the heart pumps out only deoxygenated blood. ---
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Explore conceptually related problems

Draw the diagram of sectional view of human heart and on it name and label the following parts: (a) The chamber of the heart that pumps out deoxygenated blood. (b) The blood vessel that carries away oxygenated blood from the heart. (c ) The blood vessel that receives deoxygenated blood from the lower part of our body.

Assertion : The heart of fish contains only deoxygenated blood. Reasoning : Oxygenated blood does not return back to the heart in fishes.

Knowledge Check

  • Read the following statements carefully (i) In fishes, the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body parts from where deoxygenated blood is returned to the heart. (ii) The openings of the right and the left ventricle into pulmonary artery and aorta respectively are provided with the mitral valves. (iii) The nodal musculature has the ability to generate action potential without any external stimuli, i,e., it is autoexcitable. (iv) The T-wave of ECG represents depolarisation of the ventricles. Which of the above four statements are incorrect?

    A
    (i) and (ii)
    B
    (ii) and (iv)
    C
    (i) and (ii)
    D
    (iii) and (iv)

  • All veins carry deoxygenated blood except

    A
    pulmonary vein
    B
    hepatic vein
    C
    hepatic portal vein
    D
    renal vein

  • Which one of the following blood vessels carries only deoxygenated blood?

    A
    pulmonary vein
    B
    pulmonary artery
    C
    aorta
    D
    capillaries

    • Similar Questions

    Explore conceptually related problems

    Given alongside is a diagram of the human heart showing its internal structure. Label the parts marked 1 to 6, and answer the following questions. Which chamber of the heart receives deoxygenated blood from the body?

    The organ that receives blood first when heart pumps oxygenated blood from left ventricle

    What is the pO_(2) in the oxygenated blood and deoxygenated blood?

    Name the chambers of heart which carry oxygenated blood?

    Which of the following statement (s) is (are) true about heart? (i) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs (ii) Left ventricle pumps oxygenated blood to different body parts while right ventrivle pumps deoxygenated blood to lungs (iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts (iv) Right atrium receives deoxygenated blood from different part of the body while left ventricle pumps oxygenated blood to dofferent parts of the body

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