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प्रश्न
Write the features that distinguish between the two.
Open and Closed circulatory system
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उत्तर
| Open circulatory system | Closed circulatory system |
| 1. Blood pumped by heart passes through large vessels into open spaces or body cavities called sinuses | 1. Blood pumped by the heart is always circulated through a closed network of blood vessels |
| 2. Less advantageous | 2. More advantageous |
| 3. Flow of fluid cannot be more precisely regulated | 3. Flow of fluid can be more precisely regulated |
| 4. It is present in arthropods molluscs, and hemichordates | 4. It is found in annelids and chordates |
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संबंधित प्रश्न
Write the differences between open and closed system of circulation
Describe the evolutionary change in the pattern of heart among the vertebrates.
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Right ventricular wall is thinner than the left ventricular wall. Why?
What are the heart sounds? When and how are these sounds produced?
The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is ______.
Read the following statements and choose the correct option
Statement 1: Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement 2: Action potential generated at sino-atrial node passes from atria to ventricles.
Define the following terms and give their location?
Purkinje fibre
The walls of ventricles are much thicker than atria. Explain.
Write the features that distinguish between the two.
Sino-atrial node and Atrio-ventricular node
Answer the following:
Which part of heart is responsible for initating and maintaining its rhythmic activity?
Answer the following:
What is specific in the heart of crocodiles among reptilians?
Following are the stages of pathway for conduction of an action potential through the heart:
- AV bundle
- Purkinje fibres
- AV node
- Bundle branches
- SA node
Choose the correct sequence of pathway from the options given below:
