Advertisements
Advertisements
प्रश्न
Answer the following:
What is specific in the heart of crocodiles among reptilians?
Advertisements
उत्तर
Crocodiles have a four-chambered heart (2 atria and 2 ventricles) with no mixing of oxygenated and deoxygenated blood, whereas reptiles have a three-chambered heart (2 atria and 1 ventricle).
APPEARS IN
संबंधित प्रश्न
Write the differences between open and closed system of circulation
Describe the evolutionary change in the pattern of heart among the vertebrates.
Sino-atrial node is called the pacemaker of our heart. Why?
Conversion of ammonia into uric acid occurs through --------------
A patient’s chart reveals that he has a cardiac output of 7500 mL per minute and a stroke volume of 50 mL. What is his pulse rate (in beats/min)
Distinguish between mitral valve and semi lunar valve.
What are the heart sounds? When and how are these sounds produced?
Select the correct biological term.
The substances which gives red cells their colour.
The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is ______.
The walls of ventricles are much thicker than atria. Explain.
Answer the following:
Which part of heart is responsible for initating and maintaining its rhythmic activity?
Cardiac activities of the heart are regulated by ______.
- Nodal tissue
- A special neural centre in the medulla oblongata
- Adrenal medullary hormones
- Adrenal cortical hormones
Choose the correct answer from the options given below:
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:
