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प्रश्न
Give scientific reason.
Human heart is called as myogenic and autorhythmic.
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उत्तर
- The heart shows autorhythmicity because the impulse for its rhythmic movement develops inside the heart. Such a heart is called myogenic.
- During development, certain heart muscle fibres become autorhythmic (self-excitable) and begin to generate impulses.
- These autorhythmic fibres have two vital functions: they operate as a pacemaker and set the heart's beat.
- They also form a conducting system for the conduction of nerve impulses throughout the heart muscles.
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संबंधित प्रश्न
Which of the following is mesodermal is the origin?
Fill in the blank with suitable word given below:
The two lower chambers of the heart are called ___________.
Name the following:
The first heart sound.
Choose the correct answer:
The mammalian heart is ___________
Choose the correct answer:
In mammals the opening of post caval in the right auricle is guarded by _________
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
What type of blood flows through the parts marked '1' and '2'?
Choose the Odd One Out:
Draw diagram of conducting system of human heart. Label SA node and bundle of His.
Which of the following event occurs during ventricular diastole?
Give scientific reason.
Human heart is called as myogenic and autorhythmic.
