Advertisements
Advertisements
प्रश्न
Give scientific reason.
Human heart is called as myogenic and autorhythmic.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Where does blood absorb oxygen?
What is the importance of valves in the heart?
Why are the walls of the left ventricle thicker than the other chambers of the heart?
How do the pulmonary artery and pulmonary vein differ in their function when compared to a normal artery and vein?
A coronary sulcus is found ______
Complete the analogy.
The contraction of heart muscles: Systole:: Relaxation of heart muscles: ______.
______ valve is present at the opening of coronary sinus
Heart is covered with double-walled membrane called ______.
If a person has a heart attack, what must be done immediately?
P. Loosen his/her clothing
Q. Make him/her lie down in an airy room
R. Rush him/her to the hospital
S. Engage him/her in a conversation
Where is the following located?
Mitral valve
