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प्रश्न
Short answer question.
What is the role of papillary muscles and chordae tendinae in the human heart?
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उत्तर
The bicuspid and tricuspid valves are connected to chordae tendineae which in turn are connected to the papillary muscles present on the ventricular wall. Chordae tendineae and papillary muscles regulate the opening and closing of valves.
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संबंधित प्रश्न
Given alongside is a highly diagrammatic sketch of the internal structure of the human heart:
(i) Name the parts numbered 1-11.
(ii) What is the main difference in the quality of blood contained in parts 6 and 7?
The figure below represents the internal structure of a mammalian heart and the associated blood vessels.
(i) (a) Name each of the structures labeled 1, 2, 3, 4, 5, 6, 7 and 8.
(b) State the function of each of the structures 5, 6, 7, and 8.
(ii) (a) State the function of the heart as an entire organ.
(b) Why are the walls of the left ventricle more muscular than the right?
Give Technical Term for the following:
What is the approximate weight of the heart of a man?
Choose the Odd One Out:
The phase of contraction of heart is termed as ______.
How many times per healthy man beats?
Complete the analogy.
The contraction of heart muscles: Systole:: Relaxation of heart muscles: ______.
The back flow of blood during the pumping of blood by the heart is prevented by:
Heart is covered with double-walled membrane called ______.
Given below is a diagram of the external features of the human heart. Study the figure and answer the questions that follows:
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- Label the guidelines shown as 1 to 6 in the figure.
- Write the important role of parts 5 and 6.
- Name the chamber of the heart which collects blood from the lungs through a blood vessel. Also write the name of the blood vessel.
- Write one structural and one functional difference between the blood vessels 4 and 5.
- What happens when there is a blockage in any coronary artery or any of their branches?
