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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
Draw a diagram of the human heart and label its parts.
Multiple choice question. Tick (✓) the correct choice:
Human heart has
- one auricle and one ventricle.
- two auricles and one ventricle.
- two auricles and two ventricles.
- one auricle and two ventricles.
Multiple choice question. Tick (✓) the correct choice:
The heartbeat is measured by an instrument called
- thermometer
- sphygmomanometer
- stethoscope
- none of the above
What is Sinus arrhythmias?
Name the following:
The valve of right auriculo-ventricular aperture.
Given alongside is a diagram of the external features of the heart.
(i) Name the parts ‘1’ to ‘7’.
(ii) What happens if the coronary artery gets an internal clot?
(iii) Which type of blood does part ‘5’ carry?
(iv) Mention one structural difference between part ‘5’ and ‘4’.
The diagram given below represents the human heart in one phase of its functional activities. Study the same and answer the questions that follow:
(i) Name the phase.
(ii) Label the parts 1, 2 and 3
(iii) Which part of the heart is contracting in this phase ? Give a reason to support your answer.
Draw diagram of conducting system of human heart. Label SA node and bundle of His.
Why are the walls of the left ventricle thicker than the other chambers of the heart?
The walls of the heart is made up of cardiac muscle.
