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प्रश्न
Short answer question.
Describe valves of human heart.
उत्तर
Both the atria open into ventricles of their respective sides by atrioventricular apertures. The atrio-ventricular apertures are guarded by cuspid valves.
i. Cuspid valves:
These are bicuspid and tricuspid valves. The bicuspid valve also known as the mitral valve is present in the left atrio-ventricular aperture. Tricuspid valve is present in the right AV aperture.
ii. Eustachian valve:
It is present on the opening of the post-caval vein (inferior vena cava).
iii. Thebesian valve:
It guards the opening of the coronary sinus into the right atrium.
iv. Semilunar valves:
These three valves guard the opening between the right ventricle and pulmonary artery and left ventricle and aorta.
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संबंधित प्रश्न
Fill in the blank.
In human body, heart is located on the _____ side of the chest cavity.
The diagram given alongside represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
Name the phase.
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
Which part of the heart is contracting in this phase? Give a reason to support your answer.
Explain the Term
Pace maker
In between which layers of pericardium, pericardial fluid is present?
The blood does not flow back into the ______ when mitral valve closes.
____________ branches from bundle of His and forms a network in ventricular walls.
In human foetus, the heart begins to beat at developmental age of
The diagram below depicts the human heart in one of its phases. Answer the questions that follow:
- Which part of the heart is in the contraction phase?
- Give a suitable reason to justify your answer in (a).
- Distinguish between Systole and Diastole.
Give the exact location of the pericardium.
