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Question
Define the following term:
Heart
Solution
The heart is a hollow muscular vertebrate organ that pumps blood through rhythmic contractions.
RELATED QUESTIONS
Which of the following is mesodermal is the origin?
The human body has an organ A which acts as a double pump. The oxygenated blood coming from the lungs through blood vessel B enters the upper left chamber C of the double pump. When chamber C contracts, then blood goes into the lower left chamber D. The contraction of chamber D forces the blood to go into a blood vessel E which supplies oxygenated blood to all the organs of the body (except the lungs). The deoxygenated blood coming out of the body organs is taken by a blood vessel F to the right upper chamber G of the pumping organ. Contraction of chamber G forces the deoxygenated blood into the right lower chamber H. And finally, the contraction of chamber H sends the deoxygenated blood into the lungs through blood vessel I.
- What is organ A?
- Name the blood vessel (i) B (ii) E (iii) F, and (iv) I.
- What are chambers (i) C, and (ii) D?
- What are chambers (i) G and (ii) H?
What is Sinus arrhythmias?
Explain with the help of a suitable diagram conducting system of human heart.
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.
State the Function: Chordae tendinae
Which of the following has thickest wall?
Assertion: Human heart does not allow the mixing of oxygen to reach blood with carbon dioxide to reach the blood.
Reason: Human heart has different chambers.
The walls of the heart is made up of cardiac muscle.
A man's heart rate is 68 and cardiac output is 5440. Find the stroke volume.
