1. Answer these questions.
1. What are the pumping chambers of heartcalled?
2. Which half of human heart has oxygenatedblood?
3. Why is lymph called filtered blood?
4. Mention the advantage of separation oxygenated anrdeoxygenated blood in
human heart.
5. In which part of body is blood oxygenated?
6. What is the function of pericardial fluid? Where
is it found?
7. Discuss function of cuspid valves.
8. What is double circulation?
9. Name the blood vessels which bring blood to
the heart and the vessels which carry blood
away from heart.
10. What are the risk factors of cardiac arrest?
11. Draw a labelled diagram of structure of
heart.
Answers
Answer:
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Step-by-step explanation:
1) The upper chambers are the called atria and act as the receiving chambers. The lower chambers are called ventricles; these are the pumping chambers.
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2) left ventricle
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3) Lymph is called as filtered blood because as we know that the lymph is formed from the interstitial fluid which is collected by lymphatic capillaries into the interstitium.T he composition of lymph is similar to Blood except for the formed elements in it. Thus, the lymph has a composition of blood plasma - the fluid component of blood.
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5) The right ventricle pumps the blood to the lungs where it becomes oxygenated.
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8) The heart receives deoxygenated blood from different parts of the body, and it pumps this blood to the lungs. The oxygenated blood from the lungs returns to the heart, which is pumped again into different parts of the body by the heart. Thus, the blood passes twice through the heart making one complete round through the body. This is called double circulation.
Pulmonary and systemic circulation
The pulmonary circulation pertains to lungs. The blood flows from the right ventricle to the lungs. Pulmonary veins collect oxygenated blood from the lungs and carry it back to the heart (left auricle). The systemic circulation pertains to the major circulation of the body. The aorta receives the blood from the left ventricle and sends it to the various parts of the body. Veins collect the deoxygenated blood from the body parts and pour it back into the right auricle.
see image for diagram
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9)The blood vessels that carry blood away from the heart are called arteries. The ones that carry blood back to the heart are called veins.
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11) see image for diagram
