(a) Mention any two components of blood.
(b) Trace the movement of oxygenated blood in the body.
(c) Write the function of valves present in between atria and ventricles.
(d) Write one structural difference between the composition of artery and vei
OR
(a)
Define excretion.
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Answer :
1 - Red Blood Cells ( RBC ), White Blood Cells ( WBC ).
2 - The Oxygenated blood leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. This blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle.
3 - The 'main function' of the valves present between the atria and the ventricles is to prevent the 'back flow of blood' from one 'chamber of the heart' to the other.
4 - Arteries have very thick walls to withstand very high pressure as oxygenated has more pressure than deoxygenated ones. Meanwhile, veins have thin walls.
Veins have valves present inside them to prevent the back flow of the bloods and arteries do not have one.
OR
5 - Excretion is the process by which an organism eliminates the waste products produced as a result of the metabolic processes of the body.
Answer:
Explanation:
1 - Red Blood Cells ( RBC ), White Blood Cells ( WBC ).
2 - The Oxygenated blood leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. This blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle.
3 - The 'main function' of the valves present between the atria and the ventricles is to prevent the 'back flow of blood' from one 'chamber of the heart' to the other.
4 - Arteries have very thick walls to withstand very high pressure as oxygenated has more pressure than deoxygenated ones. Meanwhile, veins have thin walls.
Veins have valves present inside them to prevent the back flow of the bloods and arteries do not have one.
OR
5 - Excretion is the process by which an organism eliminates the waste products produced as a result of the metabolic processes of the body.