D. Differentiate between the following.
1. Artery and vein
2.RBC and WBC
3. Lub and dub sounds of heart
4. Systole and diastole
Answers
Explanation:
Artery and Vein
Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body.
Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.
RBC and WBC
The Red blood cells are also called erythrocytes. RBCs store the haemoglobin, which is a respiratory pigment that binds to oxygen or carbon dioxide molecules.
The white blood cells are also called Leukocytes. These cells act as a defence system against any infections in the human body.
LUB and DUB sounds of heart
Two major sounds heard in the normal heart sound like “lub dub”. The “ lub” is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound,” dub” or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole.
Systole and Diastole
Diastole and systole are two phases of the cardiac cycle. They occur as the heart beats, pumping blood through a system of blood vessels that carry blood to every part of the body. Systole occurs when the heart contracts to pump blood out, and diastole occurs when the heart relaxes after contraction.
Answer:
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Explanation:
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