To solve this worksheet, we need to identify the four main parts of blood shown in the test tube after it has been spun (centrifuged). When blood is separated, it splits into layers based on weight.
Here is the step-by-step breakdown from the top of the tube to the bottom:
1. The Top Yellow Layer
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Component: This liquid part is called
Plasma. It makes up about 55% of your blood volume.
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Function: Plasma is mostly water. Its job is to carry nutrients (like sugar and vitamins), hormones, and waste products throughout the body. It also contains proteins that help blood clot.
2. The Thin White/Gray Middle Layer
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Component: This thin layer is called the
Buffy Coat. It contains
White Blood Cells and
Platelets.
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Function:
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White Blood Cells: These are the body's soldiers. They fight off infections and diseases.
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Platelets: These are tiny cell fragments that help stop bleeding by forming clots when you get a cut.
3. The Bottom Red Layer
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Component: This heavy layer consists of
Red Blood Cells. They make up about 45% of your blood.
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Function: Their main job is to carry oxygen from the lungs to the rest of the body and bring carbon dioxide back to the lungs to be breathed out. They contain hemoglobin, which gives blood its red color.
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Final Answer:
Here is how you should fill in the boxes, matching the lines from the test tube to the labels:
Top Line (Yellow Liquid):
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Blood Component: Plasma
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Function: Carries nutrients, hormones, and waste products; helps with clotting.
Middle Lines (Thin White Layer):
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Blood Component: White Blood Cells
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Function: Fights infections and diseases.
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Blood Component: Platelets
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Function: Helps blood clot to stop bleeding.
Bottom Line (Red Layer):
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Blood Component: Red Blood Cells
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Function: Carries oxygen to the body and removes carbon dioxide.
Parent Tip: Review the logic above to help your child master the concept of the blood worksheet.
