A person has 5.6 L of blood. The cells fill 42% of the blood…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A person has of blood. The cells fill of the blood.
- What is the volume of the cells?
- What is the volume of the plasma?
- The person gives of blood to a blood bank. If the blood left has the same cell share, what is the volume of plasma in it?
Need a reminder? The key ideaShow
Connective tissue links and supports other tissues. It has cells, fibres and a matrix. Loose connective tissue includes areolar tissue, which supports the epidermis and has fibroblasts, macrophages and mast cells, and adipose tissue, which stores fat. Dense connective tissue has many fibres. In dense regular tissue the fibres lie in parallel rows, as in tendons, which join muscle to bone, and ligaments, which join bone to bone. In dense irregular tissue the fibres run in different directions, as in the skin. Cartilage has cells in cavities of a solid, pliable matrix. Bone has a hard matrix rich in calcium salts and collagen. Blood is a fluid connective tissue made of plasma, red cells, white cells and platelets.
The worked solution
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Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Blood . Cell share .
Plan. Take the share for the cells. Then the plasma is the rest.
Step 1. Cells. .
Step 2. Plasma. . This is of the blood.
Step 3. After the gift. , so the blood left is . Plasma: .
Answer: ; ; .
Check. , which is the total.
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