2.2 Animal tissues, organs and organ systems

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Question 39
Medium

The cellular and sub-cellular components of blood are suspended in a liquid medium as they are transported throughout the human body.

A patient undergoing a routine haematological screening receives the following lab results:

  • Red blood cell count: 4.8×1012 dm−34.8 \times 10^{12} \text{ dm}^{-3}4.8×1012 dm−3 (Normal range: 4.0 to 5.5×1012 dm−34.0 \text{ to } 5.5 \times 10^{12} \text{ dm}^{-3}4.0 to 5.5×1012 dm−3)
  • White blood cell count: 7.2×109 dm−37.2 \times 10^{9} \text{ dm}^{-3}7.2×109 dm−3 (Normal range: 4.0 to 11.0×109 dm−34.0 \text{ to } 11.0 \times 10^{9} \text{ dm}^{-3}4.0 to 11.0×109 dm−3)
  • Platelet count: 75×109 dm−375 \times 10^{9} \text{ dm}^{-3}75×109 dm−3 (Normal range: 150 to 400×109 dm−3150 \text{ to } 400 \times 10^{9} \text{ dm}^{-3}150 to 400×109 dm−3)
a.

Name the liquid component of the blood that transports these cells and other dissolved substances.

[1]
b.

Identify which of the patient's blood components is outside of the normal physiological range.

[1]
c.

Suggest one potential symptom or health risk this patient might experience, and explain how this relates directly to the biological function of the affected component.

[3]

2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
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