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Questions and Answers
What is the typical pH range of blood?
What is the typical pH range of blood?
- 7.00 to 7.30
- 7.35 to 7.45 (correct)
- 7.50 to 8.00
- 6.80 to 7.20
Blood is less viscous than water.
Blood is less viscous than water.
False (B)
What is the composition of whole blood?
What is the composition of whole blood?
Cells, cell fragments, and blood plasma
The total blood volume in an adult of 70kg is about ______.
The total blood volume in an adult of 70kg is about ______.
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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How much blood does an average adult female weighing 70 kg have?
How much blood does an average adult female weighing 70 kg have?
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Blood clots on standing, leaving behind plasma.
Blood clots on standing, leaving behind plasma.
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What are the formed elements of blood?
What are the formed elements of blood?
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Blood can be sampled using a ______ for tests such as blood pH.
Blood can be sampled using a ______ for tests such as blood pH.
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Study Notes
Blood: An Overview
- Blood is a fluid connective tissue circulating within the cardiovascular system's blood vessels.
- It comprises formed elements (cells and cell fragments) suspended in blood plasma (extracellular fluid).
Blood: Physical Properties and pH
- Blood is denser and more viscous than water, possessing a sticky consistency.
- Its pH is slightly alkaline, maintaining a narrow range between 7.35 and 7.45.
- Blood clots spontaneously upon standing, leaving serum behind.
- An average adult (70kg) has approximately 5.5 liters of blood, about 8% of their body weight (males: 5-6L, females: 4-5L).
Blood Sample Acquisition
- Arterial blood, necessary for specific tests like blood pH measurement, is obtained by puncturing an artery using a needle and syringe. This is not a standard procedure.
- Cardiac catheterization allows blood sampling from heart chambers for specialized testing via a cardiac catheter.
Homework Assignment
- Identify and describe the various blood collection tubes and their respective applications.
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