Podcast
Questions and Answers
Why does the speaker of the passage dislike getting their blood drawn?
Why does the speaker of the passage dislike getting their blood drawn?
- Because they are afraid of needles (correct)
- Because they are afraid of the lab machine
- Because they are afraid of the doctor
- Because they are afraid of the lab results
What happens to the blood immediately after it is drawn?
What happens to the blood immediately after it is drawn?
- It is put into a tube (correct)
- It is sent directly to the lab
- It is stored in a special container
- It is examined by the doctor
What is special about the tube that the blood is put into?
What is special about the tube that the blood is put into?
- It is a specific size
- It is a specific color
- It has a chemical that prevents the blood from clotting (correct)
- It is made of a special material
Why is it important that the blood does not clot?
Why is it important that the blood does not clot?
What happens to the tubes of blood in the lab?
What happens to the tubes of blood in the lab?
What is the purpose of the machine in the lab?
What is the purpose of the machine in the lab?
Why do people sometimes gently shake the tube of blood?
Why do people sometimes gently shake the tube of blood?
What happens to the tubes while they are being spun by the machine?
What happens to the tubes while they are being spun by the machine?
What is the force created when tubes spin during centrifugation?
What is the force created when tubes spin during centrifugation?
What is the percentage of total volume of blood that is made up of plasma?
What is the percentage of total volume of blood that is made up of plasma?
What is the main component of plasma?
What is the main component of plasma?
What is the function of albumin in plasma?
What is the function of albumin in plasma?
What is the name of the layer below plasma in a centrifuged blood sample?
What is the name of the layer below plasma in a centrifuged blood sample?
What is the percentage of plasma made up of protein?
What is the percentage of plasma made up of protein?
What is the function of fibrinogen in plasma?
What is the function of fibrinogen in plasma?
What is the function of antibodies in plasma?
What is the function of antibodies in plasma?
What is the term for the machine used in centrifugation?
What is the term for the machine used in centrifugation?
What is the percentage of total blood volume made up of white blood cells and platelets?
What is the percentage of total blood volume made up of white blood cells and platelets?
What is the percentage of red blood cells in the blood according to the diagram?
What is the percentage of red blood cells in the blood according to the diagram?
What is the main difference between plasma and serum?
What is the main difference between plasma and serum?
What is the term for the percentage of blood volume taken up by red blood cells?
What is the term for the percentage of blood volume taken up by red blood cells?
Why would someone living at the top of a mountain have a different hematocrit than someone living at sea level?
Why would someone living at the top of a mountain have a different hematocrit than someone living at sea level?
What is the term for having a high volume of red blood cells in the blood?
What is the term for having a high volume of red blood cells in the blood?
What is the function of red blood cells in the blood?
What is the function of red blood cells in the blood?
What is the approximate percentage of platelets in the blood?
What is the approximate percentage of platelets in the blood?
What is the difference between the second and third person's blood samples in the diagram?
What is the difference between the second and third person's blood samples in the diagram?
What is the protein found in red blood cells that carries oxygen?
What is the protein found in red blood cells that carries oxygen?
What can be concluded about the third person's blood sample in the diagram?
What can be concluded about the third person's blood sample in the diagram?
Flashcards are hidden until you start studying
Study Notes
Blood Drawing and Testing
- Blood is drawn into a special tube that contains a chemical to prevent clotting, ensuring easy lab work.
- The tube is gently shaken to ensure good mixing and prevent clotting.
Centrifugation Process
- The blood is then taken to the lab and put into a machine called a centrifuge.
- The centrifuge spins the blood at high speed, creating a centrifugal force that separates the blood into different layers.
- The heavy parts of the blood move to the tip of the tube, while the less dense parts rise to the top.
Layers of Blood
- Plasma: The top layer, making up about 55% of the blood, is the least dense and contains mostly water (90%) and proteins (8%), such as albumin, antibodies, and fibrinogen.
- White Blood Cells and Platelets: The second layer contains white blood cells and platelets, making up less than 1% of the blood.
- Red Blood Cells: The bottom layer, making up about 45% of the blood, contains red blood cells, which carry oxygen and have hemoglobin.
Serum vs. Plasma
- Serum is similar to plasma, but it does not contain fibrinogen and clotting factors.
Hematocrit
- Hematocrit is the percentage of the total blood volume taken up by red blood cells.
- It is an important measurement that can vary depending on factors such as age, gender, and altitude.
Examples of Hematocrit
- A person with a high hematocrit (e.g., 60%) has polycythemia, meaning they have a high volume of red blood cells.
- A person with a low hematocrit (e.g., 30%) has anemia, meaning they have a low volume of red blood cells.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
