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Questions and Answers
Which of the following components of blood is responsible for defending against disease?
Which of the following components of blood is responsible for defending against disease?
- Erythrocytes
- Thrombocytes
- Plasma
- Leukocytes (correct)
What is the primary function of thrombocytes in the blood?
What is the primary function of thrombocytes in the blood?
- Regulating fluid and electrolyte balance
- Defending the body against infection
- Aiding in blood clot formation (correct)
- Transporting oxygen to tissues
Mature erythrocytes lack which of the following?
Mature erythrocytes lack which of the following?
- Hemoglobin
- The ability to transport oxygen
- Biconcave discs
- Nuclei and organelles (correct)
Plasma, which constitutes 55% of blood volume, primarily consists of what?
Plasma, which constitutes 55% of blood volume, primarily consists of what?
Which of the following blood components are not considered true cells, but rather cell fragments?
Which of the following blood components are not considered true cells, but rather cell fragments?
What is the approximate lifespan of erythrocytes?
What is the approximate lifespan of erythrocytes?
Which of the following best describes the hematocrit?
Which of the following best describes the hematocrit?
Which function is primarily associated with plasma?
Which function is primarily associated with plasma?
In which location are erythrocytes produced?
In which location are erythrocytes produced?
Leukocytes are categorized into which two main groups?
Leukocytes are categorized into which two main groups?
Flashcards
Plasma
Plasma
Non-cellular liquid matrix; 55% of blood volume; Transports molecules; Regulates fluid/electrolyte balance; Maintains pH
Erythrocytes
Erythrocytes
Red blood cells; 45% of blood volume; Hematocrit (higher in males); Mature RBCs lack nuclei; Biconcave discs; Transports oxygen. Life span: 120 days
Leukocytes
Leukocytes
White blood cells; <1% of blood volume; True cells; Lifespan: 1-3 days; Defend against disease; Granulocytes and Agranulocytes are categories.
Thrombocytes
Thrombocytes
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Hematocrit
Hematocrit
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Erythropoiesis
Erythropoiesis
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Study Notes
- Study notes on the components of blood
Plasma
- Non-cellular liquid matrix
- 55% of blood volume
- Functions to transport molecules
- Regulates fluid and electrolyte balance
- Maintains pH
- Plasma is 90% water
- 10% solutes including gases, nutrients, proteins, electrolytes, and hormones
Erythrocytes
- Red blood cells
- 45% of blood volume
- Hematocrit is the percentage of blood made up by erythrocytes
- Higher hematocrit in males
- Mature red blood cells lack nuclei and organelles, and are not true cells
- Biconcave discs
- Functions to transport oxygen
- Each red blood cell contains 250 million hemoglobin molecules
- Produced by erythropoiesis in the red bone marrow
- Erythrocytes have a lifespan of 120 days
Thrombocytes
- Platelets
- Less than 1% of blood volume
- Not true cells, only cell fragments
- Functions to help clot damaged blood vessels, called hemostasis
Leukocytes
- White blood cells
- Less than 1% of blood volume
- True cells
- Have a lifespan of 1-3 days
- Function to defend against disease
- Two categories include granulocytes and agranulocytes
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