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Questions and Answers
What is the main function of blood in the human body?
What is the main function of blood in the human body?
- To produce hormones
- To transport nutrients and oxygen (correct)
- To provide insulation
- To store energy
Blood is classified as a type of connective tissue.
Blood is classified as a type of connective tissue.
True (A)
What are the two main components of blood?
What are the two main components of blood?
Plasma and blood cells
Blood is continuously pumped by the _____ to transport through the body.
Blood is continuously pumped by the _____ to transport through the body.
Match the components of blood with their descriptions:
Match the components of blood with their descriptions:
What percentage of plasma is made up of water?
What percentage of plasma is made up of water?
The flow of blood can be stopped without any immediate consequences.
The flow of blood can be stopped without any immediate consequences.
What is the primary function of albumin in the blood?
What is the primary function of albumin in the blood?
What happens to blood when it travels to the lungs?
What happens to blood when it travels to the lungs?
Erythrocytes are produced at a rate of four to five billion cells per minute.
Erythrocytes are produced at a rate of four to five billion cells per minute.
What percentage of blood volume do leucocytes constitute?
What percentage of blood volume do leucocytes constitute?
The spleen is often referred to as the __________ of RBCs.
The spleen is often referred to as the __________ of RBCs.
Match the type of blood cell with its function:
Match the type of blood cell with its function:
Which type of blood cell is responsible for controlling bleeding?
Which type of blood cell is responsible for controlling bleeding?
Erythrocytes contain a nucleus.
Erythrocytes contain a nucleus.
List the two main types of WBCs.
List the two main types of WBCs.
Flashcards
What is blood?
What is blood?
Blood is a special fluid connective tissue that acts as a transport liquid, carrying essential substances and removing waste products.
Why is blood essential?
Why is blood essential?
Blood is vital for the survival of cells. It transports oxygen, nutrients, and hormones, and removes waste products. Without blood flow, cells would die.
What are the main components of blood?
What are the main components of blood?
Blood consists of plasma, a fluid matrix, and blood cells.
What is plasma?
What is plasma?
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What is blood circulation?
What is blood circulation?
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How does blood transport oxygen?
How does blood transport oxygen?
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How does blood transport nutrients?
How does blood transport nutrients?
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How does blood remove waste products?
How does blood remove waste products?
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What is albumin?
What is albumin?
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What are red blood cells (RBCs)?
What are red blood cells (RBCs)?
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Where are RBCs made?
Where are RBCs made?
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What is the lifespan of an RBC?
What is the lifespan of an RBC?
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What are white blood cells (WBCs)?
What are white blood cells (WBCs)?
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What are platelets?
What are platelets?
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What is the role of the spleen?
What is the role of the spleen?
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Study Notes
Blood: The Lifeline
- Blood is a fluid connective tissue, a transport liquid pumped by the heart throughout the body.
- Constant blood flow is vital; cessation can lead to death within minutes.
- Blood's composition is crucial for maintaining bodily functions.
Blood Composition
- Plasma: A yellowish liquid matrix (55% of blood volume).
- Primarily water (90%).
- Contains proteins (6%), including albumin for osmotic pressure regulation.
- Also dissolved minerals, glucose, hormones, and carbon dioxide.
- Blood Cells: (45% of blood volume).
- Erythrocytes (RBCs):
- Round, biconcave, and red, due to haemoglobin (iron-containing protein).
- Transport oxygen.
- Produced in bone marrow at 4-5 billion per hour.
- Destroyed in the spleen (the graveyard of RBCs).
- 120-day lifespan.
- 4-6 million per cubic millimetre.
- Leucocytes (WBCs):
- Colourless, nucleated cells (1% of blood volume).
- Crucial for fighting disease and attacking foreign bodies.
- Two main types: granulocytes (e.g., neutrophils, eosinophils) and agranulocytes (e.g., lymphocytes, monocytes).
- Thrombocytes (Platelets):
- Cell fragments for blood clotting.
- Erythrocytes (RBCs):
Blood Circulation and Function
- Blood composition varies based on organ interactions.
- Oxygen exchange occurs in lungs.
- Nutrient absorption in intestines is transported.
- Waste removal to eliminating organs.
- Hormones carried to target organs.
- Old RBC breakdown iron is recycled for new cell production.
- Mechanisms ensure proper blood component concentration.
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Description
Explore the vital aspects of blood as a connective tissue. This quiz covers blood's composition, including plasma, red blood cells, and white blood cells, as well as their essential functions in the human body. Understanding these components is crucial for maintaining health and homeostasis.
