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Questions and Answers
What is the primary function of red blood cells (RBCs)?
What is the primary function of red blood cells (RBCs)?
- To transport nutrients
- To fight infection
- To assist in blood clotting
- To carry oxygen (correct)
The process of forming new red blood cells is called _____
The process of forming new red blood cells is called _____
erythropoiesis
What are the three main types of blood cells?
What are the three main types of blood cells?
White blood cells, red blood cells, platelets
Plasma is primarily composed of water.
Plasma is primarily composed of water.
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Match the following terms with their definitions:
Match the following terms with their definitions:
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Study Notes
Blood Definition, Composition & Functions
- Blood is a fluid connective tissue responsible for transporting substances throughout the body.
- Components:
- Formed elements: Red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes).
- Plasma: Liquid portion containing water, electrolytes, proteins, and other dissolved substances.
Blood Cells
- Red Blood Cells (RBCs):
- Contain hemoglobin, a protein that binds oxygen for transport.
- Lack a nucleus, facilitating oxygen binding capacity.
- Biconcave shape maximizes surface area for gas exchange.
- White Blood Cells (WBCs):
- Immune system components, defending the body against infection and disease.
- Multiple types with various functions.
- Platelets:
- Fragments of megakaryocytes, essential for blood clotting and wound repair.
Plasma
- Composed primarily of water (90%).
- Contains dissolved substances:
- Plasma Proteins: Albumin (maintains osmotic pressure), globulins (immune function), fibrinogen (blood clotting).
- Electrolytes: Maintain osmotic balance and nerve function.
- Nutrients: Glucose, amino acids, fatty acids.
- Waste Products: Urea, creatinine.
- Gases: Oxygen, carbon dioxide.
Blood Formation
- Hematopoiesis: Process of blood cell production occurring in red bone marrow.
- Erythropoiesis: Formation of RBCs.
- Leukopoiesis: Formation of WBCs.
- Thrombopoiesis: Formation of platelets.
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Description
Test your knowledge on the definition, composition, and essential functions of blood. Explore its components, from red blood cells to plasma, and understand their roles in the body. Perfect for students studying biology or health sciences.
