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Questions and Answers
What is the main function of erythrocytes in the blood?
Which type of leukocytes are granulocytes?
What is the main function of basophils among the granulocytes?
Which formed element in blood is responsible for clotting?
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What is the main function of lymphocytes among the agranulocytes?
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What is the main function of platelets in the blood?
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Why is fibrinogen important in the blood plasma?
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Which statement correctly describes the difference between lymph and blood?
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Why is blood considered a connective tissue?
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What is the significance of double circulation in the circulatory system?
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Study Notes
Blood Components and Functions
- Erythrocytes (Red Blood Cells): most abundant cells, contain haemoglobin, carry oxygen to all parts of the body, produced in bone marrow, 4-6 million RBCs per cubic millimeter of blood.
- Leukocytes (White Blood Cells):
- Granulocytes:
- Neutrophils: phagocytic cells, protect against infecting agents
- Eosinophils: associated with allergic reactions
- Basophiles: involved in inflammatory responses
- Agranulocytes:
- Lymphocytes: generate immune responses against infecting agents
- Monocytes: phagocytic in nature
- Granulocytes:
- Platelets: small irregular bodies, promote clotting, contain essential chemicals that help in clotting
Plasma and Plasma Proteins
- Plasma: colorless fluid, transports food, CO2, waste products, and salts, constitutes 55% of blood
- Plasma proteins: 6.8% of plasma, consist of fibrinogens, globulins, and albumins
- Fibrinogen: synthesised by the liver, plays a role in blood clotting
- Globulin: major protein, protects the body against infecting agents
- Albumin: major protein, helps in maintaining fluid volume within the vascular space
Miscellaneous
- Blood as a Connective Tissue: considered a type of connective tissue due to its mesodermal origin and ability to connect body systems
- Lymph vs. Blood:
- Lymph: colorless fluid, lacks RBCs, contains plasma and fewer WBCs and platelets, helps in body defense, part of the immune system
- Blood: red-colored fluid, contains RBCs, associated with circulation of oxygen and carbon dioxide
- Double Circulation: process where blood passes twice through the heart during one complete cycle, found in amphibians, reptiles, birds, and mammals, more prominent in birds and mammals
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Description
Test your knowledge on the components of formed elements in blood and their major functions. Questions cover topics such as erythrocytes, their abundance, red pigment haemoglobin, and the function of carrying oxygen throughout the body.
