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Questions and Answers
What percentage of blood is composed of plasma?
Which of the following is a function of blood?
What is the main component of blood plasma?
Which blood cells are classified as true cells?
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What percentage of blood is made up of red blood corpuscles (RBCs)?
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Which of the following best describes the shape of large active lymphocytes?
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Study Notes
Blood: Connective Tissue
- Blood is a specialized type of connective tissue (CT) that consists of cells suspended within an extracellular fluid matrix called blood plasma.
- Key functions:
- Transporting oxygen, carbon dioxide, and hormones.
- Removing metabolic waste products.
- Maintaining acid-base balance.
- Defending against infections.
Blood Composition:
- Blood consists of 55% plasma and 45% cells:
- Plasma: Contains water (90%), soluble substances (10%) such as plasma proteins (albumin & globulin), inorganic salts, and organic substances like amino acids, vitamins, hormones, and lipoproteins.
- Cells:
- White blood cells (WBCs or leukocytes) (1%): True cells with a nucleus.
- Red blood corpuscles (RBCs or erythrocytes) (44%): Not true cells, lack a nucleus.
- Platelets or thrombocytes (less than 1%): Not true cells.
B-Large (Active) Lymphocytes
- Size: 10-15 μm in diameter.
- Shape: Rounded.
- Nucleus: Large, less dense chromatin.
- Cytoplasm: Non-granular, abundant and blue.
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Description
This quiz explores blood as a specialized type of connective tissue, detailing its composition and functions. Learn about the components of blood, including plasma and various cells like red blood corpuscles and white blood cells, as well as the critical roles they play in the body.
