1. Blood is a specialized bodily fluid that circulates through the arteries and veins, delivering essential nutrients and oxygen to cells and removing waste products.
2. Blood is composed of plasma, red blood cells, white blood cells, and platelets.
3. Plasma is the liquid component of blood, making up about 55% of its volume. It contains water, electrolytes, proteins, hormones, and waste products.
4. Red blood cells, or erythrocytes, are responsible for carrying oxygen from the lungs to the rest of the body and removing carbon dioxide. They make up about 45% of blood volume.
5. White blood cells, or leukocytes, are part of the body's immune system and help fight off infections and diseases. They make up a small percentage of blood volume.
6. Platelets are cell fragments that help with blood clotting and wound healing.
7. Blood is slightly alkaline, with a pH ranging from 7.35 to 7.45.
8. Blood is a connective tissue that is constantly circulating throughout the body, delivering nutrients and oxygen to cells and removing waste products.
9. Blood plays a crucial role in maintaining homeostasis, regulating body temperature, and transporting hormones and other substances throughout the body.
10. Blood is essential for life, and any abnormalities in its composition or function can lead to serious health problems.
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Google Gemini AI
2 hours ago
Physical Characteristics:
- Color: Crimson red (oxygenated) or dark red (deoxygenated) - Viscosity: About 4-5 times greater than water - pH: Slightly alkaline (7.35-7.45) - Temperature: 37-38.3°C (98.6-101°F) - Density: Approximately 1.055 g/mL - Volume: 5-6 liters in adults (about 7-8% of body weight)
Composition:
- Plasma: Liquid component constituting about 55-60% of blood volume - 90% water - 7% proteins (e.g., albumin, globulins, fibrinogen) - 3% electrolytes (e.g., sodium, potassium, chloride) - Hormones, nutrients, waste products - Cellular Components: Constitute about 40-45% of blood volume - Red blood cells (erythrocytes): Oxygen-carrying cells; contain hemoglobin - White blood cells (leukocytes): Immune system cells; fight infection - Platelets (thrombocytes): Involved in blood clotting
Cellular Characteristics:
Red Blood Cells:
- Biconcave disc shape - Nucleated in developing stages, but lose nuclei in mature form - Contain hemoglobin, which binds to oxygen - Average lifespan of 120 days
White Blood Cells:
- Variety of cell types with different immune functions - Neutrophils: Most abundant; phagocytic and destroy bacteria - Eosinophils: Attack parasites and allergens - Basophils: Release histamine, triggering allergic reactions - Lymphocytes: B cells produce antibodies, while T cells regulate immune responses - Monocytes: Differentiate into macrophages, which engulf foreign particles
Platelets:
- Small, irregularly shaped fragments of bone marrow cells - Essential for blood clotting - Adhere to damaged blood vessels and aggregate, forming a clot
Biochemical Characteristics:
- Blood clotting factors: Proteins essential for clot formation - Plasma proteins: Maintain osmotic pressure, transport molecules, and provide immunity - Electrolytes: Maintain electrolyte balance and nerve function - Hormones: Chemical messengers that regulate body functions - Nutrients: Transported to cells for energy and growth - Waste products: Transported to organs for removal