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What are the main functions of blood in the human body?
What are the main functions of blood in the human body?
The main functions of blood in the human body include delivering necessary substances such as nutrients to the cells, transporting metabolic waste products away from the cells, and contributing to the body's defense against infection and disease.
What is the origin of blood as a fluid connective tissue?
What is the origin of blood as a fluid connective tissue?
Blood is a special type of fluid connective tissue that originates from mesoderm during embryonic development.
What are the unique properties of blood as a fluid connective tissue?
What are the unique properties of blood as a fluid connective tissue?
Blood is a special type of fluid connective tissue that derives from mesoderm. It has a mass of approximately 8.1% of the body mass, is 3-4 times more viscous than water, and has a bright red color when oxygenated and a dull or dark red color in veins. It has a slightly alkaline pH range of 7.35-7.45 and a temperature of approximately 98.6°F (37°C).
What is the approximate viscosity of blood compared to water?
What is the approximate viscosity of blood compared to water?
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What is the pH range of blood in the human body?
What is the pH range of blood in the human body?
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What is the temperature of blood in Fahrenheit?
What is the temperature of blood in Fahrenheit?
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Study Notes
Main Functions of Blood
- Transports oxygen from the lungs to body cells and carbon dioxide from cells to the lungs.
- Delivers nutrients from the digestive tract to cells throughout the body.
- Distributes hormones from endocrine glands to target organs and tissues.
- Maintains body temperature by regulating heat distribution.
- Serves as a reservoir for body fluids and helps in maintaining fluid balance and blood pressure.
- Protects against blood loss through clotting mechanisms and defends against pathogens through immune responses.
Origin of Blood
- Blood is classified as a fluid connective tissue derived from mesenchyme, the embryonic tissue from which all connective tissues originate.
- Hematopoiesis, the formation of blood cells, occurs primarily in the bone marrow throughout life.
Unique Properties of Blood
- Exhibits viscosity, making it thicker than water, contributing to its ability to transport substances effectively.
- Contains cells suspended in plasma, consisting of red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes).
- The presence of proteins, enzymes, and other solutes contributes to the unique composition and functional capabilities of blood.
Viscosity of Blood
- Blood has a viscosity approximately 3 to 4 times greater than that of water, impacting its flow through blood vessels.
pH Range of Blood
- The normal pH range of blood is tightly regulated between 7.35 and 7.45, ensuring proper physiological function.
Temperature of Blood
- The average temperature of human blood is approximately 98.6 degrees Fahrenheit (37 degrees Celsius), aiding in temperature regulation throughout the body.
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Description
Test your knowledge of blood anatomy and functions with this quiz. Learn about the essential role of blood as a body fluid, its composition, and its importance in delivering nutrients and removing waste products from cells.
