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Questions and Answers
What is the primary function of blood in relation to respiration?
What is the primary function of blood in relation to respiration?
- O2 and CO2 transport between lungs and tissues (correct)
- Regulation of acid-base balance
- Removal of metabolic products for excretion
- Transport of absorbed nutrients to tissues
Which component makes up the majority of whole blood?
Which component makes up the majority of whole blood?
- Platelets
- Leukocytes
- Plasma (correct)
- Buffy coat
What is a function of plasma proteins in the blood?
What is a function of plasma proteins in the blood?
- Maintain osmotic balance (correct)
- Transport oxygen to tissues
- Regulate body temperature
- Fight infections
Which of the following functions does blood NOT perform?
Which of the following functions does blood NOT perform?
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How does blood contribute to the regulation of body temperature?
How does blood contribute to the regulation of body temperature?
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Study Notes
Basic Functions of Blood
- Transports oxygen (O2) and carbon dioxide (CO2) between the lungs and tissues
- Carries absorbed nutrients from the digestive system to the tissues
- Removes metabolic waste products from the tissues to the kidneys, lungs, skin, and intestines for excretion
- Regulates blood pH (acid-base balance)
- Maintains osmotic balance by regulating the amount of water within the bloodstream, along with the oncotic pressure of plasma proteins
- Helps regulate body temperature using blood-heating and cooling mechanisms
- Defends against infections using leukocytes and antibodies
- Promotes blood coagulation (clotting) using coagulation factors
- Transports hormones and other metabolites
Composition of Whole Blood
- Plasma accounts for 55% of blood. This is the liquid component.
- Buffy Coat comprises leukocytes (white blood cells) and platelets
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