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Questions and Answers
What is the primary function of blood in respiration?
What is the primary function of blood in respiration?
- O2 and CO2 transport between lungs and other tissues (correct)
- Regulation of core temperature
- Transport of absorbed nutrients to tissues
- Defense against infections
Which component makes up the largest percentage of whole blood?
Which component makes up the largest percentage of whole blood?
- Buffy coat
- Red blood cells
- Plasma (correct)
- Platelets
Which function is NOT performed by blood in relation to metabolic waste?
Which function is NOT performed by blood in relation to metabolic waste?
- Removal of metabolic products
- Excretion of metabolic waste
- Transport of absorbed nutrients
- Regulation of acid-base balance (correct)
What is the role of leukocytes in blood?
What is the role of leukocytes in blood?
Which of the following describes the composition of blood plasma?
Which of the following describes the composition of blood plasma?
What is one function of plasma proteins in blood?
What is one function of plasma proteins in blood?
How do blood platelets contribute to the body's functions?
How do blood platelets contribute to the body's functions?
What happens to the blood when it is cooled during temperature regulation?
What happens to the blood when it is cooled during temperature regulation?
Which of the following is NOT a function of blood?
Which of the following is NOT a function of blood?
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Study Notes
Basic Functions of Blood
- Respiration: Transports oxygen and carbon dioxide between the lungs and other tissues.
- Alimentation: Transports absorbed nutrients to all tissues
- Removal of Waste: Removes metabolic products to the kidneys, lungs, skin, and intestines for excretion.
- Buffering: Regulates the acid-base (pH) balance of the body.
- Osmotic Balance: Maintains the osmolality of the plasma.
- Body Temperature: Regulates core body temperature through blood-heating and cooling.
- Immunologic: Essential for defense against infections through leukocytes (white blood cells) and antibodies.
- Coagulation: Protects against traumatic bleeding using clotting factors.
- Transport: Carries hormones and other metabolites throughout the body.
Composition of Whole Blood
- Plasma (55%): The liquid medium of blood.
- Buffy Coat: Contains leukocytes (white blood cells) and platelets.
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