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Basic Functions and Composition of Blood

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Basic Functions and Composition of Blood

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Questions and Answers

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?

Buffy coat

Red blood cells

Plasma (correct)

Platelets

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?

Defense against infections Signup and view all the answers

Which of the following describes the composition of blood plasma?

It serves as the liquid medium constituting about 55% of whole blood. Signup and view all the answers

What is one function of plasma proteins in blood?

Maintaining osmotic balance Signup and view all the answers

How do blood platelets contribute to the body's functions?

By protecting against traumatic bleeding Signup and view all the answers

What happens to the blood when it is cooled during temperature regulation?

It helps in body temperature regulation. Signup and view all the answers

Which of the following is NOT a function of blood?

Regulation of sleep cycles Signup and view all the answers

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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Description

Explore the essential functions of blood, including respiration, nutrient transport, and waste removal, as well as its composition of plasma and cellular components. This quiz covers key aspects of blood's roles in maintaining homeostasis and supporting the immune system.