BIOS 255 exam 4 - –Answer 55% plasma, 45% formed elements 2. Co...

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BIOS 255 exam 4

• Whole blood consists of .

–Answer 55% plasma, 45% formed elements

• Components of whole blood surrounded by a plasma membrane are more correctly called

formed elements rather than cells is because .–Answer platelets consist of plasma membrane-enclosed cytoplasm; each never had its own nucleus

• What is the ground substance of blood?

–Answer plasma

• Identify the membrane-bound components of whole blood.

–Answer Erythrocytes, leukocytes, and platelets

• Which component of blood is primarily responsible for its regulatory func- tions?

–Answer plasma

• The formed elements in order from most to least abundant per unit of whole blood are

–Answer erythrocytes, platelets, leukocytes

• The only formed elements that are nucleated when mature are the .-

–Answer leukocytes

• Plasma contains but serum does not.

–Answer clotting factors 1 / 4

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• Identify the types of substances transported by blood.

–Answer Metabolic wastes Hormones Gases Nutrients

• Blood is classified as tissue.

–Answer connective

• What types of regulatory functions are performed by blood?

–Answer Regulation of pH of tissue fluid Regulation of body temperature Regulation of body fluid levels

• of plasma is made of plasma proteins.

–Answer 7%

• The liquid portion of whole blood is called

–Answer plasma

• The category of plasma component LEAST likely, under normal conditions, to be present in

the same amount in interstitial fluid is .–Answer protein

• Albumin constitutes about of all plasma proteins.

–Answer 58%

• By weight, plasma is approximately % protein and 92% water.

–Answer

7 2 / 4

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• Which describes both plasma and interstitial fluid?

–Answer Both are extracellular fluids.

• "The percentage of erythrocytes in whole blood" is the

definition of hematocrit, whereas "the percentage of formed elements in whole blood" is the definition of hematocrit.–Answer clinical, medical dictionary

• Mature erythrocytes lack .

–Answer nucleus

• An average of about of erythrocytes are removed from circulation per

day.–Answer 1%

• In order from most to least abundant, the components of plasma are

.–Answer water, proteins, small solutes and gases

• The formed elements that transport respiratory gases are called .-

–Answer erythrocytes

• Old and/or damaged erythrocytes are removed from circulation as they pass through .

–Answer the liver and spleen

• As they pass through small blood vessels, erythrocytes may pack together, single-file, like a

roll of coins; this formation is called .–Answer 3 / 4

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a rouleau (rouleaux)

• Erythrocytes circulate in the bloodstream for approximately .

–Answer 120 days

• Electrolytes, nutrients, gases and wastes make up of plasma

by weight.–Answer less than 1%

• The cells in the organs that remove old and/or damaged erythrocytes are

–Answer macrophages

• Which of the following poses the greatest risk for severe illness and even death of an

unborn fetus?–Answer Second pregnancy, Rh- mother with second Rh+ fetus

• In which portion of a sample of whole blood will you find the antigens that determine an

individual's ABO blood type?–Answer Erythrocytes

• How do leukocytes and erythrocytes differ?

–Answer Leukocytes defend the body against pathogens, erythrocytes transport respiratory gases.Most leukocytes are in tissue spaces, whereas most erythrocytes are in the blood- stream.Mature leukocytes have a nucleus but mature erythrocytes do not. Some leukocytes have granules in their cytoplasm, erythrocytes do not.

• To test compatibility of blood types between a donor and a recipient, a specific blood test

called a(n) test must be performed.–Answer agglutination

• The process whereby leukocytes are attracted to molecules produced by damaged or dying
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