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ASU BIO 202 Exam 1; Questions & Answers 100% Verified $13.99   Add to cart

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ASU BIO 202 Exam 1; Questions & Answers 100% Verified

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  • Arizona State University BIO 202
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  • Arizona State University BIO 202

ASU BIO 202 Exam 1; Questions & Answers 100% Verified Chapter 18 Blood Describe the functions and properties of blood Answer-Transports : O2 from lungs to organs/cells CO2 from cells to lungs Nutrients from digestive system & storage Wastes to liver & kidneys Hormones Regulates body temp...

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  • August 8, 2024
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  • Questions & answers
  • Arizona State University BIO 202
  • Arizona State University BIO 202
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ASU BIO 202 Exam 1; Questions & Answers
100% Verified
Chapter 18 Blood

Describe the functions and properties of blood Answer-Transports :

O2 from lungs to organs/cells

CO2 from cells to lungs

Nutrients from digestive system & storage

Wastes to liver & kidneys

Hormones




Regulates body temperature (transports heat out to skin)




Immunity (white blood cells)



Clotting (platelets)



Stabilizes water balance



Stabilizes pH - buffer for acids & bases




Explain why blood is a connective tissue Answer-more matrix vs cells

, ASU BIO 202 Exam 1; Questions & Answers
100% Verified

Adults have ____ L of blood Answer-4-6 L of blood average about 5




List the components of blood and their average amounts Answer-plasma, a clear
extracellular fluid (55% of blood



Formed elements - blood cells and platelets

Mean erythrocyte (RBCs) count - 4.2-6.2 million/ml

Mean leukocyte (WBCs) count - 5,000-10,000/ml

Mean platelet count - 130,000-400,000/ml




List the major types of WBCs Answer-Granulocytes - have cytoplasmic granules

Neutrophils

Eosinophils

Basophils

Agranulocytes - no cytoplasmic granules

Lymphocytes (T-cells & B-cells)

Monocytes & Macrophages




Explain hematocrit and list average percentages Answer-Hematocrit is % of total volume
that is actual cells

, ASU BIO 202 Exam 1; Questions & Answers
100% Verified


Erythrocytes are heaviest and settle first

-37% to 52% total volume

White blood cells & platelets

-1% total volume

Buffy coat

-leukocytes and platelets

Plasma

-47% to 63%




Explain the significance of blood viscosity and osmolarity, and how changes in viscosity and
osmolarity affect the body. Answer-Viscosity - resistance to flow (thickness/stickyness)

-Too many or too few red blood cells changes the viscosity of blood and puts a strain on the
heart




Osmolarity - total molar concentration of dissolved particles in 1 L of solution due to transfer of
nutrients and wastes between the blood & tissue fluids

-If too high: bloodstream absorbs too much fluid from the tissues, thus causing hypertension
(high BP)

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