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List and describe the functions of blood in the human body.

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1. Transport: blood acquires oxygen in the lungs and distributes it to the tissue cells. It picks up carbon dioxide from the cells and transports it to the lungs. It picks up nutrients from the digestive system and distributes them to the cells. 2. Defense: various blood cell types are capable of defending the body by attacking and destroying invading pathogens. 3. Regulation: blood helps regulate body temperature by picking up heat and transporting it around the body. Plasma contains formed elements that create an osmotic pressure which keeps the liquid content of the blood high.

After hemoglobin binds carbon dioxide, it is known as


A) oxyhemoglobin.
B) beta hemoglobin.
C) carbaminohemoglobin.
D) alpha hemoglobin.
E) deoxyhemoglobin.

F) A) and D)
G) C) and E)

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Both red blood cells and white blood cells


A) are derived from the same original stem cell.
B) have a nucleus.
C) have hemoglobin.
D) have mitochondria and other organelles.
E) can carry carbon dioxide in the blood.

F) A) and E)
G) C) and D)

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In someone with terrible allergies, what leukocyte levels would be elevated?


A) neutrophil, eosinophil
B) monocyte, megakaryocyte
C) eosinophil, basophil
D) lymphocyte, monocyte
E) megakaryocyte, basophil

F) C) and D)
G) A) and B)

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Which body system does not dump some product into the blood?


A) the urinary system
B) the muscular system
C) the digestive system
D) the respiratory system
E) All body systems dump wastes into the blood.

F) C) and D)
G) A) and E)

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The most abundant component of plasma is water.

A) True
B) False

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Which of the following substances is not considered part of blood plasma?


A) dissolved O2
B) glucose
C) urea
D) albumin
E) red blood cells

F) D) and E)
G) A) and B)

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Hormones produced by the endocrine system regulate blood volume and blood cell formation.

A) True
B) False

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True

Mark suffers from nosebleeds and gastrointestinal bleeding due to increased breakdown of platelets outside the marrow. This is called


A) thrombocytopenia.
B) thromboembolism.
C) hemophilia.
D) prothrombin disease.
E) sickle-cell anemia.

F) C) and D)
G) B) and E)

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How does the muscular system benefit the blood?


A) protects the vessels
B) keeps blood moving through the heart and vessels
C) regulates the acid-base balance of the blood
D) maintains blood volume
E) produces the blood cells

F) B) and E)
G) C) and D)

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Which of the following is not a characteristic of infectious mononucleosis?


A) It is caused by an Epstein-Barr virus.
B) Symptoms include fever, sore throat, and swollen lymph glands.
C) There is uncontrolled white blood cell proliferation.
D) Active EBV can be passed in saliva.
E) The virus remains within a person's body for the rest of his or her life.

F) None of the above
G) B) and C)

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Which part of the hemoglobin molecule actually binds the oxygen molecule? Which part binds carbon dioxide?


A) globin chain; globin chain
B) heme; heme
C) globin chain; heme
D) heme; globin chain
E) cell membrane; cell wall

F) A) and E)
G) B) and E)

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List the steps involved in the formation of a blood clot. When a blood vessel is punctured

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1. Platelets will congregate and form a ...

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The final reaction in blood clotting is


A) fibrinogen → fibrin.
B) platelets → prothrombin activator.
C) prothrombin → thrombin.
D) plasmin → fibrin.
E) fibrin → thrombin.

F) D) and E)
G) A) and E)

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Mature human red blood cells


A) have a nucleus.
B) are biconcave discs without a nucleus.
C) are rare in the bloodstream.
D) carry plasma.
E) fight pathogens.

F) C) and D)
G) B) and E)

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Robby has type B positive blood. His blood will contain


A) A and Rh antigens, and anti-B antibodies.
B) A but no Rh antigens, and anti-B antibodies.
C) B but no Rh antigens, and anti-A antibodies.
D) B and Rh antigens, and anti-A antibodies.
E) B and Rh antigens, and no antibodies.

F) A) and C)
G) A) and B)

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Approximately how many oxygen molecules can a single RBC carry?


A) less than 10
B) one hundred
C) one thousand
D) one million
E) one billion

F) A) and B)
G) C) and E)

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The fragmentation of very large megakaryocytes results in the production of


A) leukocytes.
B) erythrocytes.
C) albumins.
D) platelets.
E) globulins.

F) B) and C)
G) All of the above

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Blood plays an important role in homeostasis.

A) True
B) False

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True

Blood clotting requires six clotting factors and calcium ions Ca2+) to ensure that plasma and the formed elements remain in the blood vessels.

A) True
B) False

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