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Question
A blastocyst is a single-layer hollow ball of about 5 million cells encircling a fluid-filled cavity, with a dense mass of cells known as the central cell mass grouped together at one side.a. True
b. False
Answer
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Related questions
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a. TH1
b. TH2
c. TFH
d. CD3+
e. CD4+
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a. two
b. three
c. four
d. five
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a. B-dependent antigens
b. T-dependent antigens
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During the inflammation response, what components of the immune system are sent to the invaded or injured area?
a. eosinophils and basophils
b. monocytes and fatty acids
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a. neutrophils
b. basophils
c. monocytes
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How many types of circulating leukocytes are there?
a. 3
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c. 5
d. 6
e. 7
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What are erythrocytes?
a. plasma proteins
b. cell fragments
c. white blood cells
d. red blood cells
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Q:
Summarize the role of the immune system.
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Which number in the figure representsactivated platelets releasing ADP and thromboxane A2?a. 1b. 2c. 3d. 4e. 5
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Which number in the figure represents newly activated platelets aggregating onto the growing platelet plug?a. 1b. 2c. 3d. 4e. 5
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Because platelets are cell fragments, they lack __________.
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a. True
b. False
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All leukocytes ultimately originate from common precursor undifferentiated pluripotent stem cells in the spleen.
a. True
b. False
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Hemoglobin is found only in leukocytes.
a. True
b. False
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What enzyme dissolves the clot as part of the healing process?
a. thrombin
b. fibrin
c. fibrinogen
d. plasmin
e. plasminogen
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How many steps are involved in the intrinsic pathway to the clotting cascade?
a. four
b. five
c. six
d. seven
e. eight
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What is fibrin's most important property?
a. stretchiness
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A cancerous condition involving uncontrolled proliferation of WBCs is known as:
a. neutrophilia
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Describe short-term and long-term control measures of blood pressure.
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Describe the effect of sympathetic activity on venous return.
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Explain the meaning of flow in terms of the bloodstream.
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Which number in the figure represents the pressures experienced by the arteries?a. 1b. 2c. 3d. 4e. 5