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Biology > Chapter 18 > Flashcards

Chapter 18 Flashcards

1
Q

What is hypoxemia ?

A

An oxygen deficiency in the bloodstream

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2
Q

What is a normal WBC count ?

A

5,000 to 10,000 WBCs/microliter

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3
Q

What’s the leukocyte disorder for a WBC count under 5,000 WBCs/microliter ?

A

Leukopenia

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4
Q

What’s the leukocyte disorder for a WBC count over 10,000 WBCs/microliter ?

A

leukocytosis

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5
Q

Which type of leukemia appears suddenly, progresses rapidly, and causes death within a few months ?

A

Acute leukemia

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6
Q

Which type of leukemia develops slowly and can go undetected for months to years ?

A

Chronic leukemia

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7
Q

What is leukemia ?

A

A cancer of the hematopoietic tissues that usually produces and extraordinarily high number of circulating leukocytes and their precursors

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8
Q

Where do many RBCs die ?
Hint: “the erythrocyte graveyard”

A

The spleen

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9
Q

What two elements are classified as agranulocytes ?

A

Lymphocytes and monocytes

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10
Q

What three elements are classified as granulocytes ?

A

Neutrophils, eosinophils, and basophils

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11
Q

What’s hematology ?

A

The study of blood

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12
Q

What’s viscosity ?

A

Resistance of a fluid to flow

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13
Q

What’s hematopoiesis ?

A

Production of blood cells

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14
Q

What’s the word for the control/cessation of bleeding ?

A

Hemostasis

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15
Q

What’s a normal platelet count ?

A

130,000 to 400,000 platelets/microliter

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16
Q

What are the three stages of hemostasis ?

A

1.Vascular spasm,2.Platelet plug,3.Coagulation

17
Q

What happens during a vascular spasm ?

A

A blood vessel gets damaged so the exposed collagen fibers attract platelets which attract vasoconstrictors such as serotonin & Thromboxane A2

18
Q

What is thrombin ?

A

An enzyme needed to convert fibrinogen to fibrin

19
Q

What’s a hematoma ?

A

A mass of clotted blood in the tissues

20
Q

What’s an embolus ?

A

A moving blood clot that blocks blood vessels elsewhere

21
Q

What’s a pulmonary embolism ?

A

A blood clot that moved to your lung

Biology (22 decks)

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