BLOOD Flashcards

1
Q

a transport system that transports nutrients, waste, and hormones

A

Blood

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2
Q

Erythrocytes sink to the bottom, 45% of blood, a percentage known as the

A

Hematocrit

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3
Q

Buffy coat is thick, whitish layer between the erythrocytes and plasma

A

White blood cells and platelets

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4
Q

rises to the top (55% of the blood)

A

Plasma

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5
Q

Color of oxygen-rich blood

A

Scarlet red

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6
Q

Color of oxygen-poor blood

A

Dull red or purple

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7
Q

The metallic and salty taste of blood is because of the presence of

A

Electrolytes

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8
Q

True or false. blood pH is slightly basic

A

False. Blood is slightly alkaline, between 7.35 and 7.45

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9
Q

How many liters of blood are found in a healthy adult?

A

5-6 liters

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10
Q

Blood makes up how much percent of body weight?

A

8%

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11
Q

The extracellular matrix of the blood; 90% water; Straw-colored fluid

A

Blood plasma

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12
Q

an important blood buffer and contributes to osmotic pressure

A

Albumin

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13
Q

clotting proteins; help to stem blood loss when a blood vessel is injured

A

Fibrinogen

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14
Q

help protect the body from pathogens

A

Globulin

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15
Q

3 formed elements from the blood

A

Erythrocytes, leukocytes, and thrombocytes

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16
Q

Main function is to carry oxygen that contains few organelles and lack mitochondria to make room for hemoglobin

A

Erythrocytes

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17
Q

True or false. Erythrocytes are shaped like biconcave discs

A

True

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18
Q

Normal count of RBCs

A

5 million per cubic mm

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19
Q

An erythrocyte can have ___ million hemoglobin molecule

A

250

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20
Q

is a decrease in the oxygen-carrying ability of the blood due to lower-than-normal number of RBCs and abnormal or deficient hemoglobin content in the RBCs

A

Anemia

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21
Q

results from abnormally shaped hemoglobin caused by the change of hemoglobin sequence of amino acids

A

Sickle cell anemia

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22
Q

is a disorder resulting from excessive or abnormal increase of RBCs

A

Polycythemia

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23
Q

Bone marrow cancer

A

Polycythemia Vera

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24
Q

Crucial in body’s defense against disease. Complete cells, with nucleus and organelles

A

Leukocytes

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25
Leukocytes are able to move into and out of blood vessels through the process of
Diapedesis
26
Leukocytes' response to chemical release by damaged tissues
Positive chemotaxis
27
Normal count of WBCs
4,800 to 10,800 per cubic mm
28
Leukocytes move by
Amoeboid motion
29
Granules in their cytoplasm can be stained that possess lobed nuclei. Includes neutrophils, eosinophils, and basophils
Granulocytes
30
Most numerous WBC, function as phagocytes at active sites of infection, and is stained pink
Neutrophils
31
Normal count of neutrophils
3,000 to 7,000 per cubic mm
32
Brick-red cytoplasmic granules that contains antihistamine to kill parasitic worms and play a role in allergy attacks
Eosinophils
33
Normal count of eosinophils
100-400 per cubic mm
34
Large histamine-containing granules that stain dark blue. Contains heparin (anticoagulant) - prevents the clotting mechanism from occurring
Basophils
35
Normal count of basophils
20-50 per cubic mm
36
Lack visible cytoplasmic granules with nuclei that are spherical, oval or kidney-shaped. Include lymphocytes and monocytes
Agranulocytes
37
has large dark purple nucleus and are slightly larger than RBCs. they reside in lymphatic tissues and play a role in immune response
Lymphocytes
38
Normal count of lymphocytes
1,500-3,000 per cubic mm
39
Largest of the white blood cells with a distinctive U or kidney shaped nucleus. They function as macrophages when they migrate into tissues, important in fighting chronic infection.
Monocytes
40
Normal count of monocytes
100-700 per cubic mm
41
Condition where WBC count above 11,000 cells per cubic mm of blood. Generally indicates an infection
Leukocytosis
42
Abnormally low WBC count. Commonly caused by certain drugs, such as corticosteroids ands anticancer agents
Leukopenia
43
Bone marrow becomes cancerous and numerous immature WBC are produced
Leukemia
44
Aka platelets, they are fragments of megakaryocytes (multinucleate cells) that are needed for the clotting process
Thrombocytes
45
Normal count of platelets
300,000 per cubic mm
46
Process of blood cell formation that occurs in red bone marrow
Hematopoiesis
47
Tissue in the bone marrow where blood cells are formed
Myeloid tissue
48
All blood cells are derived from a common stem cell called the
Hemocytoblast
49
produces lymphocytes
Lymphoid stem cells
50
produces all other formed elements other than lymphocytes
Myeloid stem cells
51
RBCs wear out after how many days?
100- 200 days
52
Worn out RBCs are eliminated by
Phagocytes
53
stimulates red bone marrow
Erythropoietin
54
Process of stopping the bleeding that results from a break in a blood vessel
Hemostasis
55
True or false. Blood usually clots within 8-10 minutes
False. Blood usually clots within 3-6 minutes
56
the enzyme that catalyzes joining of fibrinogen molecules in plasma to fibrin
Thrombin
57
forms a mesh that traps red blood cells and platelets, forming the clot
Fibrin
58
A clot in an unbroken blood vessel. Can be deadly in areas such as the lungs
Thrombus
59
A thrombus that breaks away and floats freely in the bloodstream that can later clog vessels in critical areas such as the brain
Embolus
60
Insufficient number of circulating platelets. Arises from any condition that suppresses the bone marrow
Thrombocytopenia
61
Hereditary bleeding disorder where normal clotting factors are missing. Minor tissue damage can cause life-threatening prolonged bleeding
Hemophilia