Blood Flashcards

1
Q

Blood

A

Only fluid tissue in body

Connective tissue

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2
Q

Components of blood

A

Living cells- formed elements

Nonliving matrix- plasma

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3
Q

Oxygen rich blood

A

Scarlet red

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4
Q

Oxygen poor blood

A

Dull red

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5
Q

pH must be

A

7.35-7.44

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6
Q

Blood temperature

A

100.4°

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7
Q

In a healthy man blood volume is about

A

5-6 liters or about 6 quarts

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8
Q

Blood makes up ___% of body weight

A

8%

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9
Q

Blood plasma

A

90% water
Includes dissolved substances such as: nutrients, salts (electrolytes), respitory gases, hormones, plasma proteins, waste products.

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10
Q

Plasma proteins

A

Made by liver

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11
Q

Plasma proteins: Albumin

A

Regulates osmotic pressure

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12
Q

Plasma proteins: clotting proteins

A

Help to stem blood loss when a blood vessel is injured.

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13
Q

Plasma proteins: antibodies

A

Help protect the body from pathogens

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14
Q

Formed elements

A

Erythrocytes: RBC
leukocytes: WBC
Platelets
Cell fragments

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15
Q

Erythrocytes RBCs

A

Main function: carry oxygen

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16
Q

Erythrocytes RBCs

A
Biconcave disks 
Essentially bags of hemoglobin 
Iron containing protein 
Binds strongly but reversibly to oxygen
Has 4 oxygen binding sites 
Anucleate (no nucleus)
Contains very few organelles
17
Q

Homeostatic imbalances of Red Blood Cells

A

Anemia: decrease in the oxygen carrying ability of the blood

Sickle cell anemia (SCA) results from abnormally shaped hemoglobin

18
Q

Leukocytes or WBC or white blood cells

A

Crucial in bodies defense against disease
Complete cells with a nucleus and organelles
Can respond to chemicals released by damaged tissues

19
Q

Leukemia

A

Abnormal number of leukocytes

Bone marrow becomes cancerous and turns out excess WBC

20
Q

Types of Leukocytes

A

Granulocytes

Agranulocytes

21
Q

Granulocytes

A

Include neutrophils, eosinophils, and basophils

22
Q

Agranulocytes

A

Include lymphocytes and monocytes

23
Q

List WBCs from most to least abundant

Remember the easy way :)

A

1) neutrophils
2) lymphocytes
3) monocytes
4) eosinophils
5) basophils

24
Q

Neutrophils

A

Acts as phagocytes at active sites of infection

25
Eosinophils
Found in responses to allergies and parasitic worms
26
Basophils
Initiate inflammation
27
Lymphocytes
Play an important role in the immune response
28
Monocytes
Largest of the white blood cells Function as macrophages Important in fighting chronic infection
29
Platelets
Derived from ruptured multinucleate cells | Needed for the clotting process
30
Hematopoiesis
Blood cell formation Occurs in red bone marrow All blood cells are derived from a common stem cell (hemocytoblast)
31
Hemostasis
Stoppage of bleeding resulting from a break in a blood vessel
32
Blood usually clots in
3-6 mins
33
Thrombus
A clot in an unbroken blood vessel | Can be deadly in areas like the heart
34
Emblolus
A thrombus that breaks away and floats freely in the blood streak Can later clog vessels in critical areas like the brain.
35
Hemophilia
Hereditary bleeding disorder | Normal clotting factors are missing
36
15-30% of blood causes _______ | Loss of over 30% causes shock which can be ________
Weakness | Fatal
37
Transfusions
The only way to replace blood quickly.
38
Type O blood
Universal donor | Can only receive O blood
39
Type AB blood
Universal recipient