info on heart and circulation unit 2 Flashcards Preview

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Flashcards in info on heart and circulation unit 2 Deck (40):
1

Blood is a type of _____________ tissue

Connective

2

Blood is made up of what

1. Plasma 55%
2. Cells @ Cell Fragments 45%

3

Plasma is __________ part of blood

Liquid
(and 91% water)

4

______________responsible for formation of blood clots

Fibrinogen

5

Serum is plasma without the ________factors

Clotting

6

Do RBCs and platelets have a nuclei

No

7

Process of blood cell production

Hematopoiesis

8

RBCs are about 700 times more numerous than__________________

WBCs

9

_______cannot move on their own. Moved by forces that cause blood to circulate

Red Blood Cells

10

Main component of red blood cells

Hemoglobin

11

Pigmented protein that accounts for the blood's color

Hemoglobin

12

Primary function of Red Blood Cells

To transport oxygen from lungs to various body tissues AND to transport carbon dioxide from tissue to lungs

13

Iron is necessary for the normal function of __________

Hemoglobin

14

What stimulates red blood cell production

Low Oxygen Levels

15

_____________stimulates red bone marrow to produce more red blood cells

Erythropoietin

16

WBCs lack ______________

Hemoglobin

17

___________are WBCs with large cytoplasmic granules and a lobed nuclei

Granulocytes

18

Facts about WBCs:

1. Protect body against invading microorganisms
2. Remove dead cells @ debris from the body
3. The are motile (they can move)

19

5 Types of WBCs:

1. Neutrophils
2. Eosinophils
3. Basophils
4. Lymphocytes
5. Monocytes

20

1. Usually first to respond to infection
2. Destroy certain bacteria

Neutrophils

21

Most common in blood of people with allergic reactions

Eosinophils

22

1. Increase in number in both allergic @ inflammatory reactions
2. Contain large amounts of Heparin(inhibits blood clotting)

Basophils

23

1. Important role-Immunity
2. Form cells that produce proteins called Antibodies

Lymphocytes

24

1. Largest of WBCs
2. Transform into macrophages
3. Associated with chronic infection
4. They phagocytize bacteria

Monocytes

25

__________ cells fght infection

White Blood

26

________cells transport oxygen throughout body

Red Blood

27

Platelets also called_____________

Thrombocytes

28

Facts about platelets (thrombocytes):

1. Play important role in controlling blood loss
3. Produced in red marrow @ derived from Megakaryocytes
4. Form platelet plugs
5. Promote the formation and contraction of clots that help seal larger wounds in vessels

29

Series of events that help stop excessive blood loss:

1. Vascular spasms
2. Platelet plug formation
3. coagulation

CAN LEAD TO HEMOSTASIS

30

A blood clot is :

A network of threadlike protein fibers called FIBRIN

31

Clot formation requires what vitamin

Vitamin K

32

Prevents Clotting

Anticoagulents

33

Only vessels that provide direct access to nearly every cell in the the body

Capillaries

34

Thick walled, 3 Layers, elastic vessels for high pressure blood

Arteries

35

Resistance vessels, less elastic, more muscular, large changes in diameter

Arterioles

36

Thinnest walled, smallest diameter vessels for exchange

Capillaries

37

Drain capillaries, has endothelium and some vascular smooth muscle, participate in exchange

Venules

38

Thinner walled, 3 layers, large diameter vessels for returning low pressure blood back to heart

Veins

39

The wall of heart are made up of 3 Layers

The outer + inner layers made of Epithelial Tissue
Middle Layer made of Cardiac Muscle

40

Facts about Heart

The heart is basically 2 pumps sitting side by side.
If functions as 2 pumps inside one.
Right side-pumps deoxgenated blood from body to lungs.
Left Side-pumps oxygenated blood from lungs to rest of body.
It also carries electrical signals instructing the ventricles when to contract.