circulatory system Flashcards Preview

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Flashcards in circulatory system Deck (46):
1

what happens to heart during diastole?

the heart has a brief period of rest

2

what happens to the heart during systole?

Period of contraction of heart where it squeezes out blood

3

whats arrhythmia?

abnormal hearth rhythms

4

how is arrhythmia diagnosed?

cardiac monitors and electrocardiogram

5

arteries?

Muscular elastic blood vessels that carry blood away from the heart

6

whats the most muscular and elastic blood vessel?

arteries

7

whats the conductive pathway for electrical impulse in the heat?

SA node, AV node, bunndle of his, R & L bundle branches, purkinje fibers

8

veins

blood vessels that carry blood back to heart and contain valves to prevent backflow of blood

9

capillaries

vessels that allow oxygen and nutrients to pass through the cell and connect arterioles with venules

10

aorta

largest artery in the body

11

superior and inferior vena cava

two largest veins in body

12

venules

smallest branches of veins in the body

13

arterioles?

smallest branches of arteries in the body

14

what are six substances transported by the blood?

oxygen, carbon dioxide, nutrients, metabolic and waste products, heat

15

six substances that are dissolved or suspended in plasma

blood proteins, nutrients, vitamins, gasses, metabolic waste products and hormones

16

what are the three main blood cells?

erythrocytes, leukocytes, thrombocytes

17

function of erythrocytes?

carry oxygen from lungs to the body and brings carbon dioxide from body to lungs

18

function of leukocytes?

protects body from infectious disease and foreign invaders

19

function of thrombocytes?

stops bleeding by clumping and clotting blood vessel injuries

20

what gives blood its characteristic of red color ?

hemoglobin

21

whats hemoglobin? function?

- complex protein composed of protein molecule called globin
- transports o2 and co2 threw the body

22

whats neutrophils and monocytes?

phagocytize bacteria

23

what do lymphocytes do?

provide immunity for the body by developing antibodies

24

what do eosinophils do?

defend the body from allergic reactions

25

what do basophils do?

produce histamine and heparin

26

aneurysm disease?

saclike formation in the wall of an artery

27

anemia disease?

inadequate number of red blood cells, hemoglobin, or both

28

varicose veins disease?

dilated swollen veins

29

artherosclerosis disease?

a fatty deposit on the wall of arteries

30

hemophilia disease?

disease characterized by failure of blood to clot

31

hypertension disease?

high blood pressure

32

thrombophlebitis disease?

inflammation of the veins with formation of a clot

33

myocardial infarction disease?

blockage in the coronary arteries of the heart

34

embolus disease?

foreign substance circulating in the blood stream

35

leukemia disease?

malignant disease with large numbers of immature white blood cells

36

aortic valve ?

valve between the left ventricle and aorta

37

myocardium?

muscular middle layer of the heart

38

pericardium ?

double- layer membrane on outside of heart

39

whats the septum?

the muscular wall that separates the heart into a right and left side

40

right and left ventricles?

lower chamber of the heart

41

right and left atria?

upper chamber of heart

42

fluid portion of blood?

plasma

43

pulmonary valve?

valve between the right ventricle and right pulmonary artery?

44

endocardium?

smooth layer of cell lining the inside of the heart

45

whats tissue that flows through the circulatory system?

blood

46

what's the period of ventricular contraction in the heart?

systole