3. Cardiovasculsr System Chp 15 (exam 1) Flashcards Preview

Bio 110 > 3. Cardiovasculsr System Chp 15 (exam 1) > Flashcards

Flashcards in 3. Cardiovasculsr System Chp 15 (exam 1) Deck (64):
0

Functions of cardio. System

Transport of food, gases, wastes, hormones, etc
Combat infection
Body temp homeostasis
Maintains acid-base, fluid electrolyte balance in the body

1

Components of the cardio. System

1)heart
2)blood vessels
3)blood

2

Covers of the heart

Pericardium
1.) Outer Fibrous
2.) Inner serous

3

Inner serous has 3 layers within

parietal pericardium
pericardial cavity with serous fluid
Visceral pericardium

4

Pericarditis

inflammation of pericardium membrane

5

Atria (atrium)

2 in the upper area it will receive the blood, has a thin wall

6

Ventricles

2 in the lower, Pumps blood, has a thick wall

7

Chordae tendineae

Fibrous strings that prevent valve cusps from prolapsed;attach to the papillary muscles

8

Pulmonary valves

Between right ventricle and pulmonary artery

9

Aortic Valve

Between the left ventricle and aorta

10

Murmur

abnormal heart valve sounds

11

Which ventricle is the strongest?

The left ventricle

12

Systole

ventricular contractions

13

diastole

Ventricles relax

14

The A&V work together as a ?

Functional syncytium

15

Electrical Activity through the heart

SA node-> junction fibers->AV Node-> AV bundle(his)-> L&R bundle branches-> Purkinje fibers

16

Electrocardiogram (ECG or EKG)

a recording of the electroactivity through the heart

17

P wave

Atrial systole

18

QRS complex

Ventricular systole

19

T Wave

Ventricular diastole

20

Parasympathetic

Via the vagus nerve, decreases rate

21

Sympathetic

Via accelerator nerves,increase Rate

22

Arrhythmias

abnormal rhythm

23

Fibrillation

small area of chaotic contraction, no normal contraction

24

Tachycardia

increased HR, more then 100BPM

25

Premature beat

actopic impulses, abnormal impulses

26

Flutter

reg, and rapid, greater then 250

27

three layers of arteriols

tunica interna
tunica media
tunica externa

28

Tunica Interna

Inner endothelium of S2 and CT

29

Tunica Media

Smooth muscle and Elastic Tissue

30

Tunica Externa

CT and Vasa Vasorum

31

Capillary

Exchange of materials between blood and tissue fluid around cells

32

regulate blood through 3 things

1) Precapillary sphincters
2) Vasodilation and vasoconstriction
3) Capillary Density

33

Ascites

Fluid accumulation in peritoneal cavity from a weak R ventricle

34

Atherosclerosis

plaque of interna (reversible)

35

Arteriosclerosis

Calcium deposits within the interna (not reversible)

36

Varicose Veins

Abnormal dilation in the veins

37

Aneurysm

Weak walls

38

Phlebitis

Inflammation of vein

39

thrombophlebitis

Inflammation of deep veins with blockage

40

Blood Pressure

Force of blood exerted against the walls of blood vessels

41

Five factors of arterial pressure

Stroke volume
Peripheral resistance
Viscosity
Rate
Blood Volume

42

Stroke Volume

Output of the left ventricle (70mL)

43

Systolic (pressure)

max pressure during ventricular contraction

44

Diastolic (pressure)

minimum pressure with ventricle relaxation

45

Cardiac Output

Volume/minute = stroke volume (times) rate

46

Peripheral resistance

Friction from blood going through blood vessels

47

Viscosity

Thickness of a liquid compared to water

48

Frank-Starling Law of the heart

Greater venous return, greater ventricular will fill more fully, produces stronger contraction = greater stroke volume and more cardiac output

49

Venous Blood Flow

1) Skeletal muscle Contraction
2) Respiratory Movements
3) Vein vasoconstriction
4) Little pressure left

50

Skeletal Muscle Contraction

Squishing blood out of extremities

51

Respiratory Movements

Diaphragm goes down pushes blood out

52

Vein Vasoconstriction

Veins are primary savior when going in shock

53

Little Pressure Left

little pressure left at ends of capillaries

54

endo

inside the heart

55

Epi

Around the heart

56

Myo

around the muscle

57

2 atrioventricular orifices

AV
Semilunar valves

58

Coronary arteries names

post IV
circumflex
Marginal
LAD

59

Factors that affect Cardiac Control

Baroreceptors
BP
Temperature
Calcium ions, potassium ions

60

function of heart

it pumps

61

function of valves

to prevent back flow

62

functions of vessel

to carry

63

Names of hypotension

unknown (essential, primary, ideopathc)
known (secondary)