Transcript No Slide Title

1
Conduction
System
2
ECG
3
Cardiac Cycle
4
Cardiac
Output
5
Blood
Vessels
6
Blood Pressure
7
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8
The heart contains this
special type of muscle
tissue.
9
What is a cardiac
muscle tissue?
10
The normal
range for heart
rate.
11
What is 60-100 bpm?
12
Area of tissue
known as “The
Pacemaker” of the
heart.
13
What is the
Sinoatrial (SA)
node?
14
The SA node
causes the
contraction of
these two heart
chambers.
15
What are the
atria?
16
List the five
components of
the conduction
system in order.
17
What are the SA
node, AV node,
AV bundle, bundle
branches, and
Purkinje fibers?
18
The letters ECG
stand for this.
19
What is
ElectroCardioGram?
20
In an ECG, the P
wave represents.
21
What is atrial
contraction?
22
In an ECG, the
QRS wave
represents.
23
What is ventricular
contraction and
atrial relaxation?
24
Draw a typical ECG
and label the waves
with the correct
letters.
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If a person’s ECG is abnormal
and it is found that her own
intrinsic conduction system is
not working properly this type
of medical device my be
attached to her heart.
27
What is pacemaker?
28
Name given to the
phase of the
cardiac cycle when
the ventricles
contract.
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What is systole?
30
Name given to the
phase of the
cardiac cycle when
the ventricles
relax.
31
What is diastole?
32
Causes the first
heart sound – “Lub”
33
What is closure of
the AV valves?
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Causes the second
heart sound – “Dub”
36
What is closure of
the aortic and
pulmonic valves?
37
Abnormal or unusual
heart sounds caused
by turbulent blood
flow in the heart
are called this.
38
What are heart
murmurs?
39
The two factors
that determine
cardiac output.
40
What are heart
rate and stroke
volume?
(CO=HRxSV)
41
Term used to describe
the amount of blood
pumped by a ventricle
with each beat.
42
What is the stroke
volume?
43
This is a person’s cardiac
output if his stroke
volume is 70ml/beat and
his heart rate is
60beats/min.
44
What is
4,200ml/min?
45
If the heart pumps
5250 ml/min.
What amount
returns to the
heart every min.?
46
What is 5250
ml/min.?
47
The total volume of
blood in the human
body
(approximately).
48
What is
approximately 5
liters?
49
Type of blood
vessels that carry
blood away from
the heart.
50
What is an artery?
51
Type of blood
vessel that carries
blood back to the
heart.
52
What is a vein?
53
Name of blood
vessels capable of
exchanging
materials with body
cells.
54
What are
capillaries?
55
Structures found in
veins that help
them to return
blood to the heart
against gravity.
56
What are valves?
57
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Type of blood
vessel that has a
thick muscle layer
and elastic tissue.
59
What is an artery?
60
A person’s highest
blood pressure
occurs during this
phase of the
cardiac cycle.
61
What is systole or
ventricular
contraction?
62
Type of blood
vessel in which
blood pressure is
highest.
63
What is the aorta
or the major
arteries?
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Type of blood
vessel in which
blood pressure is
the lowest.
65
What are the major
veins or the vena
cavae?
66
The two factors
that determine
blood pressure.
67
What are cardiac
output and
peripheral
resistance?
(BP=COxPR)
68
The blood in veins is often
at such low pressures that
it can’t move against
gravity to return to the
heart. Name a mechanism
that helps venous blood
return to the heart.
69
What is the
muscular pump?
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