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CVS 100- PRINCIPLES OF ELECTRO EXAM 1
PRIMARY PACE-MAKER OF THE HEART
ORDER OF CONDUCTION OF HEART
CVS 100- PRINCIPLES OF ELECTRO EXAM 1
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1
ORDER OF CONDUCTION OF HEART
PURKINJE FIBER, RT + LT BUNDLE BRANCHES, AV BUNDLE OF HIS, AV NODE, SA NODE
SA NODE, PURKINJE FIBER, BUNDLE BRANCHES, AV NODE, RT +LT BYNDLE BRANCHES
SA NODE, AV NODE, AV BUNDLE OF HIS, RT + LT BUNDLE BRANCHE, PURKINJE FIBERS
AV NODE, AV BUNDLE OF HIS, RT + LT BUNDLE BRANCHES, PURKINJE FIBER, SA NODE
2
PRIMARY PACE-MAKER OF THE HEART
PURKINJE FIBER
SA NODE
AV NODE
BUNDLE OF HIS
3
WHAT DOES THE SKELETON OF THE HEART INSULATE (
SEPARATE
)
VALVES FROM CUSP
VEIN FROM VENTRICLES
ARTERIES FROM VEINS
ATRIA FROM VENTRICLES
4
POSTERIOR TO THE HEART
LIVER
STERNUM
VERTEBRAL COLUMN + ESOPHAGUS
HEART + LUNGS
5
WHAT LAYERS DOES THE PERICARDIAL SAC CONSISTS OF?
VISCERAL PERICARDIUM
PARIETAL PERICARDIUM + VISCERAL PERICARDIUM
FIBROUS PERICARDIUM + PARIETAL PERICARDIUM
VISCERAL PERICARIUM + FIBROUS PERICARDIUM
6
ABILITY OF CARDIAC CELL TO SHORTEN, CAUSING CARDIAC MUSCLE CONTRACTION IN RESPONSE TO AN ELECTRICAL STIMULUS
CONDUCTIVITY
EXCITABILITY
CONTRACTILITY
AUTOMATICITY
7
ATRIAL MYOCARDIUM CAUSES DEPOLARIZATION OF BOTH_
PULMONARY ARTERIES
VENTRICLES
ATRIAS
TRICUSPID/MITRAL VALVE
8
ECG WAVE FORM INDICATES..
HOW HEART IS FUNCTIONING MANUALLY
THE WAVEFORMS ON THE ECG PAPER
HOW QUICKLY THE PULSE IS GOING
HOW HEART IS FUNCTIONING ELECTRICALLY
9
WHICH CHAMBERS PUMP BLOOD?
ARTERIES (AWAY)
ATRIA(UPPER)
VENTRICLE (LOWER)
VEINS (TOWARDS)
10
POSTERIOR TO THE STERNUM
BREAST BONE
HEART
PANCREAS
LUNGS
11
AUGMENTED LEADS
LEAD I; LEAD II; LEAD III
CREATES SYSTOLE HR
CREASTES DIASTOLE HR
AVR ; AVL; AVF
12
WHERE IS THE HEART LOCATED?
IN THE MIDDLE OF THE STERNUM CAVITY, 2/3 INTO THE THORAX
ANTERIOR TO THE STERNUM, 2/3 INTO THE LUNGS
IN THE MIDDLE MEDIASTINUM OF THE THORAX, BETWEEN THE 2 LUNGS
IN THE LEFT MEDIATINUM OF THE THORAX, BETWEEN THE STERNUM
13
HOW MANY CHEST LEAD ARE ON A STANDARD 12 LEAD ECG?
SIX
FIVE
TEN
FOUR
14
USUALLY PRODUCES NEGATIVE DEFLECTION
AVL
AVF
LEAD III
AVR
15
RAPIDLY TRANSMITS IMPULSES THROUGHOUT VENTRICULAR MYOCARDIUM->BOTH VENTRICLES DEPOLARIZE THEN CONTRACT AT SAME TIME
5 STATIONS (IN CONDUCTION SYSTEM)
STATIONS (IN CONDUCTION SYSTEM)
2 STATIONS (IN CONDUCTION SYSTEM)
3 STATIONS (IN CONDUCTION SYSTEM)
16
CAUSES FIRST HEARD SOUND, S1 (LUBB)
CAUSED BY CLOSURE OF AV VALVES
CAUSED BY THE MITRAL VALVE NOT CLOSING
CASUED BY OVERFILLING OF THE ATRIA
CAUSED BY CLOSURE OF THE VENTRICLES
17
LOCATED IN THE PURKINJE FIBERS
SA NODES
VENTRICULAR PACEMAKER
ARTIAL PACEMAKER
AV NODES
18
LATERAL TO THE HEART
BREAST BONE
LUNGS
HEART
STERNUM
19
WHERE DOES PULMONARY ARTERIES TRANSPORT DEOXYGENATED BLOOD?
HEART -> LUNGS
VIENS-> ARTERIES
ATRIUM-> VENTRICLE
LUNGS-> HEART
20
___ HAS THINNER WALLS
VENTRICLE
ATRIA
ARTERIES
VALVES
21
HOW MANY CHAMBERS IS THE HEART DIVIDED INTO?
TWO CHAMBERS
FOUR CHAMBERS
THREE CHAMBERS
FIVE CHAMBERS
22
ABILITY OF CARDIAC CELL TO RECEIVE ELECTRICAL STIMULUS + CONDUCT THAT IMPULSE TO AN ADJACENT CARDIAC CELL
EXCITABILITY
CONDUCTIVITY
CONTRACTILITY
AUTOMATICITY
23
RECIEVES DEOXYGENATED BLOOD
LEFT ATRIUM
LEFT VENTRICLE
RIGHT ATRIUM
RIGHT VENTRICLE
24
RECORDS ACTIVITY FROM HEART TO RIGHT ARM
AVR
AVL
AVF
LEAD III
25
INTERVENTRICULAR SEPTUM SEPARATES
THE ARTERIES
THE 2 VENTRICLES
THE 2 ARTIAS
THE VALVES
26
DRAINS HEAD, NECK, +UPPER LIMBS
SUPERIOR VENA CAVA
INFERIOR VENA CAVA
CORONARY SINUS
LEFT VENTRICLE
27
LEAD II
RECORDS TRACING FROM RIGHT ARM (-) -> LEFT LEG (+)
RECORDS TRACING FROM LEFT ARM (-) ->RIGHT ARM (+)
RECORDS TRACING FROM RIGHT ARM (-) -> LEFT ARM (+)
RECORDS ELELCTRICAL ACTIVITY FROM LEFT ARM (-) -> LEFT LEG (+)
28
WHICH CHAMBERS RECEIVE THE BLOOD?
ARTERIES (AWAY)
ATRIA (UPPER)
VEINS(TOWARDS)
VENTRICLES (LOWER)
29
MICROSCOPIC BLOOD VESSELS THAT CONNECT ARTERIES + VEINS; TO ALLOW GAS EXCHANGE
ARTERIES
CAPILLARY BEDS
VEINS
WHITE BLOOD CELLS
30
ELECTRIC CHANGE -> MECHANICAL CHANGE-> CONTRACTION
CONTRACTING
DEPOLARIZATION
REPOLARIZATION
RELAXING
31
APEX IS DIRECTED DOWNWARDS, ANTERIORLY, TO THE LEFT
False
True
32
RETURNS BLOOD FROM BOTH THE LUNGS -> HEART
RIGHT ATRIUM
LEFT VENTRICLE
PULMONARY ARTERIES
PULMONARY VEINS
33
STANDARD LIMB LEADS
LEAD I, II, III
CREATES POSITIVE FEEDBACK
AVR; AVF; AVL
CREATES NEGATIVE FEEDBACK
34
SEMI-LUNAR VALVES
AORTIC AND TRICUSPID VALVE
TRICUSPID AND MITRAL VALVE
PULMONARY +AORTIC VALVE
PULMONARY AND BICUSPID VALVE
35
INNERMOST LAYER; LINES HEART INNER CHAMBERS
PERICARDIUM
EPIDCARDIUM
MYOCARDIUM
ENDOCARDIUM
36
EXTERNAL (OUTER) LAYER OF THE HEART
MYOCARDIUM
PERICARDIUM
EPICARDIUM
ENDOCARIDUM
37
WHAT DOES THE PERICARDIAL SPACE CONTAIN?
PERICARDIAL SAC
SEROUD FLUID; MAXIMUM FRICTION
SEROUS FLUID ; MINIMIZE FRICTION
SEROUS FLUID TO SUPPORT THE HEART
38
ABILITY OF CARDIAC MUSCLE CELLS TO RESPOND TO AN OUTSIDE STIMULUS
EXCITABILITY
CONTRACTILITY
AUTOMATICITY
CONDUCTIVITY
39
INFERIOR TO THE HEART
LIVER
STERNUM
LUNGS
DIAPHRAGM
40
CONDUCTIVITY
INITIATE ELECTRICITY
MUSCLE SHORTENED
STIMULATED
ELECTRICITY TRAVEL (TRANSMIT)
41
SIX CHEST LEAD; FOUR LIMB LEADS; CODED BY COLOR + LETTER
12 ECG LEADS
10 LEAD WIRES
6 LEAD WIRES
8 LEAD WIRES
42
WHEN BOTH VENTRICLES
CONTRACT
AT ONCE WHAT ARE ATRIAS DOING?
DEPOLARIZATION
RELAXING
CONTRACTING
REPOLARIZATION
43
DELAYS ELECTRICAL SIGNAL BEFORE CONDUCTING IT TO THE VENTRICLES
AV NODE
SA NODE
PURKINJE FIBERS
BUNDLES OF HIS
44
CARRIES BLOOD
AWAY
FROM THE HEART
VENA CAVA
CAPILLARIES
VEINS
ARTERIES
45
AUTOMATICITY
STIMULATED
MUSCLE SHORTENED
INITIATE ELECTRICITY
ELECTRICITY TRAVEL (TRANSMIT)
46
WHAT IS THE INTRINSIC FIRING OF THE AV NODE
40-60BPM
0-20BPM
20-40BPM
60-100BPM
47
COVERING OF THE HEART
PERICARDIUM
FIBROUS PERICARDIUM
VISEROUS LAYER
PERICARDIAL SAC
48
___ IS THE TWO LOWER CHAMBERS OF THE HEART
RIGHT AND LEFT VENTRICLES (PUMPING)
RIGHT AND LEFT ATRIAS (PUMPING)
RIGHT AND LEFT ATRIAS (RECEIVING)
RIGHT AND LEFT VENTRICLES (RECEIVING)
49
DRAINS MYOCARDIUM
RIGHT ATRIUM
INFERIOR VENA CAVA
SUPERIOR VENA CAVA
CORONARY SINUS
50
WHEN BOTH VENTRICLES
RELAX
AT ONCE WHAT ARE ATRIAS DOING?
REPOLARIZATION
DEPOLARIZATION
RELAXING
CONTRACTING
51
EXIT OF LEFT VENTRICLE TO AORTA; ENTRANCE OF AORTA
AORTIC VALVE
PULMONARY VALVE
TRICUSPID VALVE
BICUSPID VALVE
52
IMPORTANCE OF KNOWING THE HEARTS LOCATION
ECG, HEART RATE, BP
ECG, PUNCTURE, ULTRASOUND
HR, BP, RR
CPR, ECG, AUSCULIATION
53
OUTERMOST SINGLE LAYER
PERICARDIAL SAC
FIBROUS PERICARDIUM
VISBROUS PERICARDIUM
PERICARDIUM
54
SECOND PACEMAKER OF. THE HEART
BUNDLES OF HIS
SA NODE
PRUKINJE FIBERS
AV NODE
55
HEART RATE CONTROLLED BY..
ELECTRICAL FIBERS
CARDIAC CENTER; AUTONOMIC NERVOUS SYSTEM
BLOOD CYCLE; 12 LEADS
SYMPATHETIC FIBER; PARASYMPATHETIC FIBER
56
SYMPATHETIC FIBERS
CAUSES LUNG GAS EXCHANGE
INITIATES THE BLOOD CYCLE
SLOWS HEART RATE
INCREASE HEART RATE
57
CARDIAC PACEMAKER CELLS TO SPONTANEOUSLY INITIATE ELECTRICAL IMPULSE W/O BEING STIMULATED FROM ANOTHER SOURCE (AS NERVE)
CONTRACTILITY
CONDUCTIVITY
AUTOMATICITY
EXCITABILITY
58
RECORDS ACTIVITY FROM HEART TO LEFT ARM
LEAD I
AVL
AVF
AVR
59
HOW MUCH OF THE HEARTS LOCATION IS ON THE LEFT SIDE OF THE THORAX?
2/3
WHOLE
1/2
1/3
60
CAUSES SECOND HEART SOUND, S2 (DUPP)
CAUSED BY TRICUSPID VALVE OPENING
CAUSED BY CLOSURE OF PULMONARY VEINS
CAUSED BY CLOSURE OF SEMILUNAR. VALVES
OVERFILLING OF THE ATRIA
61
LARGEST VEINS
SINUSES
PULMONARY VEINS
VENTRICLES
VENA CAVA
62
CARRIES BLOOD
TOWARDS
THE HEART
ARTERIES
CAPILLARIES
VEINS
MUSCLES
63
WHAT IS EACH LEAD ATTACHED TO ?
PADS
THE HEART
ELECTRODE
ULTRASOUND MACHINE
64
CARDIAC ACCELERATOR NERVE
SLOWS THE PARASYMPATHETIC FIBER
STIMULATE PARASYMPATHEITC FIBER
STIMULATE SYMPATHETIC FIBER
SLOWS THE SYMPATHETIC FIBER
65
ELECTRIC CHANGE WHEN POSITIVELY CHARGED IONS MOVE TO CELL CHANGING INFERIOR OF IT TO BECOME POSITIVE
DEPOLARIZATION
RELAXING
CONTRACTING
REPOLARIZATION
66
WHEN BOTH ATRIAS
CONTRACT
AT ONCE WHAT ARE VENTRICLES DOING?
CONTRACTING
REPOLARIZATION
RELAXING
DEPOLARIZATION
67
INTRINSIC FIRING RATE OF 20-40 BPM
AV BUNDLES OF HIS
PURKINJE FIBERS
SA NODE
BUNDLE BRANCHES
68
DRAINS THORAX, ABDOMEN, PELVIS, + LOWER LIMBS
CORONARY SINUS
INFERIOR VENA CAVA
RIGHT VENTRICLE
SUPERIOR VENA CAVA
69
ARRYTHMIAS
CAUSES NORMAL SINUS RYTHM
ECG DIFFERS FROM NORMAL SINUS RHYTHM
ECG IS THE SAME AS NORMAL SINUS RYTHM
RELEASES FRIGHT OR FLIGHT SIGNALS
70
CUSPS IN THE TRICUSPID VALVE
5
3
2
4
71
LOCATED AT THE LEVEL OF THE 5TH ICS (BETWEEN RIBS) LEFT MIDCLAVICULAR LINE
BASE OF HEART
STERNUM
THORAX
APEX
72
DESCRIBE MYOCARDIUM
OUTTER LAYER, THICK + MUSCULAR
MIDDLE LAYER, THICK +MUSCULAR
INNER LAYER, THIN + FATTY
MIDDLE LAYER, THIN + FATTY
73
RECEIVES OXYGENATED BLOOD
RIGHT ATRIUM
RIGHT VENTRICLE
LEFT VENTRICLE
LEFT ATRIUM
74
LAYER; AT THE 2ND ICS, BLOOD VESSEL ATTACHED
2/3 LEFT OF HEART THORAX
BASE OF HEART
APEX OF HEART
STERNUM (BREAST BONE)
75
INTERATRIAL SEPTUM SEPARATES
THE VALVES
THE 2 ATRIA
THE ARTERIES
THE 2 VENTRICLES
76
LEAD I
RECORDS TRACING FROM RIGHT ARM (-) -> LEFT ARM (+)
RECORDS TRACING FROM RIGHT ARM (-) -> LEFT LEG (+)
RECORDS TRACING FROM LEFT ARM (-) -> HEART (+)
RECORDS TRACING FROM LEFT ARM (-) -> LEFT LEG (+)
77
EXIT OF RIGHT VENTRICLE -> M.P.A; ENTRANCE OF PULMONARY TRUNK
TRICUSPID VALVE
BICUSPID VALVE
PULMONARY VALVE
PULMONARY ARTERY
78
WHAT DOES EACH LEAD IN A 12-LEAD ECG PRODUCE?
MULTIPLE VIEW FROM MULTIPLE ANGLES
SINGLE VIEW FROM SLIGHTLY DIFFERENT ANGLE
MULTIPLE VIEW FROM SLIGHTLY DIFFERENT ANGLE
SINGLE VIEW FROM MULTIPLE DIFFERENT ANGLE
79
HAS 'AURICLE'; SMALL EXTENSIONS ANTERIORLY
VENTRICLE
ATRIA
VEINS
ARTERIES
80
THE MYOCARDIUM OF __ VENTRICLE IS THICKER THAN __ VENTRICLE
RIGHT ; LEFT
HIGH; LOWER
LOWER; HIGHER
LEFT ; RIGHT
81
RELAXATION PHASE/ FILLING/ REPOLARIZATION
DIASTOLE
REPOLARIZATION
SYSTOLE
SYSTOLE
82
ATRIO-VENTRICULAR VALVES (AV VALVES)
MITRAL AND PULMONARY VALVE
TRICUSPID VALVE + MITRAL VALVE
AORTIC AND PULMONARY VALVE
TRICUSPID AND AORTIC VALVE
83
LIST THE 3 TISSUE LAYER OF THE HEART WALL
ENDOCARDIUM, MYOCARDIUM, EPICARDIUM
PERICARIDUM,FIBROUS , VEROUS
ATRIUM, VENTRICLE, VALVES
SAC, MYOCARDIUM, FIBROUS
84
NEGATIVE
ISOELECTRIC; POSITIVE; NEGATIVE
UPRIGHT, CURRENT FLOWS TO POSITIVE ELECTRODE
DOWNWARD, CURRENT FLOWS AWAY FROM POSITIVE ELECTRODE
FLAT, NO CURRENT FLOWING
85
ISOELECTRIC
DOWNWARD, CURRENT FLOWS AWAY FROM POSITIVE ELECTRODE
ISOELECTRIC; POSITIVE; NEGATIVE
UPRIGHT, CURRENT FLOWS TO POSITIVE ELECTRODE
FLAT, NO CURRENT FLOWING
86
FEATURES OF CARDIAC MUSCLE
LEAD ECG; INTRAVENTIRCULAR NODES; INTERATRIAL NODES
EXCITABILITY; LEADS; CONDUCTIVITY
AUTOMATICITY, EXCITABILITY, CONDUCTIVITY, CONTRACILITY
RIGHT AND LEFT SIDES; CONTRACTING AND RELAXING
87
EXCITABILITY
ELECTRICITY TRAVEL (TRANSMIT)
MUSCLE SHORTENED
INITIATE ELECTRICITY
STIMULATED
88
ALLOWS TIIME FOR THE ATRIA TO FINISH CONTRACTING
AV BUNDLE BRANCHES
AV NODE
SA NODE
PURKINJE FIBERS
89
WHICH BEST WOULD DESCRIBE THE AV VALVE BEING OPEN?
DIASTOLE
SYSTOLE
REPOLARIZATION
DEPOLARIZATION
90
POSITIVE
ISOELECTRIC; POSITIVE; NEGATIVE
UPRIGHT, CURRENT FLOWS TO POSITIVE ELECTRODE
DOWNWARD, CURRENT FLOWS AWAY FROM POSITIVE ELECTRODE
FLAT, NO CURRENT FLOWING
91
ANTERIOR TO THE HEART
VERTEBRAL + ESOPHAGUS
LUNGS
STERNUM (BREAST BONE)
LIVER
92
BRINGS OXYGENATED BLOOD TO LEFT ATRIUM
LUNGS; GAS EXCHANGE
PULMONARY ARTERIES
PULMONARY VEINS (4)
BICUSPID VALVE
93
WHICH BEST DESCRIBES HEART SOUNDS?
SOUNDS OF VIBRATIONS DUE TO CLOSURE OF HEART VALVES
SOUNDS OF VIBRATIONS DUE TO CLOSURE OF CAPILLARY BEDS
SOUNDS OF VIBRATIONS DUE TO CLOSURE OF ARTERIES
SOUND OF VIBRATIONS THROUGH THE BLOOD FLOW MOVEMENT
94
12- LEAD ECG
PRODUCE COMPLETE PICTURE OF HEARTS AV NODE ACTIVITY
PRODUCE PICTURE OF SA NODE ACTIVITY
PRODUCE COMPLETE PICTURE OF HEARTS BUNDLES OF HIS
PRODUCE COMPLETE PICTURE OF HEARTS ELECTRICAL ACTIVITY
95
WHERE DOES PULMONARY VEINS TRANSPORT OXYGENATED BLOOD?
LUNGS->HEART
HEART-> LUNGS
HEART-> VALVES
VEINS-> ARTERIES
96
HOW MANY TISSUE LAYER IS THE HEART WALL MADE UP OF?
SEVEN
THREE
TWO
FIVE
97
HOW MANY ELECTRICAL IMPULSES DOES SA NODE GENERATE?
60-100
0-100
20-40
40-60
98
CUSPS IN THE MITRAL (BICUSPID) VALVE
2
5
7
3
99
BEST DESCRIBES PERICARDIAL SAC
TRIPLE LAYER
DOUBLE LAYER
QUADRUPLE LAYERS
SINGLE LAYER
100
LEAD III
RECORDS ELELCTRICAL ACTIVITY FROM LEFT ARM (-) -> LEFT LEG (+)
RECORDS ELECTRICAL ACTIVITY FROM RIGHT ARM (-)-> LEFT LEG
RECORDS ELECTRICAL ACTIVITY FROM LEFT ARM (-) -> RIGHT ARM (+)
RECORD ELECTRICAL ACTIVITY FORM LEFT LEG (-) -> RIGHT LEG (+)
101
RESPONSIBLE FOR PUMPING ACTION
MYOCARIDUM
EPICARDIUM
ENDOCARDIUM
PERICARDIUM
102
LARGEST ARTERY
PULMONARY TRUNK
ATRIA
VENTRICLES
AORTA
103
BEST DESCRIBE REPOLARIZATION
ELECTRICAL CHANGE-> MECHANICAL CHANGE-> RELAXATION
MECHANICAL CHANGE-> ELECTRICAL CHANGE-> CONTRACTING
MECHANICAL CHANGE -> ELECTRICAL CHANGE-> RELAXING
ELECTRICAL CHANGE-> MECHANICAL CHANGE-> CONTRACTING
104
CUSP IN THE PULMONARY + AORTIC VALVE
3
2
5
7
105
__ IS THE POINTED END OF THE HEART
APEX
THORAX
BASE
STERNUM
106
RECORDS ACTIVITY FROM HEART TO LEFT LEG
AVL
AVR
AVF
LEAD II
107
ATRIOVENTRICULAR BUNDLE; RIGHT + LEFT BUNDLE BRANCHES; PURKINJE FIBERS
STATION (HEART RATE SYSTEM)
5 STATIONS ( IN CONDUCTION SYSTEM)
2 STATIONS (IN CONDUCTION SYSTEM)
3 STATIONS (IN CONDUCTION SYSTEM)
108
WHICH ARTERY DOES
NOT
CARRY OXYGENATED BLOOD?
CORONARY SINUS
PULMONARY VEINS
PULMONARY ARTERY
CAPILLARIES
109
BRINGS DEOXYGENATED BLOOD TO RIGHT ATRIUM
SVC,IVC,CS
BICUSPID VALVE
PULMONARY VEINS (4)
TRICUSPID VALVE
110
SPEEDS HEAR RATE; CAUSES STRESS
AV NODE ; 40-60 BMP
SYMPATHETIC FIBERS
PARASYMPATHETIC FIBERS
FLIGHT OR FRIGHT
111
WHICH VEINS DOES
NOT
CARRY DEOXYGENATED BLOOD?
PULMONARY VEINS
SUPERIOR VENA CAVA
INFERIOR VENA CAVA
PULMONARY ARTIERIES
112
CONTRACTIVITY
MUSCLE SHORTENED
ELECTRICITY TRAVEL (TRANSMIT)
INITIATE ELECTRICITY
STIMULATED
113
CARDIAC CYCLE
EVENTS THAT HAPPENED IN ONE HEART BEAT
EVENTS THAT HAPPENED IN SEVERAL HEART BEAT
CURRENT FLOW OF THE HEART
EVENTS THAT TAKE PLACE IN THE RIGHT SIDE OF THE HEART
114
TYPES OF WAVEFORM
ISOELECTRIC; POSITIVE; NEGATIVE
ISOELECTIC;NEGATIC;LEADS
AVR;AVF;AVL
ELECRTICAL LEADS
115
PARA-SYMPATHEITC FIBERS
INCREASE HEART RATE
CAUSES HEART TO STOP
RELAXES MUSCLE FIBERS
DECREASE HEART RATE
116
___ IS THE TWO UPPER CHAMBERS OF THE HEART
RIGHT AND LEFT ATRIA (PUMPING)
RIGHT AND LEFT VENTRICLES (RECEIVING)
RIGHT AND LEFT VENTRICLES (PUMPING)
RIGHT AND LEFT ATRIA (RECIEVING)
