Advanced Clinical Nursing: Cardiac Physiology
and ECG Interpretation Exam (Q&A)
1
Q
describe the passage of blood through the heart
A
deoxygenated blood from the body arrives from cranial vena cava
right atrium
tricuspid valve
right ventricle
pulmonary valve
pulmonary artery to the lungs
pulmonary vein from the lungs
left atrium
mitral valve
left ventricle
aortic valve
aorta to systemic circulation
2
Q
what is the purpose of the heart beating?
A
pump blood around the body and lungs
,3
Q
what is myocardium made up of?
A
cardiac muscle
4
Q
is heart contraction governed by nerve impulse?
A
no - contracts automatically
5
Q
what is the process of heart contraction controlled by?
A
electrical impulses
6
Q
what relating to the heart is controlled by the autonomic nervous
system?
A
heart rate
7
Q
what part of the nervous system controlls heart rate?
A
autonomic
8
,Q
what are the 2 branches of the autonomic nervous system?
A
sympathetic
parasympathetic
9
Q
what effect does the sympathetic nervous system have on heart rate?
A
increases HR
10
Q
what effect does the parasympathetic nervous system have on heart
rate?
A
slows
11
Q
how does the parasympathetic nervous system slow heart rate?
A
release of acytylcholine
12
Q
how does the sympathetic nervous system increase heart rate?
A
releases catecholamines to accelerate HR
, 13
Q
what catecholamines increase HR?
A
adrenaline
noradrenaline
14
Q
what are the 2 types of cardiac cells?
A
electrical cells
myocardial cells
15
Q
what is the role of electrical cells within the heart?
A
conduction system of the heart
spontaneously generate and respond to electrical impulses
transmit electrical impulses
16
Q
how are electrical cells distributed throughout the heart?
A
orderly fashion throughout the heart
17
Q
and ECG Interpretation Exam (Q&A)
1
Q
describe the passage of blood through the heart
A
deoxygenated blood from the body arrives from cranial vena cava
right atrium
tricuspid valve
right ventricle
pulmonary valve
pulmonary artery to the lungs
pulmonary vein from the lungs
left atrium
mitral valve
left ventricle
aortic valve
aorta to systemic circulation
2
Q
what is the purpose of the heart beating?
A
pump blood around the body and lungs
,3
Q
what is myocardium made up of?
A
cardiac muscle
4
Q
is heart contraction governed by nerve impulse?
A
no - contracts automatically
5
Q
what is the process of heart contraction controlled by?
A
electrical impulses
6
Q
what relating to the heart is controlled by the autonomic nervous
system?
A
heart rate
7
Q
what part of the nervous system controlls heart rate?
A
autonomic
8
,Q
what are the 2 branches of the autonomic nervous system?
A
sympathetic
parasympathetic
9
Q
what effect does the sympathetic nervous system have on heart rate?
A
increases HR
10
Q
what effect does the parasympathetic nervous system have on heart
rate?
A
slows
11
Q
how does the parasympathetic nervous system slow heart rate?
A
release of acytylcholine
12
Q
how does the sympathetic nervous system increase heart rate?
A
releases catecholamines to accelerate HR
, 13
Q
what catecholamines increase HR?
A
adrenaline
noradrenaline
14
Q
what are the 2 types of cardiac cells?
A
electrical cells
myocardial cells
15
Q
what is the role of electrical cells within the heart?
A
conduction system of the heart
spontaneously generate and respond to electrical impulses
transmit electrical impulses
16
Q
how are electrical cells distributed throughout the heart?
A
orderly fashion throughout the heart
17
Q
