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Med Williams
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Cards (190)
What are the responses to one session of exercise on the body systems?
Muscular
: Increased blood flow,
mineral uptake
, increased temperature
Skeletal: Increased strength, improved flexibility
Cardiovascular: Increased heart rate, increased
stroke volume
, increased blood pressure, increased
oxygen delivery
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How many responses should be listed for the muscular system?
3
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How many responses should be listed for the cardiovascular system?
4
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What is the function of the sinoatrial node (SAN)?
It sends
impulses
to contract the heart
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What does the atrioventricular node (AVN) do?
Acts as a
buffer
that slows down signals
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What is the role of the Bundle of His?
Transports
electrical
impulses from the
AVN
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What do Purkinje fibres do?
They cause
ventricles
to contract and pump blood
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What are the differences between the sympathetic and parasympathetic nervous systems?
Sympathetic: Prepares body for intense activity, increases heart rate
Parasympathetic: Calms the body, decreases heart rate
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What is cardiac hypertrophy?
Enlargement of the heart muscle
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What happens to resting heart rate due to exercise?
It decreases
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What is stroke volume?
Volume of blood ejected from the
heart
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What happens to blood pressure during exercise?
It
increases
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How does regular exercise affect resting blood pressure?
It
decreases
resting
blood
pressure
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What is the name given to the contraction of the atria?
Atrial systole
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What is the name given to the contraction of the ventricles?
Ventricular systole
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What is the pathway of blood through the heart?
Deoxygenated blood enters through
vena cava
Blood goes to right
atrium
Blood flows to right
ventricle
Blood is pumped to lungs via
pulmonary artery
Oxygenated blood returns through
pulmonary vein
Blood enters left atrium
Blood flows to left ventricle
Blood is pumped to the body via
aorta
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What is the function of heart valves?
Stop
backflow
of blood
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What is the role of the septum in the heart?
Separates the
left
and
right
chambers
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How does the structure of the heart support its function?
Chambers
and
valves
ensure efficient blood flow
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What is the impact of high blood pressure on the heart?
Heart works
harder
to pump blood
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What are the symptoms of low blood pressure?
Dizziness
and
fainting
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What is the effect of dehydration on body temperature?
Body temperature rises above
normal
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What happens when muscles contract in terms of heat production?
Heat is produced as a
byproduct
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How does the body regulate temperature during exercise?
Through sweating and increased
blood flow
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What is the role of the medulla oblongata?
Controls
heart rate
and
breathing
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What is the significance of increased capillarization during exercise?
Enhances
oxygen delivery
to
muscles
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What is the impact of increased blood volume on performance?
Improves
oxygen transport
and
temperature regulation
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What is the function of the right atrium?
Receives
deoxygenated
blood from the body
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What is the function of the left ventricle?
Pumps
oxygenated
blood to the body
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What is the role of the pulmonary artery?
Carries
deoxygenated
blood to the lungs
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What is the role of the pulmonary vein?
Returns
oxygenated
blood to the heart
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What is the function of the aorta?
Distributes
oxygenated
blood to the body
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What is the significance of the heart's electrical conduction system?
Coordinates heart
contractions
for effective pumping
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How does the heart adapt to regular exercise?
Increases efficiency and strength of
contractions
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What is the role of the valves in the heart?
Prevent backflow of blood during
contractions
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What is the impact of exercise on the cardiovascular system?
Improves
heart function
and
blood circulation
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What is the function of the right ventricle?
Pumps
deoxygenated
blood to the lungs
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What is the role of the left atrium?
Receives
oxygenated
blood from the lungs
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What is the significance of the septum in the heart?
Separates
oxygenated
and
deoxygenated
blood
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What is the pathway of blood from the body to the lungs?
Vena cava
→
right atrium
→
right ventricle
→
pulmonary artery
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