How does stroke volume increase during exercise?
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Preload increases due to increased VR, contractility increases due to
increased SNA to LV
(afterload also increases but does not aid stroke volume)
,capillary diffusion
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the exchange of oxygen and carbon dioxide between the capillary blood
and metabolically active issues
capillaries
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dense network to aid O2 exchange
Key adaptation of arteries #1
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thick walls to withstand high pressure
Nerves
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innervated by ANS
, Key adaptation of arteries #2
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large lumen to reduce resistance to blood flow
Is capillary density similar in all muscles?
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no
Sinoatrial Node
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where the impulse for normal heart contractions is initiated; the heart's
pacemaker; the rhythm established is the sinus rhythm; PNS acts as brake
Arteries (fatigue resistant)
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coronary arteries provide BF to myocytes
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Preload increases due to increased VR, contractility increases due to
increased SNA to LV
(afterload also increases but does not aid stroke volume)
,capillary diffusion
Give this one a try later!
the exchange of oxygen and carbon dioxide between the capillary blood
and metabolically active issues
capillaries
Give this one a try later!
dense network to aid O2 exchange
Key adaptation of arteries #1
Give this one a try later!
thick walls to withstand high pressure
Nerves
Give this one a try later!
innervated by ANS
, Key adaptation of arteries #2
Give this one a try later!
large lumen to reduce resistance to blood flow
Is capillary density similar in all muscles?
Give this one a try later!
no
Sinoatrial Node
Give this one a try later!
where the impulse for normal heart contractions is initiated; the heart's
pacemaker; the rhythm established is the sinus rhythm; PNS acts as brake
Arteries (fatigue resistant)
Give this one a try later!
coronary arteries provide BF to myocytes
