Below is a chart listing several factors that involved in the circulatory system and heart function. Compare these factors in a healthy and unhealthy individual. Fill in the outside blanks with the word ‘higher’ or ‘lower.’
http://imageshack.us/photo/my-images/806…
I did this question but still unsure about some of them, please help!
http://imageshack.us/photo/my-images/806…
I did this question but still unsure about some of them, please help!
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Having taking many physiology courses, and knowing the definition of homeostasis. An unhealthy individual with relations to the 4 issues you addressed would be anything out of balance.
Heart Rate - An unhealthy individual with a low HR would have limited perfusion, thus, would die.
- An unhealthy individual with a high resting HR would cause additional muscle strain for the heart, may also lead to increased BP which can cause organ damage if prolonged.
Blood Pressure - Obviously if it is to low, the perfusion will not be sufficient and blood will pool.
- If too high organ damage occurs - i.e aneurysms
Increase during Excersie (of HR) - Is a needed thing for most individuals as the metabolic needs of our cells increase
- However, more fit individuals have a higher stroke volume - i.e marathoners and have a lower HR during excercise
Stroke Volume - Low stroke volume - Leads to low perfusion
- HIgh stroke volume leads to high perfusion - also high SV can decrease HR (good thing)
I must say, I don't like the way that chart is made as homeostasis of the cardiac system is a balancing.
My advice is know the relationships of the cardiac system. I.e CO = SV*HR
Know how the body reacts in different situations, sadly however, the term healthy and unhealthy is the best way to describe it.
Heart Rate - An unhealthy individual with a low HR would have limited perfusion, thus, would die.
- An unhealthy individual with a high resting HR would cause additional muscle strain for the heart, may also lead to increased BP which can cause organ damage if prolonged.
Blood Pressure - Obviously if it is to low, the perfusion will not be sufficient and blood will pool.
- If too high organ damage occurs - i.e aneurysms
Increase during Excersie (of HR) - Is a needed thing for most individuals as the metabolic needs of our cells increase
- However, more fit individuals have a higher stroke volume - i.e marathoners and have a lower HR during excercise
Stroke Volume - Low stroke volume - Leads to low perfusion
- HIgh stroke volume leads to high perfusion - also high SV can decrease HR (good thing)
I must say, I don't like the way that chart is made as homeostasis of the cardiac system is a balancing.
My advice is know the relationships of the cardiac system. I.e CO = SV*HR
Know how the body reacts in different situations, sadly however, the term healthy and unhealthy is the best way to describe it.