04 - Cardiorespiratory Part 1

Organize these options into the right categories

Groups:

(a) Heart

,

(b) Blood vessels

,

(c) Lungs

,

(d) Muscle cells

• transports oxygen from the atmosphere

• ventricular-arterial coupling

• transports oxygen from the lungs to the mitochondria

• transports blood from the heart to precisely match oxygen requirements

• right and left ventricular function (both systole and diastole)

• pulmonary ventilation and diffusion

• communicates the metabolic demands to the cardiovascular control centre

• receives and uses the oxygen and nutrients delivered by the blood

Your heart beats over 100,000 times per day

• True

• False

Your heart is asymmetrical

• True

• False

Your heart is approximately the size of your clenched fist

• True

• False

Organize these options into the right categories

Groups:

(a) Rest

,

(b) Exercise

• HR increases up to 170 to 210 bpm

• 15-20% of blood is delivered to your skeletal muscles

• 85-90% of blood is delivered to your skeletal muscles

• HR decreases

• 40-60 breaths per minute

• cardiac output is ~20 litres per minute

• diastolic blood pressure (DBP) stays the same or decreases slightly

• Stroke volume (SV) increases

• cardiac output is ~5 litres per minute

• Systolic blood pressure (SBP) decreases

Organize these options into the right categories

Groups:

(a) Normal

,

(b) Warning Signs

• Physical or verbal manifestations of severe fatigue

• A drop in the systolic pressure of more than 10 mm Hg from baseline

• No change or slight decrease in DBP during exercise

• SBP increases with increasing workloads at a rate of approx. 10 mm Hg per 1 MET

• Noticeable change in heart rhythm by palpation

• Systolic reading greater than 250 mm Hg

• Shortness of breath that exceeds the intensity ofthe exercise

• Post-exercise SBP returns to pre-exercise levels or lower by 6 minutes recovery

• HR decreases by 22 beats total by 120s of recovery

• Failure ofthe systolic pressure to increase with the increasing workload

• Diastolic reading greater than 115 mm Hg

• HR decreases by at least 12 beats during the first minute of recovery

• HR does not increase with increased exercise intensity

• HR increases with progressive workloads at a rate of approx. 10 bpm per 1 MET