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Author Question: Heart valves serve what purpose? (Read 68 times)

lindiwe

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on: Apr 15, 2019

Question 1

The heart's valves open and close in response to changes in
◦ the heart's pacemaker.
◦ pressure.
◦ sodium and potassium concentration.
◦ oxygenation.

Question 2

Heart valves serve what purpose?
◦ They prevent backflow of blood.
◦ They control the heart's electrical signals.
◦ They prevent blood from flowing forward.
◦ They prevent oxygenated blood from flowing through the coronary arteries.
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Marked as best answer by lindiwe on Apr 15, 2019

Sarahjh

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Reply #1 on: Apr 15, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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lindiwe

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Reply #2 on: Apr 15, 2019
TY


Sarahjh

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Reply #3 on: Apr 15, 2019
You're welcome


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