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heart
| Question | Answer |
|---|---|
| What is contraction | one of the 2 phases of heartbeat |
| What is relaxation | the 2nd phase of heartbeats |
| What is electrical impulses | it determinea rate and regularity of the heartbeat |
| What is lubb dubb | It is the sound of the heart |
| What is blood pressure | measurement of amount of pressure exerted against the walls of the vessel |
| What is systolic blood pressure | highest blood pressure |
| What is diastolic blood pressure | lowest blood pressure |
| What is normal blood pressure | 120/80 mm Hg. |