unit 4 - : Homeostatic Imbalances of the Heart

What is an arrhythmia?

irregular heart rhythm.

What is uncoordination of the heart?

A lack of rhythm in atrial and ventricular contraction.

What is fibrillation?

Rapid, irregular contractions.

Why are fibrillation contractions inefficient?

There is no complete cycle of contraction and relaxation.

What is bradycardia?

A heart rate below 60 bpm.

why can bradycardia be a problem?

The heart rate is very low, making oxygen delivery to the body inefficient.

Does bradycardia notes apply to extremely fit individuals

No

What is tachycardia?

A heart rate above 100 bpm

Why can tachycardia be a problem?

Contractions are so fast that the heart does not get the full cycle of contraction and relaxation.

How does tachycardia affect oxygen delivery?

Oxygen is not delivered efficiently.