Answer: Refractory period of the cardiac action potential
Explanation:
Unlike the skeletal muscle which can be reactivated before it reaches a contraction, cardiac muscle must wait before it is almost completely relaxed to be activated again (because of its long refractory period), so one cannot make an increase in strength of contraction with a high frequency of stimulations.
Answer:
The answer would be 2) Her body has stopped producing estrogen
Explanation:
<span>A state of irritability, restlessness and paranoia, and may even cause a total epi- sis of paranoid psychosis in which the sense of reality is lost and suffer of hearing hallucinations. (Long effects)
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<span>Irritability and anxiety, we may also have tremors, dizziness, muscle spasms or paranoia. (short effects)</span><span>
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Answer:
Mary's target heart rate is 103 beats per minute (bpm).
Explanation:
The maximum heart rate (MHR) is the rate at which the human heart of a given person reaches the highest demands. At rest, the heart rate is about 60 to 80 beats per minute.
MHR = 220 - age
So, for Mary: MHR = 220 - 14 = 206 beats per minute (bpm)
Now we can calculate Mary's target heart rate:
Target heart rate = MHR * 50% = 206 * 0.5 = 103 beats per minute (bpm)
Hope this helped!
That is belongs to an elderly woman
