The motor unit is composed of both the skeletal and muscular systems.
Hi !
Answer:
speeds up the heart beating : <em>adrenaline</em>
narrows arteries to increase blood pressure : <em>cortisol</em>
<em>only found in females : </em>estrogen
Asphyxiation because it is a condition caused by lack of oxygen, which causes one to choke.
The answer is A! All other options are cardiovascular exercise while A allows stretching and work of the abdomen and muscles! Hope this helps.
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