True the heart like any muscle strengthens when you use it
<span>The autonomic nervous system is the part of the nervous system that controls muscles of internal organs (such as the heart, blood vessels, lungs, stomach, and intestines) and glands (such as salivary glands and sweat glands</span>
I would probably say C. economic class
Hypovolemic shock is caused by severe blood and fluid loss, such as from traumatic bodily injury, which makes the heart unable to pump enough blood to the body, or severe anemia where there is not enough blood to carry oxygen through the body.Hypovolemic shock is caused when there isn't enough blood in your blood vessels to carry oxygen to your organs. This can be caused by severe blood loss, for example, from injuries. Your blood delivers oxygen and vital nutrients to your organs
