Question

People who experience severe blood loss go into a condition known as hemorrhagic shock. Shock occurs when the blood volume returning to the heart is reduced. The heart responds by trying to increase output, which can result in the patient bleeding to death if they are not treated in time. Is this an example of negative feedback or positive feedback? Explain your answer.

Answer 1

Hemorrhagic shock occurs when the body begins to shut down due to large amounts of blood loss. People suffering injuries that involve heavy bleeding may go into hemorrhagic shock if the bleeding isn't stopped immediately. Common causes of hemorrhagic shock include: severe burns

In this type of shock, disruption of the sympathetic nervous system, as occurs in spinal cord or brain injury, causes widespread vasodilation. ... This form of shock results from decreased blood volume, often due to trauma. Inadequate blood returns to the heart, reducing cardiac output and blood pressure.

The obvious cause of hypovolemic shock is blood loss, but that isn't all of it. The loss of blood can come from external or internal bleeding due to illness or injury. Most of the time, hypovolemic shock will be a complication of another condition.