Due to trauma the patient has lost 25% of circulating blood volume. Name the emergency compensatory mechanism against blood loss:

Answer options

1. Increase of reticulocyte number
2. Restoration of blood protein composition
3. Interstitial fluid inflow to the vessels
4. Restoration of erythrocyte number
5. Erythropoiesis activation

Explanation

In an emergency condition, when severe blood loss occurs, to avoid hypovolemic shock, some compensatory mechanism starts. Interstitial fluid, fluid present between the cells, enters the vessels to increase the circulating blood volume.