1. Mark’s initial reaction of becoming red and sweating was a negative feedback reaction, from his body, to the heat. The human body can function properly in a certain temperature range. If the temperature of the internal environment rises above the acceptable range, the proteins in the body begin to denature. The body’s senses detect this temperature change, sends a signal through the afferent pathway to the integration center(brain). The integration center sends a signal via the efferent pathway to the effectors. In Mark’s case, the effectors were his sweat glands, opening up to cool the temperature and the blood rushing to the skin to also try to cool him off.
2. Mark’s low blood pressure can be explained by the fluid loss by sweating. Since Mark was not able to rehydrate the fluids he lost, the fluids in his blood decreased and thus his blood pressure decreased. After some time the body stops sweating to reserve the fluid for other important functions, which explains why he was not sweating.
3. …show more content…
The isotonic solution contains nonpenetrating electrolytes that essentially increases fluid in the ECF. The nonpenetrating electrolytes in the ECF help to increase and retain blood volume, thus bring the blood pressure back up to normal. If distilled water was used, the water would just go from the ECF to the ICF as it would hypotonic the cells. This would cause the cells to become bloated and perhaps even lyse. By having the nonpenetrating electrolytes stay in the ECF, the blood volume in the body increases, bring blood pressure back to normal, and the body back to
2. Mark’s low blood pressure can be explained by the fluid loss by sweating. Since Mark was not able to rehydrate the fluids he lost, the fluids in his blood decreased and thus his blood pressure decreased. After some time the body stops sweating to reserve the fluid for other important functions, which explains why he was not sweating.
3. …show more content…
The isotonic solution contains nonpenetrating electrolytes that essentially increases fluid in the ECF. The nonpenetrating electrolytes in the ECF help to increase and retain blood volume, thus bring the blood pressure back up to normal. If distilled water was used, the water would just go from the ECF to the ICF as it would hypotonic the cells. This would cause the cells to become bloated and perhaps even lyse. By having the nonpenetrating electrolytes stay in the ECF, the blood volume in the body increases, bring blood pressure back to normal, and the body back to