fluid balance

Question 1

what is the total body fluid in males and females

Answer 1

60% males

50% females

Question 2

what is Euhydration

Answer 2

normal total body water

Question 3

what is hyperhydration

Answer 3

excess total body water

Question 4

what is hypohydration

Answer 4

reduced total body water

Question 5

what is dehydration

Answer 5

dynamic process of total water loss

Question 6

when water is lost through sweat, where in the body is the water lost from?

Answer 6

plasma volume 68%

intracellular water 23%

Question 7

what is the thirst threshold (osmolarity)

Answer 7

298mosmol/kg compared to normal osmolarity 280mosmol/kg

Question 8

how does a reduction in plasma volume due to sweat affect the cv system

Answer 8

less volume leads to decreased pressure. HR must increase to keep up blood pressure and cardiac output
leads to a decrease in blood flow to skin

Question 9

when should water be consumed to counteract the negative effects of dehydration

Answer 9

prior to, during and after exercise

Question 10

how does hypohydration affect the thermoregulatory system

Answer 10

fluid loss and dehydration rapidly reduce the body’s ability to regulate temperature
fluid loss means that the body needs to reduce skin directed blood flow and sweating to conserve fluid but this affects the bodys ability to decrease temperature

Question 11

what factors limit prolonged exercise

Answer 11

substrates
core temp
cardiovascular strain