Exam 7: Water and Electrolytes

When the extracellular fluid is hypertonic to the intracellular fluid, there will be a net water movement out of the cell.

When an athlete is hypohydrated, ____.

The Dietary Reference Intake (DRI) for sodium is 1,500 mg daily, however, these recommendations do NOT apply to ____.

What are the problems associated with too little and too much fluid prior to, during, and after exercise? Outline the general recommendations for fluid and electrolyte intake during these periods and explain the physiological basis for making these recommendations. Give an example of an appropriate recommendation for an athlete in one sport that is inappropriate for an athlete in a different sport. Answer Key

Match the statement with the term that best describes it. Answers may be used more than once. a.hypotonic b.hypertonic c.osmosis d.osmolarity e.hydrostatic pressure -When the number of solutes is measured per liter of solvent.

A beverage containing a carbohydrate concentration greater than 10% may be detrimental to an athlete during exercise because ____.

Match the statement with the term that best describes it. Answers may be used more than once. a.hypotonic b.hypertonic c.osmosis d.osmolarity e.hydrostatic pressure -When a person sweats heavily, there is a loss of water from the extracellular fluid and the ECF becomes ____ in relation to the intracellular fluid.

Which of the following is a true statement regarding sweat in trained athletes?

The extracellular fluid (ECF) is referred to as the "gateway" because water must pass through the ECF to reach cells.

The current American College of Sports Medicine recommendation for fluid intake during exercise is ____.

Which of the following is a true statement regarding extracellular (ECF) and intracellular (ICF) fluids under normal conditions?

Plasma and interstitial fluid, have nearly identical composition and distribution of electrolytes.

What effect would glycerol loading have on an athlete's body weight?

Which accounts for the largest amount of water loss in an athlete exercising in the heat?

Under normal conditions, sodium is actively pumped out of cells while potassium is simultaneously pumped into cells.

The main electrolyte lost in sweat during exercise is potassium.

Which of the following has a high potassium content?

On average, an adult's body contains approximately ____ % water (by weight):

One liter of water weighs approximately ____.

A daily intake of approximately __________ mg or less of caffeine does not have a negative effect on fluid or electrolyte balance.