Exercise in different environments: altitude and heat quiz games for PE and Sport (A level core)

1. 1

   What does the hormone EPO stimulate?

   Plasma volume increaseRed blood cell productionSweat gland activityGrowth of new alveoli
2. 2

   Which describes cardiovascular drift?

   Heart rate falling as the body coolsStroke volume rising as sweat is lostBreathing frequency rising in the heatFalling stroke volume with a rising heart rate
3. 3

   Which response increases heat loss from the skin?

   Closing of the sweat glandsVasodilation of skin arteriolesShivering of skeletal muscleVasoconstriction of skin arterioles

+ 12 more questions in the game.

1. 1

   What is the main reason performance falls at altitude?

   Blood carries more carbon dioxideResting heart rate falls sharplyLess oxygen reaches the working musclesThe air is much hotter
2. 2

   What is the role of sweat on the skin?

   It blocks heat from the sunIt keeps the skin warmIt cools the body as it evaporatesIt raises core temperature
3. 3

   What is the effect of vasoconstriction of skin arterioles?

   Less heat lost from skinFaster sweat productionMore heat lost from skinA fall in core temperature

+ 11 more questions in the game.

1. 1

   True or false: a fall in plasma volume contributes to cardiovascular drift.

   a fall in plasma volume contributes to cardiovascular drift.
2. 2

   Which is the effect of dehydration on the blood in the heat?

   Plasma volume falls, so stroke volume fallsPlasma volume rises, so stroke volume risesVenous return rises, so stroke volume risesBlood thins, so heart rate falls
3. 3

   A cyclist trains at altitude for three weeks. Which blood change is expected?

   A higher red blood cell countFewer capillaries in muscleLower haemoglobin levelFewer red blood cells

+ 12 more questions in the game.