Learning Aim D

What % of the air is oxygen?

• 20

• 21

• 22

• 23

What causes an increase breathing rate at high altitude?

• chemoreceptors detect a decrease in oxygen pressure

• thermoreceptors detecting a change in temperature

• baroreceptors detecting a change in blood pressure as altitude increases

• Rapid contraction of muscles due to temperature drop causes fatigue

Which of the following athletes would train at high altitude?

• 10,000m runner

• 200m sprinter

• Triple jumper

• Cross-country Skier

What is hypoxia?

• Resting heart rate above 100bpm

• Insufficient levels of oxygen for tissues in the body

• Impaired gaseous exchange

• Reduction in capillary network surrounding muscles

Identify symptom of altitude sickness...

• Lactic acid accumulation

• Nausea

• Memory loss

• Immobility

Which of the following is not an adaptation to altitude training?

• Increased red blood cell production

• Increased capillarisation

• Increased haemoglobin concentration

• Increased bone density

Which part of the brain controls temperature regulation?

• Medulla Oblongata

• Cerebellum

• Hypothalamus

• Cerebrum

What is the body's core temperature (degrees C)?

• 36

• 37

• 38

• 39

Identify the methods of heat loss below...

• Vasoconstriction

• Conduction

• Radiation

• Shivering

What is the definition of convection?

• water/air flowing over skin carrying away body heat

• moving heat to or from the body from surrounding through direct contact

• transferring heat from the body to surrounding without direct contact

• water vaporisation lost through sweating and breathing