A, B, C, D, E) Key Terms
physiology - answerstudy of the way that the body responds to exercise and training
calcium - answera mineral essential for bone growth and found in a wide range of
foods including milk, chesse, nuts and beans
osteoblasts - answerspecialised bone cells that build new bone tissue
osteoclasts - answerlarge nucleated cells that destroy bone cells, reabsorb calcium
and play a major role in bone remodelling
anticipatory rise - answera minor increase in breathing rate prior to exercise
alveolar ventilation - answertidal volume minus dead space (air that remains in
tracgea, bronchi, etc)
partial pressure - answerpressure applied by a single gas in a mixture of gases
haemoglobin - answeroxygen transporting component of red blood cells
lactate - answerproduct of lactic acid which occurs in blood
blood pH - answermeasure of acidity or alkalinity of a solution
systole - answerduring which cardiac muscle contracts
diastole - answerduring which cardiac muscle relaxes
BTEC Sport Level 3: Unit 1 (Learning Aim
A, B, C, D, E) Key Terms
, neurotransmitters - answerchemicals used to carry signals or information between
neurons and cells stroke volume - answervolume of blood pumped out of the heart's
left ventricle per beat
cardiac cycle - answerthe sequence of events that take place during a single
heartbeat
systolic pressure - answerpressure exerted in the arteries when the heart contracts
diastolic pressure - answerpressure exerted in the arteries when the heart relaxes
and fills with blood
prehypertension - answermeans someone does not have high blood pressure now
but they are likely to develop it in the future
arterial blood - answerbright red in colour due to high concentrations of oxygen
venous blood - answerdarker red than arterial blood due to high concentrations of
carbon dioxide
proprioceptors - answersensory receptors found in muscle tissue, tendons and joints
which tell the brain about the physical state and position of a mucle or joint
dehydration - answerdepletion of fluids that can impede thermoregulation and
cause a rise in core body temperature
mitochondria - answerthe organelles within cells in the body where aerobic
respiration takes place
minute ventilation - answeralso known as minute volume = tidal volume x
frequency of breaths per minute
cellular adaptions - answerchanges within the cell structure
BTEC Sport Level 3: Unit 1 (Learning Aim
A, B, C, D, E) Key Terms