GCSE pe 2

Question 1

how does the body adapt to physical activity (muscular -skeletal system)

Answer 1

muscle hypertrophy,
increased strength of ligaments and tendons,
increased bone density

Question 2

what happens to the heart rate during sport

Answer 2

heart rate increases during sport to pump more oxygen and nutrients to the working muscles as energy

Question 3

deffine cardiac output

Answer 3

the amount of blood ejected from the heart each minute

Question 4

why does stroke volume and cardiac output increase during physical activity

Answer 4

to increase the amount of blood carrying oxygen and nutrients to the working muscles as energy.

Question 5

.why does breathing rate and breathing depth increase during physical activity

Answer 5

to take in as much oxygen as possible to get to the working muscles as an energy source

Question 6

how does the body adapt to physical activity

cardio-respiratory system) (10

Answer 6

cardiac hypertrophy 
slower resting heart rate 
quicker recovery time 
increased cardiac output 
increased stroke volume 
decreased blood pressure 
increased lung capacity 
increased capilerisation
increased alvioli production
increased red blood cell production