Citation Revision - respiratory and circulatory

Question 1

Alexander, 2009

Answer 1

breath per stride in horses

piston action

Question 2

Kline & Foreman, 1991

Answer 2

circulation has a significant correlation with the performance
the better the circulation, the better the performance

Question 3

Inside Natures Giants, 2011

Answer 3

4 breathes evry 2 seconds
hold chest cavity out (and ribs (18 ribs))
breath : stride = 1:1
140 brp minute (gallop)
40 litres of air per sec (at a gallop)
straighten respiratory tract to let out air

4 bp second
25-30 bpm at rest
240 bpm at maxiumum exercise
adrenaline causes contraction of the spleen (1/3 of blood kept here) to initiate blood doping
Example:
- red terror (phar lap) = over 6Kg heart - nearly double the size of a standard horse
won 35 of 51 races

Question 4

Noordergraaf, 1978

Answer 4

covers: 
anatomy
function of circulatory system
describes circulatory system
the heart
arteries
veins

Question 5

Bramble and Carrier, 1983

Answer 5

synchronized breathing with running in mammals