Do not write outside the
box
9
Figure 12 shows exchange surfaces in the lungs.
Figure 12
Oxygen
Cell at lung surface
Blood vessel
Red blood cell
(transports oxygen)
09
1
Explain how one feature shown in Figure 12 increases the rate of oxygen uptake
by the blood.
[2 marks]

Red blood cells - help in transporting oxygen other all the body parts. _ halp to increase the tamprecature in the all the body parts

i would have to say autosomal

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.