I guess that is:
Within the capillaries of the lungs, gases are exchanged by diffusion; O2 diffuses from the alveolus to the bloodstream and CO2 diffuses from the bloodstream to the alveolus.
The sympathetic nervous system is a part of the autonomic nervous system that carries stress responses or "flight or flight" responses that involves feelings of rush. The activation of sympathetic nervous system therefore increases the heart rate. The parasympathetic nervous system is another part of the autonomic nervous system which is responsible for "rest and digest" responses that involves feelings of relaxation. The activation of the parasympathetic nervous system decreases the heart rate.
I believe that would be option B inguinal and popliteal.
Hope it helps!
Energy flow<span> in a </span>food chain<span> </span>starts with<span> the producer organisms through</span>
<span>Good Morning!
The use of skin graft is necessary for a number of reasons. Some treatments use this procedure temporarily, just to prevent infection or the like, while other treatments use it permanently to replace a completely lost area of the skin.
One of the functions, in both cases, is to protect the area from possible infections.
Hugs!</span>
