The exchange of gases (O2 & CO2) between the alveoli & the blood occurs by simple diffusion: O2 diffusing from the alveoli into the blood & CO2 from the blood into the alveoli. Diffusion requires a concentration gradient. in the alveoli must be kept at a lower lever than in the blood. We do this, of course, by breathing - continuously bringing fresh air (with lots of O2& little CO2) into the lungs & the alveoli. Breathing is an active process - requiring the contraction of skeletal muscles.
Quick Answer. During a rooster injection on a knee, the doctor cleans an injection site near the kneecap, inserts a needle and withdraws any extra fluid from the knee area, and then through the same needle injects a solution containing hyaluronic acid, a substance obtained from rooster combs, into the knee joint, according to WebMD.
Joint injection is probably the most widely used and effective treatment for a horse with clearly identified problems in his lower hock joints. The injection puts anti-inflammatory agents directly into the space between the bones of the sore joints.ock Fusion. Your horse doesn't actually need his distal hock joints to use his leg. As DJD advances, the bones sometimes fuse to each other naturally, usually leaving him more comfortable. As a last resort in an advanced case, you may want to consider a procedure to fuse the affected joints.