Introductionâ¢ Oxygen and carbon dioxide diffuse between the alveoli and pulmonary capillaries in the lungs, andbetween the systemic capillaries and cells throughout the body.â¢ The diffusion of these gases, moving in opposite directions, is called gas exchange.Page 2. External respiration occurs within the lungs, as carbon dioxide diffuses from the pulmonary. capillaries into the alveoli, and oxygen diffuses from the alveoli into the pulmonary. capillaries. â¢ Oxygen-rich blood leaves the lungs and is transported through the pulmonary veins to the. left side of the heart.
I have about 12 Bottle Brush planted on my property, beginning approx 8 yrs ago. I love this tree, and mine here in the NW part of Florida bloom at least 3 times a year and sometimes 4 times. Mine are about 18' - 20' tall, and about 25' - 30' wide. I contribute its size to bottom up pruning.
Bottlebrush plants (Callistemon spp.) get their name from the spikes of flowers that bloom at the ends of the stems, bearing a strong resemblance to a bottle brush. Grow them as shrubs or small trees that grow up to 15 feet. Most bottlebrush varieties bloom over a long summer season in shades of red or crimson.