The function of the respiratory system is to deliver air to the lungs. Oxygen in the air diffuses out of the lungs and into the blood, while carbon dioxide diffuses in the opposite direction, out of the blood and into the lungs.Respiration includes the following processes: Pulmonary ventilation is the process of breathingâinspiration (inhaling air) and expiration (exhaling air).xternal respiration is the exchange if oxygen and carbon dioxide between the blood and air in the lungs, and internal resparation is the exchange of gases between blood cells of the body.
Boxes can be painted or stained with a light color on the outside and left natural on the inside. Birdhouses for Eastern Bluebirds should be approximately 4 x 4 inches to 5 x 5 inches with entry holes that are either 1 inch round holes, 1 3/8 x 2 vertical oval holes or 1 1/8 inch horizontal slot entrances.
Tips. 1  A roof can be added to a bird table for extra shelter. 2  Keep bird tables clean. 3  Choose a quiet location, away from pets, to place the bird table. 4  Over time, you'll learn how much food to leave out for the birds, gauging this from what is left uneaten or how quickly the birds feed.or this simple wooden bird table, you'll need: 1  1 piece of wood about 30 x 50cm (12 x 20 inches) (just a suggested size), approximately 0.5 to 1cm/ 1/2 inch thick (table top piece). 2  Four slim pieces of wood about 1cm/2 inches high to form a rim on the table top piece.