They are a good choice for relatively desiccated wounds. For exudative wounds, absorptive dressings, such as calcium alginates (eg, Kaltostat [Calgon Vestal], Curasorb [Kendall]) and hydrofiber dressings (eg, Aquacel and Aquacel-AG [Convatec]), are highly absorptive and are appropriate for exudative wounds.
Histoplasmosis can cause a respiratory disease with cough and shortness of breath. The fungal organism causing this disease is present throughout the Midwest but can be concentrated in areas with quantities of bird droppings. Persons acquire the disease by inhalation of the organism from the environment.
The air sacs of birds extend into the humerus (the bone between the shoulder and elbow), the femur (the thigh bone), the vertebrae and even the skull. Birds do not have a diaphragm; instead, air is moved in and out of the respiratory system through pressure changes in the air sacs.Muscles in the chest cause the sternum to be pushed outward. This creates a negative pressure in the air sacs, causing air to enter the respiratory system.n mammals, only one respiratory cycle is necessary. Respiratory cycle of a bird. 1  During the first inspiration, the air travels through the nostrils, also called nares, of a bird, which are located at the junction between the top of the upper beak and the head.