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Both the lungs and the skin serve as respiratory organs in amphibians. The ventilation of the lungs in amphibians relies on positive pressure ventilation. Muscles lower the floor of the oral cavity, enlarging it and drawing in air through the nostrils into the oral cavity. With the nostrils and mouth closed, the floor of the oral cavity is then ...
The lungs are the largest organs in the lower respiratory tract. The lungs are suspended within the pleural cavity of the thorax. The pleurae are two thin membranes, one cell layer thick, which surround the lungs. The inner (visceral pleura) covers the lungs and the outer (parietal pleura) lines the inner surface of the chest wall. This ...
Choosing a dog at any age means being realistic about lifestyle, needs and disposable income. The best dogs for seniors will depend entirely on how active the future dog owner is, what type of ...
The lungs stretch from close to the backbone in the rib cage to the front of the chest and downwards from the lower part of the trachea to the diaphragm. [1] The left lung shares space with the heart, and has an indentation in its border called the cardiac notch of the left lung to accommodate this.
For lonely seniors, dogs can also be wonderful companions. But there are some things to think about before becoming a later-in-life dog owner. “It is good to keep in mind several factors when ...
From Our Partners: Learn some general factors you should look for in a pet, as well as specific dog breeds that tend to get along with older adults
Human diaphragm, transverse view from below, showing openings There are a number of openings in the diaphragm through which structures pass between the thorax and abdomen. There are three large openings — one for the aorta ( aortic hiatus ), [ 2 ] one for the esophagus ( esophageal hiatus ), and one for the inferior vena cava (the caval ...
Research has shown time and time again that pet ownership has a wide range of important benefits for older adults, from lowering blood pressure and decreasing loneliness to improving cognitive ...