The right lung is shorter and wider than the left lung, and the left lung occupies a smaller volume than the right. the cardiac notch is an indentation on the surface of the left lung, and it allows space for the heart (figure 22.2.1). the apex of the lung is the superior region, whereas the base is the opposite region near the diaphragm. the. The diaphragm is a thin skeletal muscle that sits at the base of the chest and separates the abdomen from the chest. it contracts and flattens when you inhale. this creates a vacuum effect that.
The heart is located in the thoracic cavity medial to the lungs and posterior to the sternum. on its superior end, the base of the heart is attached to the aorta, pulmonary arteries and veins, and the vena cava. the inferior tip of the heart, known as the apex, rests just superior to the diaphragm. The diaphragm is an unpaired, dome shaped skeletal muscle that is located in the trunk. it separates the thoracic and abdominal cavities from each other by closing the inferior thoracic aperture. the diaphragm is the primary muscle that is active in inspiration. contraction of the muscle facilitates expansion of the thoracic cavity. Organs. the chest is the area of origin for many of the body’s systems as it houses organs such as the heart, esophagus, trachea, lungs, and thoracic diaphragm. the circulatory system does most. The base of the lungs is concave to follow the contour of the diaphragm. the left lung is slightly smaller than the right lung because 2 3 of the heart is located on the left side of the body. the left lung contains the cardiac notch, an indentation in the lung that surrounds the apex of the heart. each lung consists of several distinct lobes.
Organs. the chest is the area of origin for many of the body’s systems as it houses organs such as the heart, esophagus, trachea, lungs, and thoracic diaphragm. the circulatory system does most. The base of the lungs is concave to follow the contour of the diaphragm. the left lung is slightly smaller than the right lung because 2 3 of the heart is located on the left side of the body. the left lung contains the cardiac notch, an indentation in the lung that surrounds the apex of the heart. each lung consists of several distinct lobes. In order to understand how that happens, it is necessary to understand the anatomy and physiology of the heart. location of the heart. the human heart is located within the thoracic cavity, medially between the lungs in the space known as the mediastinum. figure 19.2 shows the position of the heart within the thoracic cavity. The cardiac notch is an indentation on the surface of the left lung, and it allows space for the heart (figure 22.13). the apex of the lung is the superior region, whereas the base is the opposite region near the diaphragm. the costal surface of the lung borders the ribs. the mediastinal surface faces the midline.
In order to understand how that happens, it is necessary to understand the anatomy and physiology of the heart. location of the heart. the human heart is located within the thoracic cavity, medially between the lungs in the space known as the mediastinum. figure 19.2 shows the position of the heart within the thoracic cavity. The cardiac notch is an indentation on the surface of the left lung, and it allows space for the heart (figure 22.13). the apex of the lung is the superior region, whereas the base is the opposite region near the diaphragm. the costal surface of the lung borders the ribs. the mediastinal surface faces the midline.
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