Question

Describe the diaphragm, mediastinum, thoracic cavity, pleural membranes, intrapleural space, lung lobes

a) Muscle, Space, Cavity, Membranes, Lobules
b) Membrane, Cavity, Space, Muscle, Lobes
c) Thorax, Space, Membranes, Cavity, Lobules
d) Cavity, Muscle, Space, Membranes, Lobes

Answer 1

The diaphragm is a muscle that controls breathing. The thoracic cavity houses the lungs and other organs. The pleural membranes surround the lungs, and the lung lobes are the different sections of the lungs.

Step-by-step explanation:

The diaphragm is a dome-shaped muscle located at the base of the lungs and thoracic cavity. It contracts and flattens during inspiration, increasing the volume inside the pleural cavities. The mediastinum is the region between the lungs that contains the heart and other structures. The thoracic cavity is the space within the rib cage that houses the lungs and other thoracic organs. The pleural membranes are serous membranes that surround the lungs and consist of two layers: the visceral pleura and the parietal pleura. The intrapleural space is the space between these two layers. The lung lobes are the different sections of the lungs: the right lung has three lobes (superior, middle, and inferior lobes), while the left lung has two lobes (superior and inferior lobes).