Generate Quiz 6A27087910E51

The oxygen-haemoglobin dissociation curve shifts to the right when blood pH drops, indicating that oxygen has separated from hemoglobin. As a result, hemoglobin’s affinity for oxygen is reduced.

The production and secretion of mucus is the main job of goblet cells.

The respiratory passageway is unrelated to the pleural cells that line the pleural cavity. The alveoli are lined with surfactant cells, which release surfactant, a crucial substance whose primary job is to lower surface tension. Goblet cells and ciliated cells are the two types of tracheal cells. Tracheal cells include ciliated cells in addition to those that secrete mucus.

Your body uses more oxygen and generates more carbon dioxide when you exercise and your muscles work harder. Your breathing must increase from around 15 times per minute (12 liters of air) when you are at rest to about 30 to 40 times per minute (100 liters of air) when you are exercising in order to meet this additional demand.

The hemoglobin does not bind oxygen as well if the blood’s pH is lower than normal (normal physiological pH is 7.4). In other words, the Bohr effect states that the lower the pH, the more hydrogen ions there are, the higher the carbon dioxide level, and the lower the hemoglobin’s affinity for oxygen. Conversely, a higher pH results in a lower concentration of H+ ions, a lower level of carbon dioxide, and a greater affinity for oxygen by hemoglobin.

An agent that lowers the surface tension between two media is called a surfactant. A thin layer of fluid called pulmonary surfactant reduces the surface tension between the gaseous and aqueous interphase in the lungs. It is made up of proteins and lipids.

A genetic (inherited) condition known as cystic fibrosis (CF) results in the accumulation of thick, sticky mucus in organs such as the pancreas and lungs. Thick mucus obstructs the airways in CF patients, making breathing challenging. The pancreatic duct and lungs are both obstructed, which stops the digestive enzymes from being secreted. Because these enzymes begin to break down the pancreas, their buildup inside the organ is harmful. Furthermore, mucus in males obstructs the sperm duct, making the male sterile.

Nasal cavities are the hollow spaces inside the nose, while nostrils are the external openings. Therefore, choice C is the right one.

Since there are two types of bronchitis—acute and chronic—option A is the right one. A virus is typically the cause of acute bronchitis. One kind of chronic lung disease is chronic bronchitis.

The pleural membrane would eventually be damaged as a result, which would upset the gas pressure balance and cause the lungs to collapse. Consequently, the man would eventually pass away.