Dead space volume
Bronchioles are the passages that air travels through to get to the alveoli where air exchange occurs. Bronchioles are part of the respiratory systems and are branches of the bronchi.
Air enters the pig's respiratory tract through the nasal passages, where it is filtered and warmed. From the nasal passages, the air moves into the pharynx, then passes through the larynx into the trachea. The trachea branches into the bronchi, which lead into the lungs, where the air further divides into smaller bronchioles and eventually reaches the alveoli for gas exchange.
The main air passages in the respiratory system are the trachea (windpipe), bronchi (left and right branches from the trachea), bronchioles (smaller branches from the bronchi), and alveoli (tiny air sacs where gas exchange occurs). These passages facilitate the movement of air into and out of the lungs, allowing for oxygen to be absorbed and carbon dioxide to be expelled.
The sounds made by air rushing through the large respiratory passages are referred to as bronchial sounds. They are best heard in the mid-back.
The nasal passages.nasle cavityNasal passages
True. As air moves through the mouth and nasal passages, it is warmed and moistened by the respiratory mucosa lining these passages before reaching the lungs. This helps to protect the lungs and optimize the exchange of oxygen and carbon dioxide.
diffusion
The layer of cells in the air passages that clean the air before it reaches the lungs is best classified as the respiratory mucosa or respiratory epithelium. These cells are equipped with cilia and mucus that trap and remove dust, particles, and pathogens from the inhaled air, helping to protect the lungs from potential harm.
The air is warmed and moistened in the respiratory system by passing through the nasal cavity, where it comes into contact with mucus and blood vessels. The mucus helps to humidify and warm the air before it reaches the lungs, creating an optimal environment for gas exchange.
Air passages that are less than 0.5 mm in diameter are terminal bronchioles, whereas respiratory bronchioles are under 1 mm in diameter.
The respiratory system is responsible for providing gas exchange between the blood and the air. This process occurs in the lungs where oxygen is taken up by the blood and carbon dioxide is released from the blood into the air through the alveoli.
Air entering a tracheostomy would not be warmed, filtered for removal of microorganisms and dust particles, or humidified by the nasal passages or oropharynx. The patient may experience irritation around and inside the tracheostomy opening (due to dryness), coughing, and respiratory infections.