LAB

• How many lobes does the left lung have?


  Two lobes
• What is the function of the bronchi?


  They are the lower end of the trachea that enters the lungs
• What is the diaphragm?


  A muscle separating the abdomen from the thoracic cavity
• What dual role does the pharynx serve?


  It is used for both the respiratory and digestive systems
• Where is the larynx located?


  Between the pharynx and the trachea
• What do the paranasal sinuses do?


  They act as an echo chamber during sound production and give resonance to the voice
• What are bronchioles?


  The smallest of the conducting tubes
• What is the trachea?


  A passageway for air that extends from the pharynx and larynx
• How many lobes does the right lung have?


  Three lobes
• What is the pleural cavity?


  A folded pleural membrane that forms a sac around each lung
• What is the visceral pleura?


  The inner layer of pleura attached to the surface of the lungs
• What is the hilum?


  The entry of structures like the bronchi and pulmonary blood vessels into each lung
• What is the parietal pleura?


  The outer layer of pleura attached to the wall of the thoracic cavity
• What shape are the lungs?


  Cone-shaped
• What is surfactant?


  A fluid produced in the lungs that reduces surface tension within the alveoli
• What is the pleura?


  A double membrane that covers the lungs and lines the thoracic cavity
• What is serous fluid?


  Fluid found between the two layers of the pleura that reduces friction
• What is the mediastinum?


  The area between the right and left lung containing the heart and other structures
• What are alveoli?


  Microscopic air sacs through which gases are exchanged between the lungs and the blood
• What is the pleural space?


  A very narrow, fluid-filled space between the two layers of the pleura
• What is the nasopharynx?


  The superior portion of the pharynx located behind the nasal cavity
• What are pharyngeal tonsils also known as?


  Adenoids
• What is the function of the nasal cavity?


  It warms, filters, and moistens the air as it passes through the nose
• What is the oropharynx?


  The middle portion of the pharynx located behind the mouth
• What does the thyroid cartilage form?


  The Adam's apple
• What is the function of the epiglottis?


  It covers the larynx and trachea during swallowing
• What is the laryngopharynx?


  The inferior portion of the pharynx located behind the larynx
• What are vocal cords?


  Folds of membranous tissue that produce sound through vibration
• What is the glottis?


  The opening between the two vocal cords
• What are lingual tonsils?


  Small mounds of lymphoid tissue located at the posterior of the tongue
• Where are palatine tonsils found?


  On either side of the soft palate in the oropharynx
• What does respiratory rate measure?


  The respiration or breaths per minute
• What happens to blood if too much carbon dioxide is exhaled?


  The blood becomes alkaline
• What is pulmonary ventilation?


  The flow of air between the outside environment and the lungs
• What occurs during hyperventilation?


  Too much carbon dioxide is exhaled
• What occurs during hypoventilation?


  Too little carbon dioxide is exhaled
• What is inhalation?


  The flow of air into the lungs
• What is exhalation?


  The flow of air out of the lungs
• What happens to blood if too little carbon dioxide is exhaled?


  The blood becomes acidic