Pharynx
Pharynx: The pharynx is a muscular tube behind the nasal and oral cavities that conducts air to the larynx and food to the esophagus.
Tag Archives: respiratory system
Cartilages of the Larynx
Cartilages of the Larynx: The larynx contains several cartilages, including the thyroid, cricoid, arytenoid, and epiglottis, which support vocal cord function and protect the airway during swallowing.
Gross Anatomy of the Lungs
Gross Anatomy of the Lungs: Each lung has lobes (three on the right, two on the left), a hilum for vessel entry/exit, and surfaces that fit into the thoracic cavity, facilitating gas exchange.
External Nose
External Nose: The external nose is composed of cartilage and bone, covered by skin, and includes the nostrils and nasal bridge, providing a passage for airflow and supporting olfaction.
The Trachea
The Trachea: The trachea, or windpipe, is a rigid tube reinforced with C-shaped cartilage rings that conducts air from the larynx to the bronchi while keeping the airway open.
The Respiratory Zone
The Respiratory Zone: The respiratory zone includes respiratory bronchioles, alveolar ducts, and alveoli, where gas exchange occurs between air and pulmonary capillary blood.