Respiratory System

CATS Respiratory system on cat: –Diaphragm –Lungs –Trachea –Larynx –Bronchus

Larynx (Esophagus behind) Trachea Lungs (visceral pleura is shiny surface) Diaphragm

Trachea Bronchi

Heart Lungs Diaphragm

MODELS Upper Respiratory models: External nares Lingual frenulum Nasopharynx Oropharynx Laryngopharynx Uvula Epiglottis (“leaf-like” flap that covers the glottis) Glottis (this is a hole, so the question has to be something like “Name this opening”) Uvula Thyroid gland Palatine tonsil (tonsils are members of the immune system) Pharyngeal tonsil

External nares

Nasopharynx Uvula

Pharyngeal tonsil Palatine tonsil Epiglottis Uvula

Nasopharynx Oropharynx Laryngopharynx Esophagus starts here

Trachea model –Hyoid bone –Trachealis muscle –Arytenoid cartilage –Cricoid cartilage –Thyroid cartilage –Glottis (opening hole to the trachea) –Epiglottis (“leaf-like” flap that covers glottis) –Thyroid gland

Hyoid bone Epiglottis Thyroid cartilage Glottis (hole) Arytenoid cartilage Cricoid cartilage Trachealis muscle Thyroid gland

Lung models: –Hyoid bone –Thyroid cartilage –Cricoid cartilage –Trachealis muscle –Thyroid gland –Trachea –Lung –Bronchi

Hyoid bone Thyroid cartilage Cricoid cartilage Trachealis muscle Thyroid gland Trachea Lung

Trachea Bronchi Pulmonary artery (blue) Pulmonary vein (red)

Trachea Bronchi

SLIDE: LUNG Alveolus (Functional unit of the lung)

Lung Alveoli

Lung

Bronchiole Alveoli