Respiratory Models & Histology Lab Book Page 339

Fig. not in your lab book

The Upper Respiratory Structures Nasal Cavity –Contains the superior, middle and inferior nasal conchae Pharynx –Divided into three sections the nasopharynx, oropharynx and laryngopharynx

Lab Book page 340

Sagittal Head Superior Nasal Conchae Middle Nasal Conchae Inferior Nasal Conchae External nares

Sagittal Head Frontal Sinus Sphenoid (Sphenoidal) Sinus Nasopharynx Oropharynx Laryngopharynx

Sagittal Head Larynx – Epiglottis Larynx – Thyroid Cartilage Esophagus

The Lower Respiratory Structures Larynx –Made of cartilage and ligaments – 3 Major cartilages of the larynx: Thyroid cartilage Cricoid cartilage Epiglottis –Contains vocal cords, which surround an opening called the glottis

Lab Book page 342

Larynx Anterior View Epiglottis Thyroid Cartilage Laryngeal Prominence Cricoid Cartilage Tracheal Cartilage Hyoid Bone

Larynx Superior View Epiglottis Glottis (hole) Vocal Cords Arytenoid Cartilage

Trachea Windpipe – brings air to/from lungs Contains tracheal cartilages which protect the airway and prevent collapse Fig. not in you lab book

Bronchial Tree Fig. not in you lab book

Thoracic Model – Internal View Right Brachiocephalic vein Left Brachiocephalic vein Superior Vena Cava Esophagus Aortic Arch Pulmonary Arteries Pulmonary Veins

Thoracic Model – Internal View Trachea Primary bronchus Secondary bronchus Tertiary Bronchus

Thoracic Model – External View Right Lung Superior Lobe Right Lung Middle Lobe Right Lung Inferior Lobe Diaphragm Left Lung Superior Lobe Cardiac notch of left lung Left Lung Inferior Lobe

2 Respiratory Slides 1. Slide of the TRACHEA 2. Slide of a BRONCHIOLE

SLIDE OF TRACHEA – lab book pg. 345 Fig. 6 LUMEN of Trachea Pseudostratified Ciliated Columnar Epithelium Hyaline Cartilage Goblet Cells

Close-up of Trachea showing a Goblet Cell Goblet Cell

Bronchiole & Alveoli Fig. not in you lab book

Slide of a Bronchiole Bronchiole (notice it is filled with air so it is empty inside) Alveoli or Alveolar Sacs Simple Squamous Epithelia Blood Vessel (notice it is filled with RBC’s) Lab Book page 346 Fig. 7 (b) Alveoli or Alveolar Sacs

Also known as a septal cell: produces SURFACTANT which reduces the surface tension in the alveoli Fig. not in you lab book

Practice Slides!!!

Slide of a Bronchiole

Thoracic Model – External View

Thoracic Model – Internal View

Larynx Anterior View

Larynx Superior View

Sagittal Head

5 basic functions of the respiratory system: 1.Provide an extensive area for gas exchange between air and blood 2.Move air to and from the exchange surfaces of the lungs 3.Protect respiratory surfaces from dehydration or other environmental variations to prevent invasion of pathogens 4.Produce sounds 5.Provide olfactory sensations to the CNS