Anatomy of the Lymphatic and Respiratory Systems BIOL 204 - Week 8 Lab Anatomy of the Lymphatic and Respiratory Systems

Objective 1 Gross Anatomy of the Lymphatic System The lymphatic system includes: Lymph capillaries Lymphatic vessels Lymphatic trunks Lymphatic ducts Lymph nodes Lymphoid organs: spleen thymus gland tonsils

The thoracic duct of the cat may be seen lying parallel to the thoracic aorta in the thoracic cavity

Cat - Spleen

Cat Lymph Node

Objective 2 Lymph Node Anatomy

A Simplified Diagram ………..

Objective 3 Structures of the Respiratory Tract A/B. Structure of/associated with the nasal cavity/pharynx:

Frontal Sinus Conchae Vestibule Hard Palate Tongue Lingual Tonsil Epiglottis Sphenoidal Sinus Opening to Auditory Tube in Nasopharynx Soft Palate

Perpendicular Plate of the Ethmoid 7. Vomer 3. Superior Nasal Concha 4. Middle Nasal Concha 5. Inferior Nasal Concha

b. Paranasal Sinuses: ethmoid sphenoid frontal maxillary

D. Structures of the Larynx:

E. Structures of the Lungs/Bronchial Tree

The Pleura

Objective 4 Histology of the Trachea and Lung Identify the pseudostratified ciliated epithelium, the hyaline cartilage and smooth muscle (if visible)

Tracheal Epithelium

A lower magnification – tracheal cartilage

Identify bronchioles, alveolar sacs, alveolar ducts, bronchi and alveoli

Can You Tell The Difference?????

Objective 5 Cat Dissection

Larynx (Thyroid Cartilage) Trachea Lung

Right Pleural Cavity

Heart 6. Left Anterior Lobe of the Lung                                                           Heart 6. Left Anterior Lobe of the Lung Thymus Gland 7. Left Middle Lobe of the Lung Right Anterior Lobe of the Lung 8. Right Mediastinal Lobe of the Lung Right Middle Lobe of the Lung 9. Diaphragm Right Posterior Lobe of the Lung 10. Left Posterior Lobe of the Lung