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

Objective 3 Structures of the Respiratory Tract 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 carina

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

Objective 5 Cat Dissection 7 lobes

Right Pleural Cavity

Right Anterior Lobe 1. Left Anterior Lobe                                                           Right Anterior Lobe 1. Left Anterior Lobe Right Middle Lobe 2. Left Middle Lobe Right Mediastinal Lobe 3. Left Posterior Lobe Right Posterior Lobe