FHC Cat Dissection The Thoracic Cavity

Where To Make The Cut

After You’ve Cut Around The Sternum….

Parietal Pleura

Visceral Pleura

Mediastinum

R & L Main Bronchi Right Bronchus

Pulmonary Artery Pulmonary Artery

Pulmonary Vein

Branch of Pulmonary Artery & Vein Remove a piece of lung tissue (from anywhere!) and search for a branch of both the pulmonary artery (blue) or vein (red) cut in cross section!

Branch of Pulmonary Artery

Branch of Pulmonary Vein

Bronchiole Search through the piece of cat lung that you just removed and check for an empty duct with white walls. This would be a branch of the bronchus - a bronchiole!

Larynx Thyroid Cartilage Cricoid Cartilage

Hyoid Bone

Vocal Cords (Larynx Cut)

•The glottis is the space between the vocal cords.

The Thyroid Glands Thyroid Gland

Trachea •The tracheal cartilages are reddish- brown.

Esophagus •The best way to find the esophagus is to look behind the trachea!

Parietal Pericardium Parietal Pericardium

Visceral Pericardium Visceral Pericardium

Phrenic Nerve - Right Right Phrenic Nerve The right phrenic nerve is attached to the thoracic post cava.

The left phrenic nerve is embedded in the pleural folds that Phrenic Nerve - Left The left phrenic nerve is embedded in the pleural folds that lead to the diaphragm.

Thymus Gland

HAP Coloring •Color the arterial system of the cat red to receive 10 points. •Color the venous system of the cat blue to receive 10 points. •The coloring sheets are in your dissection instructions.

Major Veins (Blue) of the Upper Thoracic Cavity FHC Cat Dissection Major Veins (Blue) of the Upper Thoracic Cavity

Precava

Azygos Vein Azygos Vein

Intercostal Veins

R & L Brachiocephalic Veins •Both are short and branch quickly!

R & L External Jugular Veins

R& L Subclavian Vein Left Subclavian Vein Right Subclavian Vein

Axillary Vein L Axillary Vein R Axillary Vein

Brachial Vein

Right Subscapular Vein R & L Subscapular Veins Left subscapular Vein Right Subscapular Vein

Internal Thoracic Vein (AKA The Mammary Vein)

Major Arteries (Red!) of the Upper Thoracic Cavity FHC Cat Dissection Major Arteries (Red!) of the Upper Thoracic Cavity

Brachiocephalic Artery (AKA Innominate Artery)

Aortic Arch Aortic Arch

R & L Common Carotid Artery The nerves adhering to the carotid arteries are the vagus nerves.

Right Subclavian Artery (#2)

Right Subclavian Artery - Again R & L Common Carotid Arteries

External Carotid Artery

Lingual Artery

Right Thyrocervical Artery

Axillary Artery Left Axillary Artery Right Axillary Artery

Brachial Artery

Left Subscapular Artery (#11) Note: The Subscapular artery might emerge from the top OR the bottom of the axillary artery. In either case, it leads directly to the scapular undersurface.

Right Subscapular Artery

Left Subclavian Artery

Intercostal Arteries

Remove The Left Lung

Thoracic Aorta

Aorta Passes Through The Diaphragm