Quiz 4 Flashcards
(20 cards)
Cranial Epigastric Artery
- Terminal branch of the internal thoracic artery
- Emerges from the thorax between the costal arch and the sternum
- Passes caudally on the deep surface of rectus abdominus
- Gives rise to the cranial superficial epigastric
Cranical Superficial Epigastric Artery
- Perforates rectus abdominis and runs caudally on its external surface
- Supplies the skin over the rectus abdominis and the caudal thoracic and cranial abdominal mammae
Pleurae
- Serous membranes that cover the lungs and line the walls of the thorax
- Form right and left sacs that enclose the pleural cavities which consists of visceral and parietal parts
Pulmonary/Visceral Pleura
- Closely attaches to the surfaces of the lung
Parietal Pleura
- Attached to the thoracic wall by the endotheracic fascia
- Divided into costal, diaphragmatic, and mediastinal parts
Costal Pleura
- Part of the Parietal Pleura
- Covers the inner surfaces of the ribs and their associated intercostal and transversus thoracis muscles
Diaphragmatic Pleura
- Part of the Parietal Pleura
- Covers the cranial surface of the diaphragm
Mediastinal Pleurae
- Part of the Parietal Pleura
- Layers that cover the sides of the partition between the two pleural cavities
Mediastinum
- Includes the two mediastinal pleurae
- Encloses the thymus, the lymph nodes, the heart, the aorta, the trachea, the esophagus, the vagus nerves, and other nerves and vessels
Pericardial Mediastinal Pleura
- Portion covering the heart
Cranial Part of the Mediastinum
- Lying cranial to the heart
Middle Part of the Mediastinum
- Contains the heart
Dorsal Portion of the Mediastinum
- Dorsal to the heart
Ventral Portion of the Mediastinum
- Ventral to the heart
Caudal Part of the Mediastinum
- Caudal to the heart
- Thin
- Attaches to the diaphragm far to the left of the median plane
Plica Venae Cavae
- Loose fold of pleura derived from the right caudal mediastinal portion of the pleural sac that surrounds the caudal vena cava
Root of the Lung
- Composed of pleura and the bronchi, vessels, and nervers entering the lung
Pulmonary Ligament
- Between the caudal lobe of the lung and the mediastinum at the level of the esophagus
Thymus
- Bilobed, compressed structure situated in the cranial mediastinum
- when maximally developed the caudal part of the thymus is molded on the cranial surface of the pericardium
Internal thoracic artery
- Leaves the subclavian artery, courses ventrocaudally in the cranial mediastinum, and disappears deep to the cranial border of the transversus thoracic muscle.
- It supplies many branches to surrounding structures - the phrenic nerve, the thymus, the mediastinal pleurae, and the dorsal intercostal spaces.