PRAC.26 Flashcards
lungs pericardium topography of the mediastinal organs
Pericardium surrounds…
- Heart
- Initial parts:
- Aorta
- Tr. pulmonales
- Terminal parts:
- Vv. caevae
- Vv. pulmonales
What moistens the opposing sides of the pericardium and the heart?
Liquor pericardii

Dorsal mediastinum
- Above heart

Left caudal lobe

Left pulmonary ligament

Middle mediastinum
- Contains the heart

Left cranial lobe, caudal part

Pulmonary pleura

Fibrous pericardium

Serous pericardium

Pericardiac pleura
Definition of mediastinum
Partition, separating the left and right pleural cavities
The pericardium encloses which space?
Pericardial cavity

Pericardial cavity

Ventral mediastinum
- Under the heart

Costal pleura

Right middle lobe

Plica venae cavae

Accessory lobe

Right caudal lobe

Endothoracic fascia

Costal pleura
List the lobes of the canine lungs
-
Left lung:
- Cranial lobe
- Cranial part
- Caudal part
- Caudal lobe
- Cranial lobe
-
Right lung:
- Cranial lobe
- Middle lobe
- Caudal lobe
- Accessory lobe

Middle Lobe

Accessory Lobe

Right Cranial Lobe

Right Caudal Lobe
Where is the Accessory Lobe found?
In the Mediastinal Recess
Which ligament secures the pericardium to the thorax
The Phrenicopericardiac ligament
Pericardial space between:
- Aorta,
- Pulmonary trunk
- Atrial wall
Transverse pericardial sinus
Pericardial space between:
- Left pulmonary veins
- Right pulmonary veins
- Left atrium
Oblique pericardial sinus
Visceral layer enveloping the first part of the large arteries and veins of the heart
Vaginae serosae arteriorum et venarum
Give the varieties of thoracic pleura
- Diaphragmatic pleura
- Pulmonary pleura
- Mediastinal pleura
- Costal pleura

Diaphragmatic Surface

Costal Surface

Pulmonary Ligament
Give the Surface

Mediasternal Surface / Visceral Surface

Basal margin

Acute border
- [Ventral border]
- Contains cardiac incisure

Obtuse border
- [Dorsal border]
Which lung is larger?
Right

Pulmonary hilius
33
Aortic impression
34
Oesophageal impression
1
Sulcus venae cavae caudalis
- Found between right:
- Accessory lobe
- Middle lobe
- Caudal lobe
Pathway of the bronchial veins
Oxygenated blood travels:
From lungs via bronchial veins → Right azygous vein
Pathway of the bronchoesopageal artery
From thoracic aorta to lungs
Location of cranial mediastinum
Cranial to the heart
Location of caudal mediastinum
Caudal to the heart
16

Thymus
- By thoracic inlet
- Only remnants found in adult dogs
Pleural sacs which apex out of the cranial thoracic inlet
Cupula

Costodiaphragmatic recess

Lumbodiaphragmatic recess

Costomediastinal recess

Cupula

Costomediastinal recess

Left lobe, cranial part

Left lobe, caudal part

Caudal lobe
26
Mediastinal recess
- Acts as a pocket for the accessory lobe of the right lung
- Evagination of the right pleural cavity
- Between caudal mediastinum and plica venae cavae
24

Cavum mediastini serosum
- The serous cavity of the mediastinum
- Right side of oesophagus
- Extension of bursa omentalis