The dorsal branches of the thoracic spinal nerves provide innervation to what group of muscles?
Epaxial Muscles
What muscle is located on the inner ventral wall of the thoracic cavity?
Transversus thoracis muscle
What are the thoracic cavity boundaries?
Dorsal-Vertebral column and Longus Coli m.
Lateral-Ribs, Internal intercostal mm., and costal cartilage
Ventral- Sternum and (Transversus thoracis m.)
Caudal- Diaghragm
Cranial- Thoracic inlet
Lateral-Ribs, Internal intercostal mm., and costal cartilage
Ventral- Sternum and (Transversus thoracis m.)
Caudal- Diaghragm
Cranial- Thoracic inlet
What makes up the dorsal border of the thoracic inlet?
1st thoracic vertebra
Longus colli m.
Longus colli m.
If a dog gets a puncture wound through the left thoracic cavity, what will happen to the right and left lungs and why?
The left lung will collapse due to the pressure increase. The right lung will remain in working condition due to the mediastinum separating the two areas.
Where is the cupula pleura located?
It is located at the cranial apex of each pleural sac cranial to the first rib.
In what space does the accessory lobe sit in the thoracic cavity?
The mediastinal recess
What is the junction between costal and diaphragmatic pleurae called?
The line of pleural reflection.
Where is the cardiac notch located in relation to the lungs?
Between cranial and middle lung lobes
What connects the lungs to the mediastinum and what part of the lung does it attach to?
The pulmonary ligament and caudal lobes
Where do you auscltate the lungs?
Cranial part is at the 5th rib/caudal border of triceps brachii m.
Dorsal part is lateral margin of the epaxial muscles
Caudal part is the costochondral junction of 6th rib though middle of 8th rib.
Dorsal part is lateral margin of the epaxial muscles
Caudal part is the costochondral junction of 6th rib though middle of 8th rib.
What lymph nodes are located near the bifurcation of the trachea and principle bronchi?
Tracheobronchial lymph nodes
What structures drain from the cranial mediastinaly lymph nodes?
Structures in the mediastinum and deep muscles at the base of the neck
What structures drain into the tracheobronchial lymph nodes?
Lungs
Mediastinal structures
Part of the diaphragm
Mediastinal structures
Part of the diaphragm
Where do the sternal lymph nodes receive lymph from?
Muscles of ventral chest wall
Diaphragm
Mediastinum
First three pairs of mammary glands
Diaphragm
Mediastinum
First three pairs of mammary glands
In the cat, what type of muscle composes the esophagus?
Skeletal cranially
Smooth in the caudal 1/3
Smooth in the caudal 1/3
