Thorax

Question 1

A _____ is characterized by the accumulation of chyle within the thoracic cavity, is a relatively uncommon disease that affects dogs and cats.

Answer 1

chylothorax (or chyle leak)

Question 2

_____ is a birth defect in the heart. It is caused by incomplete changes in the heart’s circulation when a dog or cat is born.

Answer 2

Patent Ductus Arteriosus (PDA)

Question 3

_____ is a congenital vascular abnormality which can cause regurgitation in young dogs. Vascular ring anomaly in dogs.

Answer 3

Persistent Right Aortic Arch

Question 4

Body region between the neck and abdomen

Answer 4

The Thorax

Question 5

Name 5 boundaries of the thoracic cavity

Answer 5

1. Thoracic vertebrae
2. Ribs and costal cartilages w/intercostal muscles
3. Sternum
4. Thoracic inlet
5. Diaphragm

Question 6

The principle muscle of inspiration

Answer 6

Diaphragm

Question 7

Diaphragm:

• Musculotendinous partition
• It is roughly _____ cranially
• Ventrally it is _____-shaped.
• It has two _____ that are dorsally positioned.
• 4 openings

Answer 7

Convex cranially

Dome-shaped dorsally

Two crura

Question 8

3 openings of the diaphragm

Answer 8

1. Aortic hiatus
2. Esophageal hiatus
3. Caval foramen

Question 9

Label A, B and C

Answer 9

A: Aorta via aortic hiatus

B: Esophagus via esophageal hiatus

C: Caudal vena cava via caval foramen

Question 10

Label A-H

Answer 10

A: Right cruz

B: Left cruz

C: Aortic hiatus

D: Esophageal hiatus

E: Caval foramen

F: Costal part

G: Central tendon

H: Sternal part