Intro to cardiovascular and respiratory systems

Question 1

What organs are within thoracic cavity?

Answer 1

Contains the heart, lungs and other associated structures

Question 2

What is the entrance to the thoracic cavity called and what is it formed by?

Answer 2

• Thoracic inlet
• Formed by the first pair of ribs and thoracic vertebrae

Question 3

What is the caudal border filled with in the thoracic cavity?

Answer 3

Filled with the diaphragm and ventrally sternum

Question 4

What is the thoracic cavity and thoracic organs lined with?

Answer 4

• Serosa-pleura (serous membrane)
• Connects to underlying fascia

Question 5

What is pleural fluid?

Answer 5

A small amount lubricates the smooth surfaces of the pleura

Question 6

What does the endothoracic fascia attach the pleura to?

Answer 6

Pleura is attached to bony and muscular parts of the thorax by endothoracic fascia

Question 7

How is pleura arranged around the lungs?

Answer 7

• Pleura consists of 2 separate sacs- one surrounding each lung
• Lungs never enter the pleural cavities

Question 8

What type of pleura lines the lungs?

Answer 8

• Visceral (pulmonary) pleura
• In contact with the lungs

Question 9

What type of pleura sac lines the heart?

Answer 9

Pericardial sac

Question 10

What type of pleura lines the thorax?

Answer 10

Parietal pleura

Question 11

What are the divisions of the parietal pleura?

Answer 11

• Costal pleura
• Diaphragmatic pleura
• Mediastinal pleura

Question 12

What part of the thorax does the costal pleura line?

Answer 12

Lines the ribs

Question 13

What part of the thorax does the diaphagmatic pleura line?