Powerpoint 2

Question 1

What are the four regions of the mediastinum?

Answer 1

• superior
• inferior (anterior, middle, posterior)

Question 2

The _____ is the breast bone at midline of chest.

Answer 2

Sternum

Question 3

What is the vital organ of respiration?

Answer 3

Lungs

Question 4

Circulation of thorax

Answer 4

Esophagus
Branchi
Pericardium
Lungs
Thoracic walls

Question 5

The ____ is subdivisions of the thoracic cavity.

Answer 5

Mediastinum

Question 6

The sternum consists of which three sections?

Answer 6

1. manubrium (top portion that connects to clavicle to form suprasternal notch)
2. body (larger middle section)
3. xiphoid process (small bottom portion)

Question 7

What is the purpose of the thorax?

Answer 7

Protect vital organs within thoracic cavity and prevent collapse of the thorax during inspiration.

Question 8

What is the main respiratory muscle?

Answer 8

Diaphragm

Question 9

____ aids in the exchange of gases.

Answer 9

Trachea

Question 10

The lungs are surrounded by a ____ ____ with fluid in between.

Answer 10

Pleural sac

Question 11

How many lobes does the right lung have?

Answer 11

Three lobes (superior, middle, inferior)

Question 12

How many lobes does the left lung have?

Answer 12

Two lobes (superior and inferior)

Question 13

Drainage of the thoracic cavity is primarily from the ____ ____ which drains into the superior vena cava.

Answer 13

Azygos vein