Respiration

Question 1

What body cavities are present in the Thoracic region?

Answer 1

Thoracic cavity and part of the abdominal cavity

Question 2

Thoracic inlet consists of?

Answer 2

1st thoracic vertebra, 1st pair of ribs, and 1st sternebra (manubrium)

Question 3

Thoracic outlet consists of?

Answer 3

Last thoracic vertebra, last pair of ribs, costal arch, last sternebra (xiphoid process)

Question 4

Diaphragm attaches to?

Answer 4

Thoracic outlet

Question 5

Diaphragm at rest … that reaches level with the … on the inside of the … cavity.

Answer 5

forms a dome shape, 6th rib, thoracic cavity

Question 6

Diaphragm m. is important in separating … from …

Answer 6

thoracic cavity, abdominal cavity

Question 7

Describe pleura

Answer 7

Serous membrane- secretes serous fluid to lubricate
Simple squamous epithelial
Covers organs and walls of cavities

Question 8

Properties of pleura cavity

Answer 8

2 in the thoracic cavity
Closed potential space
Contains only a few drops of serous fluid
Negative pressure
Serves to help organs glide past each other and provide negative pressure to keep the lungs expanded against the wall of the thoracic cavity

Question 9

Mediastinum

Answer 9

space and mediastinal pleura that encloses said space between the left and right pleural cavities.

Question 10

Pleura lining the lungs

Answer 10

Visceral or pulminary pleura

Question 11

Pleura lining the walls of the thoracic cavity

Answer 11

Parietal pleura

Question 12

Pleura lining the rib cage

Answer 12

Costal pleura

Question 13

Pleura lining the mediastinum

Answer 13

Mediastinal pleura

Question 14

Pleura lining the diaphragm

Answer 14

Diaphragmatic pleura

Question 15

Pleura connecting the pulminary and mediatinal pleura

Answer 15

Connecting pleura

Question 16

Inspiration is a … Process and … The volume of the thoracic cavity

Answer 16

Active, increases

Question 17

Principle mm. Of inspiration

Answer 17

Diaphragm- flattens

sclenus and serratus dorsalis cranialis- pull ribs dorsal, cranially, and outward

Ext. & int. intercostal mm.- make the rest of the ribs follow suite

Question 18

Explain the process of inspiration

Answer 18

Mm. Act to increase volume of the thoracic cavity

Pleural cavity with its suction like negative preasure increases volume of lungs

Air pressure in lungs becomes less than that of atmosphere

Lungs fill with air

Question 19

Expiration is usually a … Process, but can be …, that allows the volume of the thoracic cavity to …

Answer 19

Passive, active, decrease

Question 20

Principle mm. is expiration are

Answer 20

Serratus dorsalis caudalis
Int & ext abdominal oblique mm.
Int & ext intercostal mm.
Transverse abdominal

Question 21

Explain the process of passive expiration

Answer 21

Relax mm. related to inspiration

Elasticity of lungs decrease volume of lungs along with the volume of the thoracic cavity

Air pressure in lungs becomes higher than the atmospheric air pressure

Air leaves the lungs

Question 22

What extra step is involved with active expiration?

Answer 22

the principle mm. of expiration contract in an abdominal press to forcefully decrease the volume of the thoracic cavity

Question 23

Pathology where air is present in the pleural cavities of the thorax?

Answer 23

Pneumothorax

results in loss of negative pressure and ability of the volume of the lungs to be expanded