MCB 246 - HW 7

The pressure within the pleural cavity is known as the

Intrapleural pressure

Which are the functions of the respiratory system?

detection of odors allows air passage sound production exchange of O2 and CO2

Which is always higher, intrapulmonary pressure or intrapleural pressure?

intrapulmonary pressure

If no other forces were acting on the lungs, they would collapse. What is the reason for this?

The elastic tissue of the lung.

The parietal pleura lines which structures?

lateral surfaces of the mediastinum internal thoracic walls superior surface of the diaphragm

A collapsed lung remains down until ______ has been removed from the pleural space.

Air

The parietal pleura meets the visceral pleura at the ______ of each lung.

Hilum

A puncture to the pleural space by a knife, a gun, or a broken rib that allows air between the parietal and visceral pleura creates a condition a

Pneumothorax

A condition that occurs when free air gets into the pleural cavity is called a

Pneumothorax or hemopneumothorax

The lungs remain inflated despite their tendency to collapse. What is the reason for this?

The negative intrapleural pressure is relative to intrapulmonary pressure.

The presence of free air in the pleural space sometimes causes the affected lung to deflate, a condition called ______.

atelectasis

Respiration affects all conditions except ______.

blood K+ levels; DOES affect: venous return of blood blood levels of oxygen blood levels of carbon dioxide

The visceral pleura lines which structures?

the outer surface of each lung/ adheres to lungs surface