Health Bangladesh Medical Science

Thursday, May 31, 2012

[RS] Q.5) Pressure related to respiration:

ans.

a) Intrapleural pressure

b) Alveolar pressure (Intrapulmonary pressure)

c) Transpulmonary pressure

a)Intrapleural pressure:

· It is the pressure of the fluid in between two layers of pleura.

· It requires to prevent lungs collapse.

· It is always negative due to continual absorption of fluid from the space into the capillaries. This absorption creates a partial vacuum and produce a negative

[RS] Q.4) Muscles of respiration:

Ans.

Muscles of respiration:

A ) In quite inspiration:

The Diaphragm
External intercostal muscle

B ) In force full inspiration:

The diaphragm
External intercostal muscle
Sternoclidomastoid muscle
Scaleni muscle

[RS] Q.3) What is respiration, Phages of respiration, types of respiration, rate of respiration.

Ans.

Respiration:
It is a physiological process which means the transport of O2 from the atmosphere to cell of the body for oxidation and elimination of CO2 and other volatile metabolic end products from the cell to atmosphere.

Phages of respiration:

Inspiration (active process) - It means intake of air into lungs. It is about 2 seconds.
Expiration (passive process) – It means output of air from lungs. It is about 3seconds.

[RS] Q.2) Zone of Lungs:

Ans.

i) Conductive zone.
ii) Respiratory zone.

Conductive zone: (From nose, Oropharynx, Pharynx, Larynx, trachea, bronchi up to terminal bronchioles)
It is the area of air ways where no gas exchange takes place due to thickness of the wall of muscle &