Anatomy of Respiratory system

Question 1

What are the muscles of Inspiration?

Answer 1

Diaphragm and external intercostals. When the diaphragm contracts, chest expands downward and elevates lower ribs. When intercostals contract the ribs are elevated and A-P diameter of chest increases.

Question 2

What are the accessory muscles of inspiration?

Answer 2

SCM, scalenes, pec major, pec minor, and SA

Question 3

What are the muscles of Exhalation?

Answer 3

Exhalation results from passive recoil of the lungs and rib cage. Forced expiration requires the RA, external oblique, internal oblique, and TA to depress the lower ribs.

Question 4

Components of Upper Respiratory Tract

Answer 4

nasal cavity, pharynx and larynx. These passages humidify, cool, or warm inspired air and filter air.

Question 5

Components of Lower Respiratory Tract

Answer 5

Trachea and Lungs. Within the lungs there are branches that help conduct air.

Question 6

How many lobes does each lung have?

Answer 6

R has 3 (superior, middle, and inferior) and L has 2 (superior and inferior)

Question 7

Pleurae

Answer 7

A membranous sac that covers each lung. The visceral pleura covers the surface of the lungs. The parietal pleura covers the inner surfaces of the chest wall.

Question 8

Pneumothorax

Answer 8

when the pleural space contains air which can compress lung and cause pulmonary distress

Question 9

Hemothorax

Answer 9

when the pleural space contains blood which can compress lung and cause pulmonary distress