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Flashcards in Respiratory System Deck (12)
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1
Q

Respiratory system

A

Works in conjunction with the circulatory system to deliver oxygen to the tissues and rid the body of carbon dioxide through the process of ventilation (breathing).

2
Q

Main organs of respiratory system

A

Lungs and alveoli

3
Q

Lungs

A

Responsible for gas exchange

4
Q

Alveoli

A

Functional cells of the lungs where the gas exchange takes place

5
Q

Diaphragm

A

Large, dome shaped muscle that separates thoracic and abdominal cavities.

6
Q

Inspiration

A

Breathing in.

Diaphragm contracts downward while intercostal muscles expand the rib cage to create space for lung expansion. Air pressure within lungs decreases, air flows in.

7
Q

Expiration

A

Breathing out.

Diaphragm pushes upward, the ribs push downward, lung pressure increases, air is expelled.

8
Q

Thoracic cavity

A

Divided into pleural and mediastinum cavities

9
Q

Pleural cavity

A

Surrounds the lungs

10
Q

Mediastinum cavity

A

Area between the lungs; holds heart, trachea, and esophagus.

11
Q

Right lung

A

Three lobes

Upper, middle, lower

12
Q

Left lung

A

Two lobes

Upper and lower