Human Lungs Flashcards Preview

Biology 224 > Human Lungs > Flashcards

Flashcards in Human Lungs Deck (12):
1

What are the Nasal Passages?

Chamber in which air is moistened, warmed, and filtered and in which sound resonates.

2

What is the Mouth?

Supplemental airway.

3

What is the Pharynx (throat)?

Airway connecting nasal passages and mouth with larynx, enhances sounds, also connects with esophagus.

4

What is the Epiglottis?

Closes off larynx during swallowing.

5

What is the Larynx (voice box)?

Airway where sound is produced,; closed off during swallowing.

6

What is the Trachea (windpipe)?

Airway connecting larynx with two bronchi that lead into the lungs.

7

What is the Pleura?

A double-layered membrane that separates lungs from the wall of the thoracic cavity; fluid between its two layers lubricates breathing movements.

8

What are Intercostal muscles?

Skeletal muscles between ribs that contract to fill and empty lungs.

9

What is the Diaphragm?

Muscle sheet between the chest cavity and abdominal cavity that contracts to fill that lungs.

10

What is the Lung?

A lobed, elastic organ of breathing that exchanges gases between internal environment and outside air.

11

What are Bronchi?

Increasingly branched airways leading to the alveoli of lung tissues (pulmonary arteries).

12

True or False: the lungs themselves do not contract or expand, they depend on other forces to expand or contract.

True.