Chapter 39

Question 1

Explain the Human Lung whenever it intakes Air

Answer 1

Air first comes in through Nasal Cavity -> Pharynx -> Trachea -> Bronchi

Question 2

Trachea and bronchi are made up of what?

Answer 2

Incomplete rings of Cartilage

Question 3

Inhaled air pases through what? (lgt)

Answer 3

Larynx, glotis, trachea

Question 4

What does the trachea dived up to

Answer 4

Trachea -> Bronchi -> Bronchioles

Question 5

Terminal bronchioles are connected by respiratory bronchioles to _____ and _____

Answer 5

Alveolar ducts and sacs

Question 6

How many alveoli does a alveolar sac contain?

Answer 6

20 - 30

Question 7

What happens whenever air flows into atrium?

Answer 7

Gas exchange occurs with alveoli and capillaries

Question 8

What do Mucous glands secrete?

Answer 8

Mucous so as to keep airways moist and flexible

Question 9

What lines Bronchi and Bronchioles

Answer 9

Cilia which keep particles and mucus out of lungs

Question 10

What is the outside of each lung covered with?

Answer 10

Visceral pleural membrane

Question 11

What is the inner wall of the thoracic cavity lined with?

Answer 11

The parietal pleural membrane

Question 12

What is the space between the two membranes?

Answer 12

The pleural cavity

Question 13

SO what is the tissue that surrounds lungs

Answer 13

Pleura

Question 14

During inhalation thoracic volume increases what are the two muscle

Answer 14

The intercostal muscle (expands ribs) and diaphragm (expands lungs)

Question 15

What is FEV1?

Answer 15

the amount of air that can
be forcibly exhaled in one second after taking
a deep breath

Question 16

What is FVC?

Answer 16

The total amount of air that is exhaled

Question 17

What does the FEV1:FVC ratio tell us about respiratory diseases

Answer 17

Thus, the FEV1/FVC ratio
is lower in persons with obstructive lung
disease (less than 69 percent) than in persons
with restrictive disease (88 to 90 percent).