Respiratory System

Question 0

The internal nares will open into the ___.

Answer 0

Nasopharynx

Question 1

Which of the following is part of the upper respiratory tract?

Answer 1

Pharynx

Question 2

The olfactory nerves pass through openings in the ____.

Answer 2

Cribriform plate

Question 3

Most of the respiratory passage surface is lined with ___.

Answer 3

Pseudostratified epithelium

Question 4

The tissue lining the alveoli is ____ epithelium.

Answer 4

Simple squamous

Question 5

How many alveoli are there in an average adult lung?

Answer 5

300,000,000 (300 million)

Question 6

Gas is exchanged in the alveoli by a process of ____.

Answer 6

Simple diffusion

Question 7

What is the entrance into the lungs called?

Answer 7

Hilus

Question 8

The pleural cavity is the space between the lung and ____.

Answer 8

Parietal pleura

Question 9

Which of these is NOT a chronic obstructive pulmonary disease?

• emphysema
• asthma
• lung cancer
• bronchitis

Answer 9

Lung cancer

Question 10

Which mechanism prevents over-infection of the lungs?

Answer 10

Hering-Breuer reflex

Question 11

Which is the most common cause of hyperventilation?

Answer 11

Anxiety

Question 12

Which is the most abundant gas in the atmosphere?

Answer 12

Nitrogen

Question 13

What is the normal PCO(sub)2(/sub) of the capillary blood?

Answer 13

45 mm Hg

Question 14

What is the partial pressure of atmospheric oxygen?

Answer 14

160 mm Hg

Question 15

Which functions can be attributed to the mucous membrane that lines the nasal cavity?

Answer 15

• Warms incoming air
• filters particles from incoming air
• moistens incoming air

Question 16

The ______ cartilage(s) mark(s) the lower most portion of the larynx.

Answer 16

Cricoid

Question 17

The true vocal cords are those that produce the sounds of the human voice. Where are these located?

Answer 17

Inferior to the false vocal cords

Question 18

Thin-walled outpouchings of the alveolar ducts of the lungs are the ______.

Answer 18

Alveolar sacs

Question 19

The primary force responsible for air moving into the lungs during inhalation is _____.

Answer 19

Atmospheric pressure

Question 20

What is the properties of the mucous lining of the respiratory tract?

Answer 20

• warms incoming air
• contains cilia
• cleanses particles

Question 21

What contains a sinus?

Answer 21

• frontal bone
• ethmoid
• sphenoid bone

Question 22

Where are the palatine tonsils located?

Answer 22

Oropharynx

Question 23

The true vocal cords move because they are attached to the _____ cartilage.

Answer 23

Arytenoid

Question 24

C-shaped pieces of cartilage are found within the _____.

Answer 24

Trachea

Question 25

The carina separates the _____ from each other.

Answer 25

Primary bronchi

Question 26

There are _____ secondary bronchi?

Answer 26

5

Question 27

The bronchioles enter the ____ of the lungs.

Answer 27

Lobules

Question 28

The functional gas exchanging units are termed ____.

Answer 28

Alveoli

Question 29

The relative amount of smooth muscle is highest in the ____.

Answer 29

Bronchioles

Question 30

The main function of the pleural membranes is to ____.

Answer 30

Reduce friction

Question 31

Atmospheric pressure is around _____ mmHg.

Answer 31

760

Question 32

The movement of air within the respiratory system is correctly referred to as ____.

Answer 32

Ventilation

Question 33

What prevents the alveoli from collapsing during exhalation?

Answer 33

Surfactant

Question 34

The main force causing the exhalation of air is the ____.

Answer 34

Elastic recoil

Question 35

During inspiration the intra-alveolar pressure reaches _____.

Answer 35

Don’t know which one

• 760 mmHg
• 758 mmHg
• 763 mmHg
• 730 mmHg

Question 36

A pneumothorax occurs when the thoracic pleural pressure reaches around _____ mmHg.

Answer 36

760