6.4 Respiratory System

6.4 Respiratory System

Multiple Choice

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body

• to bring oxygen to the body

• to break down food and absorb nutrients

• to remove oxygen from the body and deliver carbon dioxide

Multiple Choice

The air sacs that are covered with capillaries where gas exchange takes place.

• Bronchi

• Trachea

• Oxygen

• Alveoli

Multiple Choice

Which of the following are features of the alveoli that adapt them to gas exchange?

I. High surface area
II. Thin walls
III. Dry surfaces

• I and II only
• I only
• II and III
• I, II, and III

Multiple Choice

Respiration is the 

• Intake of oxygen and release of carbon dioxide over a membrane
• Release of energy from food inside cells
• Mechanical movement to inhale and exhale air
• Feature that enable an animal to survive in its habitat

Multiple Choice

Gas exchange is needed to supply _____________ to cells and remove __________________

• carbon dioxide; oxygen

• oxygen; food

• oxygen; carbon dioxide

• carbon dioxide; water

Multiple Choice

Name the structure labeled 8 

• lungs 
• trachea 
• diaphragm 
• alveoli 

Multiple Choice

Alveoli increase the surface area in the lungs to allow...

• More nutrients to be absorbed
• You to breathe faster
• You to breathe slower
• More O2 and CO2 to exchange

Multiple Choice

Name the organ label # 2 .

• alveoli

• bronchus

• trachea

• lungs

Multiple Choice

Passage way that moistens the air and has hairs to trap dust and particles

• Nasal cavity
• Bronchi
• Mouth cavity
• Larynx

Multiple Choice

Muscular structure that helps to expand and contract the lungs, forcing air in and out

• Pharynx
• Nasal cavity
• Alveoli
• Diaphragm

Multiple Choice

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body

• to bring oxygen to the body

• to break down food and absorb nutrients

• to remove oxygen from the body and deliver carbon dioxide

Multiple Choice

How are type I pneumocytes well adapted for gas exchange?

• They provide a short diffusion path from the alveoli to capillaries

• They secrete a surfactant that prevents the walls of the alveoli from sticking by breaking surface tension

• They secrete a fluid to allow gases to dissolve and diffuse more efficiently

• They destroy bacteria inside the alveoli to prevent infection

Multiple Choice

Surfactant:

• decreases the surface tension of fluid in the alveoli

• increases the energy required to keep the lungs inflated

• makes the lungs tend to collapse

• traps foreign particles that enter the lungs

Multiple Choice

When Pressure increases then the Volume must...

• Increase

• decrease

Multiple Choice

Which of the following shows what happens to the chest cavity when air rushes into the lungs?

• decrease in volume

• deflates

• expands

• relaxes

Multiple Choice

How do you describe the condition of the diaphragm as one exhales?

• the diaphragm contracts

• the diaphragm relaxes

• the diaphragm goes down

• both a and c

Multiple Choice

What equipment is used to measure air being inspired and expired?

• spirometre

• spirometer

• inspirometer

• expirometer

Multiple Choice

exchange of gases

• bronchus

• alveoli

• larynx

• pharynx

Multiple Choice

smaller branches in lungs

• pharynx

• epiglottis

• bronchioles

• alveoli

Multiple Choice

Disease in which the alveoli are damaged or destroyed. Strongly linked to smoking.

• Allergies

• Emphysema

• Asthma

• Pneumonia

Multiple Choice

Destroys the tiny air sacs and the walls of the lung

• Emphysema

• Cardiovascular Disease

• Social Strain

• Addiction