Lesson | Unit 4B.2 | The Respiratory System | Bio 20

Multiple Choice

What is the primary process through which gas exchange occurs in the alveoli?

• Osmosis

• Diffusion

• Active transport

• Filtration

Multiple Choice

In the process of gas exchange, which gas diffuses into the alveoli to be exhaled?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Multiple Choice

The alveoli have a high concentration of ___ after inhaling, which diffuses into the blood.

• CO2

• O2

• N2

• H2O

Multiple Choice

What happens to oxygen after it diffuses into the blood from the alveoli?

• It is exhaled

• It is used for cell respiration

• It is stored in the lungs

• It is converted to carbon dioxide.

Multiple Choice

Which of the following statements is true about the blood entering the alveoli?

• It has a high concentration of O2

• It has a high concentration of CO2

• It is oxygenated

• It is free of gases.

Multiple Choice

What happens when you inhale?

• CO2 enters the body

• Oxygen enters the body

• Nitrogen enters the body

• Helium enters the body

Multiple Choice

Oxygen diffuses from the alveoli into the ______.

• Stomach

• Capillaries

• Heart

• Liver

Multiple Choice

What is the concentration gradient direction for oxygen diffusion?

• Low to high

• High to low

• No gradient

• Circular

Multiple Choice

CO2 diffuses into the alveoli from the ______.

• Capillaries

• Alveoli

• Stomach

• Heart

Multiple Choice

What happens to CO2 when we exhale?

• It is absorbed

• It is released

• It is converted to oxygen

• It remains in the body.

Multiple Choice

What happens to the diaphragm during inhalation?

• It contracts and moves downward

• It relaxes and moves upward

• It remains stationary

• It contracts and moves upward

Multiple Choice

During exhalation, the pressure in the lungs ______.

• A) increases

• B) decreases

• C) remains the same

• D) fluctuates

Multiple Choice

Which muscles are involved in lifting the rib cage during inhalation?

• Intercostal muscles

• Abdominal muscles

• Diaphragm

• Pectoral muscles

Multiple Choice

What is the role of the diaphragm in breathing?

• It helps in the movement of gases from high to low pressure

• It pumps blood

• It filters air

• It digests food

Multiple Choice

During inhalation, air moves into the lungs because the pressure inside the lungs ______.

• A) increases

• B) decreases

• C) remains constant

• D) fluctuates

Multiple Choice

What happens when CO2 levels in the bloodstream increase?

• The diaphragm relaxes

• The diaphragm contracts

• The lungs deflate

• The heart rate decreases.

Multiple Choice

As the diaphragm contracts, it pulls ________, creating an area of low pressure inside the lungs.

• upwards

• sideways

• downwards

• backwards

Multiple Choice

Gases move from areas of high pressure to areas of low pressure. What is the result of this movement in the lungs?

• Air rushes out of the lungs

• Air rushes into the lungs

• The lungs collapse

• The diaphragm contracts.

Multiple Choice

When CO2 in the bloodstream decreases, the diaphragm is triggered to ________.

• A) contract

• B) relax

• C) expand

• D) deflate

Multiple Choice

What is released into the bloodstream as a by-product of cell respiration?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Multiple Choice

What device is used to measure respiratory volumes?

• Thermometer

• Spirometer

• Barometer

• Hygrometer

Multiple Choice

Which part of the spirometer is used to measure lung volumes?

• Floating bell

• Scale

• Water tank

• Mouthpiece

Multiple Choice

In the spirometer, where is the mouthpiece inserted?

• Into the floating bell

• Into the drum retainer

• Into the water tank

• Into the designated slot.

Multiple Choice

What is the volume of air that is inhaled and exhaled when breathing normally called?

• Inspiratory reserve volume

• Tidal volume

• Expiratory reserve volume

• Residual volume

Multiple Choice

Which volume refers to the additional air that can be taken into the lungs beyond regular inhalation?

• Tidal volume

• Expiratory reserve volume

• Inspiratory reserve volume

• Residual volume

Multiple Choice

The additional volume of air that can be forced out of the lungs beyond regular exhalation is known as ________.

• Tidal volume

• Expiratory reserve volume

• Inspiratory reserve volume

• Residual volume

Multiple Choice

What is the total lung volume capacity that includes tidal volume, inspiratory reserve volume, and expiratory reserve volume called?

• Residual volume

• Vital capacity

• Tidal volume

• Expiratory reserve volume

Multiple Choice

The amount of gas that remains in the lungs after full exhalation is referred to as ________.

• A) Vital capacity

• B) Tidal volume

• C) Residual volume

• D) Inspiratory reserve volume.

Multiple Choice

What does the tidal volume represent in a spirograph?

• The maximum amount of air inhaled

• The amount of air inhaled or exhaled during normal breathing

• The air left in the lungs after exhalation

• The total lung capacity.

Multiple Choice

Which of the following is the correct definition of inspiratory reserve volume?

• The additional air that can be inhaled after a normal inhalation

• The air exhaled after a normal exhalation

• The total volume of air in the lungs

• The air left in the lungs after exhalation.

Multiple Choice

Fill in the blank: The _______ capacity is the total amount of air that can be exhaled after a maximum inhalation.

• Vital

• Residual

• Tidal

• Inspiratory

Multiple Choice

How might the spirograph of a smoker differ from that of a non-smoker?

• Higher tidal volume

• Lower vital capacity

• Increased inspiratory reserve volume

• No difference

Multiple Choice

What is the functional residual capacity?

• The air left in the lungs after a normal exhalation

• The total volume of air in the lungs

• The maximum amount of air inhaled

• The air exhaled during normal breathing.

Multiple Choice

Which of the following is a respiratory disorder characterized by inflammation of the airways?

• Laryngitis

• Bronchitis

• Pneumonia

• Asthma

Multiple Choice

Fill in the blank: _______ is a respiratory disorder that primarily affects the alveoli in the lungs.

• Emphysema

• Pleurisy

• Cystic Fibrosis

• Tuberculosis

Multiple Choice

What is the primary cause of Tuberculosis?

• Viral infection

• Bacterial infection

• Genetic mutation

• Environmental factors

Multiple Choice

Which of the following symptoms is most commonly associated with Asthma?

• Persistent cough

• Shortness of breath

• Chest pain

• Fever

Multiple Choice

Fill in the blank: The treatment for Cystic Fibrosis often includes _______ to help clear mucus from the lungs.

• Antibiotics

• Physical therapy

• Surgery

• Chemotherapy