Respiratory System Quiz

Which of the following occurs as air is drawn through the nose?

Air is warmed, filtered, and humidified.

Hemoglobin in RBCs can bind both oxygen and carbon dioxide, but not at the same time since it uses the same binding site. (T/F)

False

What is involved in the process of breathing?

skeletal muscles, nervous system, respiratory system, and bones (not the circulatory system)

E-cigarettes are often regulated as a tobacco product that contains chemicals, but they do not contain tobacco. (T/F)

True

Which muscle separates the thoracic cavity from the abdominal cavity?

diaphragm

External respiration is the process of ____

moving gases into or out of the blood stream within lung tissue.

Hemoglobin binds more tightly to carbon monoxide than to oxygen. (T/F)

True

Ventilation refers to the process by which ____

air moves into and out of the lungs

What is part of an individual's vital lung capacity?

expiratory reserve, inspiratory reserve, and tidal volume (not residual volume)

A small amount of fluid is contained in the pleural cavity to____

function as a lubricant as the lungs move during ventilation.

During exhalation, the pressure inside the lungs ____

initially is higher than atmospheric pressure, but drops as air leaves the body.

During inspiration, intercostal muscles function to ____

pull the rib cage up and out, so that lung volume increases.

How does external respiration differ from internal respiration?

External respiration refers to gas exchange between inhaled air and blood, whereas internal respiration refers to gas exchange between the blood and the tissue fluids.

Antibiotics are the preferred treatment for colds. (T/F)

False

An increase in the amount of carbon dioxide in the body results in a decrease in the pH of the cerebrospinal fluid, which results in an increase in breathing rate. (T/F)

True

Longer vocal cords generate lower-pitched tones. (T/F)

True

Lung capacity is typically measured with the use of a spirometer. (T/F)

True

Lung diseases, such as emphysema, can be diagnosed by measuring lung volumes and the rates at which these volumes change. (T/F)

True

Oxygen and carbon dioxide are exchanged with blood directly across the alveoli wall. (T/F)

True

Surfactant is released to reduce surface tension in the alveoli. (T/F)

True

The trachea is completely surrounded by rings of cartilage, resulting in an organ that is inflexible. (T/F)

False

Why must humans constantly breathe in oxygen in order to stay alive?

Oxygen is essential for the production of most of the ATPs required to fuel cell functions.

The rate and depth of normal breathing are controlled by the need to get rid of CO2. (T/F)

True

Bronchioles differ from bronchi in that they ____

can have alveoli attached to them.

During the ingestion of food or liquid, which one of the following tips to block the opening to the trachea?

epiglottis

During puberty, the increased production of testosterone in males causes the rapid enlargement of which one of the following structures of the respiratory system?

larynx

What is the order of contact as air is drawn into the body?

pharynx> larynx> trachea> bronchiole> alveoli

During a cough, what is responsible for constricting the size of the trachea?

smooth muscle

A "runny nose" due to the cold temperature results from ____

the slowed activity of nasal cilia.

All of the following are true regarding the effect of smoking on the respiratory system except which one?

Antimicrobial compounds found in the respiratory mucus of smokers decrease the likelihood of infection.