Respiratory System Worksheet

Low PO2 and high PCO2 in the alveoli will cause ________.

• constriction of pulmonary capillaries and dilation of bronchioles

• constriction of pulmonary capillaries and bronchioles

• dilation of pulmonary capillaries and bronchioles

• dilation of pulmonary capillaries and constriction of bronchioles

The amount of air that can be forcefully inhaled after a normal tidal volume inspiration is termed the _______.

• inspiratory capacity

• vital capacity

• inspiratory reserve volume

• expiratory reserve volume

The "Adam's apple" is located on which cartilage?

• Thyroid cartilage

• Aretynoid cartilage

• Corniculate cartilage

• Cricoid cartilage

An increase in the volume of a container filled with air would have what effect on the pressure of the container?

• The pressure decreases.

• The pressure increases.

• The pressure remains the same.

• The pressure fluctuates randomly.

Hemoglobin has the highest affinity for which of the following?

• oxygen (O2)

• H2 (hydrogen)

• Carbon dioxide (CO2)

• Carbon monoxide (CO)

All of the following statements are true of inspiration except _______.

• the rib cage is elevated

• intrapulmonary pressure has decreased

• the diaphragm is relaxed

• volume in the thoracic cavity has increased

Air passing from the pharynx to the trachea must pass through the _______.

• diaphragm

• bronchi

• nasal cavity

• larynx

The pressure exerted by each type of gas in a gas mixture is the ______ of that gas.

• partial force

• partial volume

• partial percentage

• partial pressure

When holding our breath for a long time, we get the urge to breathe because of ________.

• an increase in CO₂

• a decrease in O₂

• a decrease in N₂

• an increase in pH

The chloride shift refers to _______.

• chloride ions moving into or out of the red blood cell

• chloride ions combining with bicarbonate ions

• chloride ions being released from hemoglobin

• chloride ions binding to hemoglobin