Respiratory System Quiz

This structure is called the windpipe and is supported by rings of cartilage.

• bronchus

• alveolus

• pharynx

• trachea

These respiratory tubes are primarily composed of smooth muscle and determine the flow of air to the alveoli.

• trachea

• bronchi

• bronchioles

• nares

The trachea branches into the right and left

• alveoli

• bronchi

• nares

• pulmonary arteries

The lungs are located within the

• mediastinum

• dorsal cavity

• spinal cavity

• thoracic cavity

Oxygen diffuses from the alveoli into the

• bronchioles

• trachea

• pulmonary capillaries

• eustachian tube

The diaphragm

• is smooth muscle that forms the bronchioles

• is skeletal muscle

• contracts in response to the firing of the vagus nerve

• forms the outer lining of the lungs

These respiratory muscles are located between the ribs.

• diaphragm

• bronchiolar smooth muscle

• intercostals

• sternocleidomastoids

Contraction of the diaphragm and the intercostal muscles

• stimulates the phrenic and intercostal nerves

• decreases thoracic volume

• causes air to move out of the lungs

• is responsible for inhalation

Dyspnea means

• "puffed up" alveoli

• pneumonia

• cyanosis

• difficulty breathing

The Adam's apple is

• cartilage

• the epiglottis

• the primary site of gas exchange

• the pharynx