Human Respiratory System Quiz

The entrance of the respiratory system where air is filtered, warmed, and moistened.

The openings of the nose that allow air to enter the nasal cavity.

The first part of the nasal cavity, lined with hair and mucous membranes to trap dust and other particles.

The wall that divides the nasal cavity into two chambers.

The openings at the back of the nasal cavity that connect to the pharynx.

The hard palate, formed by the palatine process of the maxillary bone and the horizontal process of the palatine bone.

Formed by the sphenoid, ethmoid, frontal, and nasal bones.

Three bony, mucous-covered shelves that protrude from the lateral wall of the nasal cavity, increasing surface area and causing air turbulence.

Mucus-lined, air-filled cavities in the skull, draining into the nasal cavity.

The region behind the nasal cavity, contains the pharyngeal tonsils (adenoids).

The region behind the mouth, contains the palatine tonsils and lingual tonsils.

Connects the oropharynx to the larynx and esophagus, epiglottis closes to prevent food from entering trachea.

A structure of nine cartilages connected by membranes and ligaments, responsible for sound production.

Folds of tissue in the larynx responsible for sound production. They are covered by a mucous membrane and are sometimes called 'false' vocal cords.

The opening between the vocal folds in the larynx, through which air passes during breathing and speech.

A small, leaf-shaped flap of cartilage that covers the opening of the larynx during swallowing, preventing food from entering the airway.

The windpipe, a tube that carries air from the larynx to the lungs. Made of cartilage rings that keep it open.

The two main branches of the trachea that lead to the lungs, one for each lung.

The indentation on the surface of the lung where the bronchi, blood vessels, and nerves enter and exit the lung.

A thin, double-layered membrane that surrounds the lungs. The visceral layer touches the lungs, and the parietal layer lines the chest cavity.

The smallest branches of the bronchi, leading to respiratory bronchioles.

Bronchioles that connect terminal bronchioles to alveolar sacs, participating in gas exchange.

Clusters of tiny air sacs (alveoli) where gas exchange occurs.

Tiny air sacs in the lungs responsible for gas exchange.

A single layer of flattened cells lining the alveoli, allowing for efficient gas exchange.

Multiple layers of flattened cells protecting the oral cavity from abrasion.

Appears layered but is a single layer of cells lining the trachea and bronchial tree.

Strong, flexible cartilage found in the trachea and bronchial tree, providing support.

Flexible cartilage found in the epiglottis, allowing for its movement.

The nares, also known as nostrils, are the external openings of the nasal cavity that allow air to enter the respiratory system.

The nasal conchae are bony projections in the nasal cavity that increase the surface area for air flow, warming, and humidifying the incoming air.

The nasopharynx is the uppermost portion of the throat, specifically dealing with air passage and containing the opening for the Eustachian tube.

The glottis is the opening in the larynx that allows air to pass through the vocal cords, responsible for producing sound.

The epiglottis is a flap of cartilage that covers the trachea during swallowing, preventing food and liquid from entering the airway.

The carina is a ridge-like structure at the lower end of the trachea where it divides into the right and left bronchi. It contains sensitive mechanoreceptors that trigger a powerful cough reflex.

Bronchi are larger airways branching from the trachea, while bronchioles are smaller, smaller airways that lack cartilage and allow for bronchodilation and bronchoconstriction.

Alveoli are tiny, thin-walled air sacs in the lungs where gas exchange occurs. They are covered in capillaries and contain Type 1 Pneumocytes for this process.