Ch. 22 Key Terms #1

__________ is increased ventilation rate that leads to abnormally low blood carbon dioxide and high blood pH.

Hyperventilation

The __ is the indentation on the surface of the left lung that allows space for the heart.

cardiac notch

__ is the substance that acts as a lubricant for the visceral and parietal layers of the pleura during the movement of breathing.

pleural fluid

An __ is a small, grape-like sac that performs gas exchange in the lungs.

alveolus

The __ is the tube composed of cartilaginous rings that connects the lung bronchi and the larynx.

trachea

The __ is the total amount of air that can be held in the lungs.

total lung capacity (TLC)

The __ is the portion of the pharynx bordered by the oropharynx and esophagus; serves as a route for both air and food.

laryngopharynx

The __ is the portion of the posterior oral cavity that connects the oral cavity to the oropharynx.

fauces

____________ is the amount of air that normally enters the lungs during quiet breathing.

Tidal volume (TV)

The __ are the openings of the nostrils.

nares

The __ is the innermost layer of the pleura that is superficial to the lungs.

visceral pleura

The __ is one of the paired structures composed of lymphoid tissue located at the roof of isthmus of the fauces.

palatine tonsil

The __ is the leaf-shaped piece of elastic cartilage that swings close to the trachea during swallowing.

epiglottis

The __ is one sequence of inspiration and expiration.

respiratory cycle

The __ is the artery that carries deoxygenated blood to the alveoli.

pulmonary artery

________is movement of air into and out of the lungs; consists of inspiration and expiration.

Ventilation

The __ is the tube connected to the trachea that branches into many subsidiaries.

bronchus

Quiet breathing is also known as __.

eupnea

The __ are the small, flaring structures of the nostrils forming the lateral sides of the nares.

alae

The __ is varying amounts of air within the lungs at a given time.

respiratory volume