Respiratory Anatomy

Front 1

Respiration (breathing or ventilation)

Back 1

The exchange of oxygen and carbon dioxide between the atmosphere and body cells.

Front 2

External resporation

Back 2

Air containing oxygen passes through the respiratory tract, beginning with the nose, pharynx, larynx, trachea, and bronchi to the lungs (inhalation or inspiration).

Front 3

Alveoli

Back 3

The sacs in the lungs by which oxygen passes to the blood in capillaries.

Front 4

Capillaries

Back 4

Tiny blood vessels

Front 5

Exhalation or expiration

Back 5

When carbon dioxide passes back from the capillaries to the alveoli and is expelled through the respiratory tract.

Front 6

Nose

Back 6

Lined with mucous membrane and fine hairs it acts as a filter to moisten and warm the entering air

Front 7

Nasal septum

Back 7

Partition separating the right and left nasal cavities

Front 8

Paranasal sinuses

Back 8

Air cavities within the cranial bones that open into the nasal cavities

Front 9

Pharynx

Back 9

Serves as a food and air passageway. Air enters from the nasal cavities and or mouth and passes through the pharynx to the larynx. Food enters the pharynx from the mouth and passes into the esophagus or throat.

Front 10

Adenoids

Back 10

Lymphoid tissue located on the posterior wall of the bassl cavity or pharyngeal tonsils.

Front 11

Tonsils

Back 11

Lymphoid tissue located on the lateral wall at the junction of the oral cavity and oropharynx

Front 12

Larynx

Back 12

Location of the vocal cords. Air enters from the pharynx also called the voice box.

Front 13

Epiglottis

Back 13

Flap of cartilage that automatically covers the opening of the larynx and keeps food from entering the larynx during swallowing

Front 14

Trachea

Back 14

Passageway for air to the bronchi from the larynx or windpipe

Front 15

Bronchus pl. Bronchi

Back 15

One of two branches from the trachea that conducts air into the lungs, where it divides and subdivides. The branchings resemble a tree. Therefore they are referred to as a bronchial tree

Front 16

Bronchioles

Back 16

Smallest subdivision of the bronchial tree

Front 17

Alveolus pl alveoli

Back 17

Air sacs at the end of the bronchioles. Oxygen and carbon dioxide are exchanged through the alveolar walls and the capillars also a term for the socket in the jaw bones into which the teeth fit.

Front 18

Bronchi

Back 18

Brecho to pour, or wet