The Respiratory System

Front 1

Alveoli

Back 1

Gas exchange structure within mammalian lungs; tiny air pocket with walls made of a membrane that is a single cell thick, allowing for exchange of respiratory gases.

Front 2

Bronchiole

Back 2

In a mammal, the passageway that branches from the bronchi into the separate lobes of the lungs; divides into smaller and smaller passageways that carry air into all portions of the lungs.

Front 3

Bronchus (pl. bronchi)

Back 3

In a mammal, the passageway that branches from the trachea into the lungs, with one bronchus carrying air into each lung.

Front 4

Diaphragm

Back 4

In mammals, a muscle layer that separates the region of the lungs from the region of the stomach and liver; contraction contributes to inspiration by increasing the volume of the thoracic cavity.

Front 5

Epiglottis

Back 5

In mammals, flap of cartilage located over the entrance to the trachea; closes during swallowing to prevent food from entering the respiratory tract.

Front 6

Glottis

Back 6

n mammals, the opening of the trachea through which air enters the larynx.

Front 7

Larynx

Back 7

In mammals, a structure within the upper respiratory tract that contains the vocal cords; also commonly known as voice box.

Front 8

Lung

Back 8

The main organs of the respiratory system that have the function of transporting oxygen from the air into the blood and removing carbon dioxide from the blood; located in the chest, one on the left and one on the right.

Front 9

Nasal Passage

Back 9

Passage from the nostrils to the back of the throat through which air enters the body; serves to warm, moisten, and clean incoming air; lined with ciliated cells and mucus-secreting cells

Front 10

Nostril

Back 10

Either of two external openings of the nasal cavity in vertebrates that admit air to the lungs and smells to the olfactory nerves.

Front 11

Spiograph

Back 11

Graph representing the amount of air that moves into and out of the lungs with each breath.

Front 12

Tidal Volume

Back 12

Volume if air that is inhaled and exhaled in a normal breathing movement when the body is at rest.

Front 13

Inspiratory reserve volume

Back 13

Additional volume of air that can be taken in by thee lungs, beyond a regular, or tidal, inhalation.

Front 14

Expiratory reserve Volumes

Back 14

Additional volume of air that can be forced out of the lungs, beyond a regular, or tidal, exhalation.

Front 15

Vital Capacity

Back 15

The total volume of gas that can be moved in or out of the lungs; equal to tidal volume + inspiratory reserve volume + expiratory reserve volume.

Front 16

Residual Volume

Back 16

Amount of gas that remains in the lungs and the passageways of the respiratory system even after a full exhalation.

Front 17

External Respiration

Back 17

Exchange of oxygen and carbon dioxide between the air and the blood; takes place in the lungs.

Front 18

Internal Respiration

Back 18

Exchange of oxygen and carbon dioxide between the body's tissue cells and the blood.