Respiratory System

Front 1

Alveoli

Back 1

Any of the many tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.

Front 2

bronchiole

Back 2

Any of the minute branches into which a bronchus divides.

Front 3

Bronchus

Back 3

Any of the major air passages of the lungs that diverge from the windpipe.

Front 4

Diaphragm

Back 4

A dome-shaped, muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs.

Front 5

Epiglottis

Back 5

A flap of cartilage at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.

Front 6

Glottis

Back 6

The part of the larynx consisting of the vocal cords and the slitlike opening between them. It affects voice modulation through expansion or contraction.

Front 7

Larynx

Back 7

The hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.

Front 8

Lung

Back 8

Each of the pair of organs situated within the rib cage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed. Lungs are characteristic of vertebrates other than fish, though similar structures are present in some other animal groups.

Front 9

nasal passages

Back 9

Air enters the body through either the open mouth or the nose. Tiny hairs in the nose trap unwanted particles while a sticky liquid called mucus catches many of the germs before they all can go too far into the respiratory system. The mucus also warms and moistens the air.

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

Spriograph

Back 11

An instrument for recording breathing movements.

Front 12

Tidal Volume

Back 12

Tidal volume is the lung volume representing the normal volume of air displaced between normal inspiration and expiration when extra effort is not applied. Typical values are around 500ml or 7ml/kg bodyweight.

Front 13

Inspiratory Reserve Volume

Back 13

The maximal volume of air inhaled from the end-inspiratory level.

Front 14

Expiratory Reserve Volume

Back 14

This represents the reserve volume of air you can exhale after you have exhaled normally during a resting respiration. Again, your body can call upon this reserve to increase the amount of air exchange.