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Acidic
Having a pH less than 7.
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Glucose
A simple sugar made by the body from food, which is used by cells to make energy in respiration.
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Lactic acid
A toxic chemical produced during anaerobic respiration.
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Micro-Organism
Another name for a microbe. It is microscopic and is an organism, such as a virus or bacteria.
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Mitochondria
Structures in the cytoplasm of all cells where respiration takes place (singular is mitochondrion).
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Oxidise
To add oxygen or to combine with oxygen.
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Power of Hydrogen (pH)
Scale of acidity or alkalinity. A pH (power of hydrogen) level below 7 is acidic, a pH level above 7 is alkaline.
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Alveoli
Tiny air sacs in the lungs, where gas is exchanged during breathing.
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Bronchi
The plural of 'bronchus'. The bronchi are the two major air tubes in the lungs.
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Bronchioles
The many small, branching tubes into which the bronchi subdivide.
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Cilia
Tiny hair-like projections from a cell that usually allow it to move a substance past the cell (for example, in the bronchioles in the lungs).
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Diaphragm
A large sheet of muscle that separates the lungs from the abdominal cavity.
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Intercostal Muscles
Muscles between the ribs which raise the ribcage by contracting and lower it by relaxing.
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Pathogens
Micro-organisms that cause disease.
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Respire
To engage in respiration, the energy-producing process inside living cells.
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Trachea
The major airway in the respiratory system, also known as the windpipe, connecting the pharynx and larynx to the lungs.
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Other cards in this set

Card 2

Front

A simple sugar made by the body from food, which is used by cells to make energy in respiration.

Back

Glucose

Card 3

Front

A toxic chemical produced during anaerobic respiration.

Back

Preview of the back of card 3

Card 4

Front

Another name for a microbe. It is microscopic and is an organism, such as a virus or bacteria.

Back

Preview of the back of card 4

Card 5

Front

Structures in the cytoplasm of all cells where respiration takes place (singular is mitochondrion).

Back

Preview of the back of card 5
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