Glossary of terms used on this site

Glossary of biology.

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Glossaries

Term Main definition
Neornithes
Glossaries - Biology glossary

modern birds

nephridia
Glossaries - Biology glossary

excretory structures found in annelids

nephridiopore
Glossaries - Biology glossary

pore found at the end of nephridia

nephron
Glossaries - Biology glossary

functional unit of the kidney

neritic zone
Glossaries - Biology glossary

part of the ocean that extends from low tide to the edge of the continental shelf

net consumer productivity
Glossaries - Biology glossary

energy content available to the organisms of the next trophic level

net primary productivity
Glossaries - Biology glossary

measurement of the energy accumulation within an ecosystem, calculated as the total amount of carbon fixed per year minus the amount that is oxidized during cellular respiration

net primary productivity
Glossaries - Biology glossary

energy that remains in the primary producers after accounting for the organisms’ respiration and heat loss

net production efficiency (NPE)
Glossaries - Biology glossary

measure of the ability of a trophic level to convert the energy it receives from the previous trophic level into biomass

neural stimuli
Glossaries - Biology glossary

stimulation of endocrine glands by the nervous system

neural tube
Glossaries - Biology glossary

tube-like structure that forms from the ectoderm and gives rise to the brain and spinal cord

neurobiology
Glossaries - Biology glossary

study of the biology of the nervous system

neurodegenerative disorder
Glossaries - Biology glossary

nervous system disorder characterized by the progressive loss of neurological functioning, usually caused by neuron death

neuron
Glossaries - Biology glossary

specialized cell that can receive and transmit electrical and chemical signals

neurotransmitter
Glossaries - Biology glossary

chemical ligand that carries a signal from one nerve cell to the next

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