Addiction and neural ageing
Addiction and neural ageing

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Monday, 27 Jun 2022, 06:15
Site: Open Learning
Course: Addiction and neural ageing (SD805_2)
Glossary: Glossary
T

telomerase

An enzyme that replicates telomeres. Telomerase is a specialised reverse transcriptase able to replicate without loss the 5′ end (in a 5to 3end direction) of each DNA strand in the chromosome.

telomere

A term used for the end of the chromosome; simple tandem DNA repeat sequences that make the end of a eukaryotic chromosome.

temperature acclimatisation

Adjustment to a different (i.e. higher or lower) environmental temperature. For example, heat acclimatisation involves a more rapid sweating response, an increase in the volume of sweat produced and a reduction in the amount of salt (NaCl) lost via sweating.

temporal contiguity

The presentation of two stimuli (e.g. a conditional and an unconditional stimulus) at the same time.

terminal drop

This describes the state of affairs when the body finally wears out.

tertiary structure

The overall shape unique to a particular macromolecule, such as a polypeptide chain.

thermoneutral zone

Range of environmental temperatures that can be adjusted to by control of the blood supply to the skin (via the state of contraction of the blood vessels in the skin). In adults, this range is between 25 and 30 °C.

thermoregulation

The maintenance of body temperature within its normally narrow range (36–38 °C.).

tissue culture

Growing cells that have been isolated from the body, in dishes containing all the nutrients necessary for survival and growth.

tolerance

A decreasing response to an interventio (e.g. drug injection) as a function of its repeated presentation.

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