Permissiveness (biology)

Permissiveness (biology)

In biology, permissiveness refers to a certain relationship between hormones and the target cell. It can be applied to describe situations in which the presence of one hormone, at a certain concentration, is required in order to allow a second hormone to fully affect the target cell. For example, thyroid hormone increases the number of receptors available for epinephrine at the latter's target cell, thereby increasing epinephrine's effect at that cell. Without the thyroid hormone, epinephrine would only have a weak effect. [cite book | last =Sherwood | first =Lauralee | coauthors = | editor =Peter Adams | title =Human physiology from cells to systems | edition =6th | year = | publisher =Thomson Brooks/Cole | location = | id =ISBN 0495014850 | doi = | pages = | chapter =Ch18 ]

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Reed College — Infobox University name = Reed College caption = Mascot of Reed College established = 1908 type = Private liberal arts college president = Colin Diver city = Portland state = Oregon country = United States coor= coord|45.48| 122.63|display=inline …   Wikipedia

  • education — /ej oo kay sheuhn/, n. 1. the act or process of imparting or acquiring general knowledge, developing the powers of reasoning and judgment, and generally of preparing oneself or others intellectually for mature life. 2. the act or process of… …   Universalium

  • Transsexualism — is a condition in which a person identifies with a physical sex different from the one with which they were born. A medical diagnosis can be made if a person experiences discomfort as a result of a desire to be a member of the opposite sex,cite… …   Wikipedia

  • human behaviour — Introduction       the potential and expressed capacity for physical, mental, and social activity during the phases of human life.       Human beings, like other animal species, have a typical life course that consists of successive phases of… …   Universalium

  • Right Realism — In criminology, Right Realism (also known as New Right Realism, Neo Classicism, Neo Positivism, or Neo Conservatism) is the ideological polar opposite of Left Realism. It considers the phenomenon of crime from the perspective of political… …   Wikipedia

  • Value of monogamy — The value of monogamy refers to people s views about the contributions monogamy makes, good or bad, to individual and social well being. Some cultures value monogamy as an ideal form of family organization. However, many cultures prefer other… …   Wikipedia

  • Ukraine — /yooh krayn , kruyn , yooh krayn/, n. a republic in SE Europe: rich agricultural and industrial region. 50,684,635; 223,090 sq. mi. (603,700 sq. km). Cap.: Kiev. Russian, Ukraina. Formerly, Ukrainian Soviet Socialist Republic. * * * Ukraine… …   Universalium

  • United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”