Internal may refer to:

  • Internality as a concept in behavioural economics
  • Neijia, internal styles of Chinese martial arts
  • Neigong or "internal skills", a type of exercise in meditation associated with Daoism

Other articles related to "internal":

Internal Fertilization
... Internal fertilization in animals is done through copulation, which involves the insertion of the penis or other intromittent organ into the vagina (in most mammals) or to ... the tuatara, that don't have an intromittent organ, the internal fertilization is done by the means of the cloacal kiss, which consists in that the two animals touch their cloacae together in order to ... For example All reptiles, such as the snake and turtle reproduce by internal fertilization ...
Harrison's Principles Of Internal Medicine
... Harrison's Principles of Internal Medicine is an American textbook of internal medicine ...
External Validity - External, Internal, and Ecological Validity
... In many studies and research designs, there may be a "trade-off" between internal validity and external validity When measures are taken or procedures implemented aiming at increasing the chance for higher ...
Internal Intercostal Muscles
... The Intercostales interni (Internal intercostals) are eleven in number on either side ... The internal intercostals are innervated by the intercostal nerve ... The internal intercostals, however, are only used in forceful exhalation such as coughing or during exercise and not in relaxed breathing ...

Famous quotes containing the word internal:

    One’s stomach is one’s internal environment.
    Samuel Butler (1835–1902)

    Personal change, growth, development, identity formation—these tasks that once were thought to belong to childhood and adolescence alone now are recognized as part of adult life as well. Gone is the belief that adulthood is, or ought to be, a time of internal peace and comfort, that growing pains belong only to the young; gone the belief that these are marker events—a job, a mate, a child—through which we will pass into a life of relative ease.
    Lillian Breslow Rubin (20th century)

    If the Revolution has the right to destroy bridges and art monuments whenever necessary, it will stop still less from laying its hand on any tendency in art which, no matter how great its achievement in form, threatens to disintegrate the revolutionary environment or to arouse the internal forces of the Revolution, that is, the proletariat, the peasantry and the intelligentsia, to a hostile opposition to one another. Our standard is, clearly, political, imperative and intolerant.
    Leon Trotsky (1879–1940)