enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Chorionic villi - Wikipedia

    en.wikipedia.org/wiki/Chorionic_villi

    Primary: The chorionic villi are at first small and non-vascular. 13–15 days: trophoblast only [1] Secondary: The villi increase in size and ramify, while the mesoderm grows into them. 16–21 days: trophoblast and mesoderm [1] Tertiary: Branches of the umbilical artery and umbilical vein grow into the mesoderm, and in this way the chorionic ...

  3. List of forms of government - Wikipedia

    en.wikipedia.org/wiki/List_of_forms_of_government

    The primary positions of power within a republic are not inherited, but are attained through elections expressing the consent of the governed. Such leadership positions are therefore expected to fairly represent the citizen body. It is a form of government under which the head of state is not a monarch.

  4. Tertiary government - Wikipedia

    en.wikipedia.org/wiki/Tertiary_government

    Tertiary government usually refers to the lowest organizational level of government within three-layered federal systems. Typical federal systems include: the principal national government; the secondary provinces, states or departments; and, the tertiary municipalities, counties or townships.

  5. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    At the end of the second week of development, some cells of the trophoblast penetrate and form rounded columns into the syncytiotrophoblast. These columns are known as primary villi. At the same time, other migrating cells form into the exocoelomic cavity a new cavity named the secondary or definitive yolk sac, smaller than the primitive yolk sac.

  6. Constitution of the United States - Wikipedia

    en.wikipedia.org/wiki/Constitution_of_the_United...

    The Articles gave little power to the central government. While the Confederation Congress had some decision-making abilities, it lacked enforcement powers. The implementation of most decisions, including amendments to the Articles, required legislative approval by all 13 of the newly formed states.

  7. Federal government of the United States - Wikipedia

    en.wikipedia.org/wiki/Federal_Government_of_the...

    The federal government of the United States (U.S. federal government or U.S. government) [a] is the common government of the United States, a federal republic located primarily in North America, comprising 50 states, five major self-governing territories, several island possessions, and the federal district (national capital) of Washington, D.C ...

  8. Central government - Wikipedia

    en.wikipedia.org/wiki/Central_government

    A central government is the government that is a controlling power over a unitary state. Another distinct but sovereign political entity is a federal government , which may have distinct powers at various levels of government, authorized or delegated to it by the federation and mutually agreed upon by each of the federated states .

  9. Parliament - Wikipedia

    en.wikipedia.org/wiki/Parliament

    The Central Council of Ukraine, or the Central Rada, founded on March 4, 1917, was the All-Ukrainian council of the Ukrainian People's Republic, which declared its full state independence in the Fourth Universal of the Ukrainian Central Council in 1918. The contemporary Ukrainian parliament is called the Verkhovna Rada of Ukraine.