Significance of functional and nutritive pulmonary circulation for vital reactions in the form of embolisms

The functional and nutritive circulation in the lungs is connected by anastomoses between the pulmonary and bronchial arteries. The anastomoses have the structure of blocked arteries from which arteriovenous anastomoses proceed to the peribronchial plexus. The pulmonary artery is provided with a flow impulse by the anastomoses, and oxygen-containing blood is admixed with the venous blood, thus forming an "aortalization" in the lungs. By diverting the bloodstream, venous blood can reach the bronchial artery. The peculiarities of the lung circulation are important for vital reactions in the form of macro- and microembolisms. Macroembolisms prove the functionality of the system if branches of the pulmonary artery are closed before the arteries are blocked. A hemorrhagic infarction either arises or does not arise, and the hemorrhagic infarction cannot exceed a certain limit. A microembolism is over and above the anastomoses. If the microembolism is greater, pressure in the arteria pulmonaris can cause blood from the pulmonary artery to overflow into the bronchial artery. Because arteriovenous anastomoses arise from the blocked arteries, microemboli can now reach the systemic circulation. Thus, the system described can explain the passage of microemboli into the systemic circulation, avoiding the capillaries of the lungs; on the other hand, larger microembolisms can prove the functionality of the system.     

Facing the powers that be

Lobbyists, entrenched forces in congress and self-interested friends will try to stymie Clinton's efforts. A look at four key arenas of combat.     

Historical geography of the population of Michoacan. Eighteenth century

The author incorporates geographic variables into this study of population dynamics in Michoacan, Mexico, during the eighteenth century.     

Reviews

R. W. Davies, ed., From Tsarism to the New Economic Policy. Continuity and Change in the Economy of the USSR. London and Basingstoke: Macmillan, 1990, xx + 417 pp., £45.00.

Alastair McAuley, ed., Soviet Federalism, Nationalism and Economic Decentralisation. Leicester and London: Leicester University Press, 1991, ix + 214pp., £38.00.

Loren Graham, ed., Science and the Soviet Social Order. Cambridge, MA and London: Harvard University Press, 1990, ix + 443 pp., £27.95.

Ronald I. McKinnon, The Order of Economic Liberalization: Financial Control in the Transition to a Market Economy. Baltimore, MD, and London: The Johns Hopkins University Press, 1991. xii + 200 pp., £20.00. $32.00.

Mary McAuley, Bread and Justice: State and Society in Petrograd 1917–1922. Oxford: Oxford University Press, 1991, xviii + 461 pp., £45.00.

David Armstrong & Erik Goldstein, eds, The End of the Cold War. London: Frank Cass & Co Ltd, 1990. 216pp., £19.50.

Paul B. Stephan III & Boris M. Klimenko, eds, International Law and International Security: Military and Political Dimensions. A US‐Soviet Dialogue. Armonk, NY, and London: M. E. Sharpe, Inc., 1991, xxii + 362 pp., $90.00.

Richard F. Staar, Foreign Policies of the Soviet Union. Stanford, CA: Hoover Institution Press, 1991, xl + 352 pp., £14.95 p/b.

Robert O. Freedman, Moscow and the Middle East: Soviet Policy Since the Invasion of Afghanistan. Cambridge: Cambridge University Press, 1991, xi + 426 pp., £35.00 h/b, £14.95 p/b.

Galia Golan, Soviet Policies in The Middle East: From World War II to Gorbachev. Cambridge: Cambridge University Press, 1990, ix + 319 pp., £27.50 h/b, £10.95 p/b.

Brian McNair, Glasnost, Perestroika and the Soviet Media. London and New York: Routledge, 1991, x + 231 pp., £35.00.

Shams Ud Din, ed, Perestroika and the Nationality Question in the USSR. New Delhi: Vikas, 1991, xv + 145 pp., £15.95.

Ronald J. Hill & Jan Zielonka, eds, Restructuring Eastern Europe: Towards a New European Order. Aldershot: Edward Elgar, 1990, ix + 226 pp., £28.50.

Aleksa Djilas, The Contested Country: Yugoslav Unity and Communist Revolution 1919–1953. London: Harvard University Press, 1991, v + 259 pp., £27.95 h/b.

Bartlomiej Kamiriski, The Collapse of State Socialism: the Case of Poland. Princeton, NJ: Princeton University Press, 1991, xiv + 264 pp., $39.50 h/b, $14.95 p/b.

David Ost, Solidarity and the Politics of Anti‐Politics. Opposition and Reform in Poland since 1968. Philadelphia, PA: Temple UP, 1990, xi + 279 pp. $34.95.

Roman Laba, The Roots of Solidarity—A Political Sociology of Working Class Democratisation. Princeton, NJ: Princeton UP, 1991, xii + 247 pp., $24.95.

Keith Sword, ed, The Soviet Takeover of the Polish Eastern Provinces, 1939–41. London: Macmillan (in association with the School of Slavonic and East European Studies), 1991, xxiii + 318 pp., £45.00.

William B. Husband, Revolution in the Factory: The Birth of Soviet Textile Industry, 1917–20. New York and Oxford: Oxford University Press, 1990, viii + 227 pp. £25.00.     

Book reviews

Turkey in the Middle East By Philip Robins. Pinter for the Royal Institute of international Affairs. 1991.130 pp. £22.50. ISBNO 86187 198 7. PBk £8.95. ISBN 0 86187 1995.

Hitler Slept Late and other blunders that cost him the war By James P. Duffy. London: Praeger. 1991.176pp. £17.50.

Alliance within the alliance: Franco‐German Military Cooperation and the European Pillar of Defense By David G. Haglund. Boulder: Westview Press, 1991. 213 pp.

Homeward Bound? Allied Forces in the New Germany Edited by David G. Haglund and Olaf Mager. Boulder: Westview Press, 1992. 299 pp. £24.95

Avoiding War: Problems of crisis management By Alexander L. George (ed.), Westview Press, 1991. 590 pp. £16.95.

The Future of NATO: Facing an Unreliable Enemy in an Uncertain Environment By S.N. Drew et al. Praeger Publishers, New York, 1991. pp. 206.

Parliament and international relations Edited by Charles Carstairs and Richard Ware. Milton Keynes: Open University Press, 1991. 195 pp. £12.99 (paperback)