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Demonstrates active vasomotion as it occurs in arterioles, terminal arterioles, and precapillary sphincters and as it affects the capillary bed in a bat's wing.
Introductory scenes show the techniques used for mounting bats and recording the circulation in their wings. A view of the general distribution of the vascular components is followed by more detai...
Behavior of blood and vascula...; Behavior of blood & vascular
Date:
1948
Summary:
Detailed reactions of the minute vessels and the blood which modify the flow through these regions are demonstrated by high magnification of a bat's wing. The form and behavior of the platelets wit...
Defines and discusses subject matter and content on art. Illustrates these concepts with pictures, prints, sketches, and selections from literature. Includes a brief discussion of art forms in whic...
Since the presidency of Franklin Roosevelt, the first 100 days of an administration has been used as a measuring stick to estimate the ability of a new president to govern. This is still true today...
When you come across a challenge, what is your first impulse? To add or subtract? And what does it really mean to subtract?
In this episode, University of Virginia professor Leidy Klotz helps us u...
Episode 8 from Bread and Butterflies, a project in career development for nine-to-twelve-year-olds. Based on two years of planning by educators and broadcasters, the project included 15-minute colo...
Shows the ecological succession of animal and plant life in the sand dune area at the southern end of Lake Michigan beginning with the sand washed ashore and ending with this region's climax forest...
Summarizes the American nominating process from the early days to the emergence of the two-party system between 1830 and 1860 and the main political developments through 1952. Shows key Republican...
