Mitochondrial respiration.

London : University of London Audio-Visual Centre, 1975.

1 encoded moving image.

00:30:30

University of London

Unrestricted

CC-BY-NC

Creative Commons Attribution-Non-Commercial 2.0 UK: England & Wales

In English

Presented by Dr Michael Thorn, Department of Biochemistry, St Thomas's Hospital Medical School. Produced by David R Clark. Made by University of London Audio-Visual centre.

This video is one of around 310 titles, originally broadcast on Channel 7 of the ILEA closed-circuit television network, given to Wellcome Trust from the University of London Audio-Visual Centre shortly after it closed in the late 1980s. Although some of these programmes might now seem rather out-dated, they probably represent the largest and most diversified body of medical video produced in any British university at this time, and give a comprehensive and fascinating view of the state of medical and surgical research and practice in the 1970s and 1980s, thus constituting a contemporary medical-historical archive of great interest. The lectures mostly take place in a small and intimate studio setting and are often face-to-face. The lecturers use a wide variety of resources to illustrate their points, including film clips, slides, graphs, animated diagrams, charts and tables as well as 3-dimensional models and display boards with movable pieces. Some of the lecturers are telegenic while some are clearly less comfortable about being recorded; all are experts in their field and show great enthusiasm to share both the latest research and the historical context of their specialist areas.

Segment 1 Dr Thorn describes how our respiration changes when we exercise and shows the results of polarographic readouts detailing changes in respiration during exercise. Time start: 00:00:00:00 Time end: 00:05:11:13 Length: 00:05:11:13

Segment 2 Thorn refers to studies done into the relationship between mitochondria and respiration. Time start: 00:05:11:13 Time end: 00:09:11:22 Length: 00:04:00:09

Segment 3 Thorn shows further experiments using polarographic readings and describes in detail how changes in oxygen molecules can be observed during exercise. Time start: 00:09:11:22 Time end: 00:15:41:00 Length: 00:06:29:03

Segment 4 Further polarographic studies are shown, this time detailing an experiment in which a mitochondrial suspension is added to cells and respiration rates measured. Time start: 00:15:41:00 Time end: 00:20:29:00 Length: 00:04:48:00

Segment 5 Thorn shows the results of two further experiments concering interference treatments on the enzyme system. Again, he refers to readings from a polarograph. Time start: 00:20:29:00 Time end: 00:24:09:00 Length: 00:03:40:00

Segment 6 Thorn ends with the results of a final experiment showing how motochondria, which have been subjected to hypotonic conditions at room temperature, respire. Time start: 00:24:09:00 Time end: 00:30:30:10 Length: 00:06:21:10