Literaturnachweis - Detailanzeige
| Autor/in | Stephens, Philip J. |
|---|---|
| Titel | Using a Phototransduction System to Monitor the Isolated Frog Heart |
| Quelle | In: American Biology Teacher, 77 (2015) 6, S.441-444 (4 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0002-7685 |
| Schlagwörter | Science Instruction; Biology; Anatomy; Physiology; Animals; Science Activities; Metabolism; Science Laboratories; Science Process Skills; Laboratory Equipment; Demonstrations (Educational) |
| Abstract | A simple and inexpensive method of monitoring the movement of an isolated frog heart provides comparable results to those obtained with a force transducer. A commercially available photoresistor is integrated into a Wheatstone bridge circuit, and the output signal is interfaced directly with a recording device. An excised, beating frog heart is placed in a Petri dish and over the photoresistor so that movements produced during the heartbeat cycle change the amount of light entering the photoresistor and, therefore, the voltage output from the circuit. Experiments that can be done with this system include the effects of temperature and dose-response relationships with Ringer's solutions containing acetylcholine and norepinephrine. (As Provided). |
| Anmerkungen | University of California Press. 2000 Center Street Suite 303, Berkeley, CA 94704. Tel: 510-643-7154; Fax: 510-642-9917; e-mail: customerservice@ucpressjournals.com; Web site: http://www.ucpressjournals.com/journal.php?j=abt |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2020/1/01 |
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