File:Direct-visualization-of-hemolymph-flow-in-the-heart-of-a-grasshopper-(Schistocerca-americana)-1472-6793-9-2-S1.ogv

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Direct-visualization-of-hemolymph-flow-in-the-heart-of-a-grasshopper-(Schistocerca-americana)-1472-6793-9-2-S1.ogv ‎(Ogg Theora video file, length 19 s, 640 × 480 pixels, 5.4 Mbps, file size: 12.04 MB)

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English: Synchrotron x-ray phase-contrast video of heartbeat in the grasshopper Schistocerca americana. Movie depicts the grasshopper's 8th abdominal segment in lateral view, with dorsal oriented upward and anterior to the right. Field of view is 1.3 × 0.9 mm. The dorsal edge of the abdomen can be seen at the top. The diagonal lines running from upper left to lower right are margins of the x-ray transparent Kapton tube. In this sequence, pulsatile movements in the dorsoventral axis associated with heartbeat can been seen, but flow within the heart is not apparent due to lack of contrast between hemolymph and the surrounding tissue. Large collapsing circular structures are air sacs. Tracheal tubes are also visible, particularly the two main tubes running horizontally at the bottom of the frame.
Date
Source Lee W, Socha J (2009). "Direct visualization of hemolymph flow in the heart of a grasshopper (Schistocerca americana)". BMC Physiology. DOI:10.1186/1472-6793-9-2. PMID 19272159. PMC: 2672055.
Author Lee W, Socha J
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This file was transferred to Wikimedia Commons from PubMed Central by way of the Open Access Media Importer.
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Date/TimeThumbnailDimensionsUserComment
current08:44, 5 June 201319 s, 640 × 480 (12.04 MB)Open Access Media Importer Bot (talk | contribs)Automatically uploaded media file from Open Access source. Please report problems or suggestions here.

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Format Bitrate Download Status Encode time
VP9 480P 1.17 Mbps Completed 11:49, 24 August 2018 49 s
Streaming 480p (VP9) 1.17 Mbps Completed 15:11, 5 February 2024 2.0 s
VP9 360P 593 kbps Completed 11:49, 24 August 2018 34 s
Streaming 360p (VP9) 594 kbps Completed 20:54, 6 February 2024 1.0 s
VP9 240P 297 kbps Completed 11:50, 24 August 2018 1 min 3 s
Streaming 240p (VP9) 298 kbps Completed 22:44, 16 December 2023 1.0 s
WebM 360P 510 kbps Completed 08:45, 5 June 2013 48 s
Streaming 144p (MJPEG) 1.11 Mbps Completed 09:58, 3 November 2023 1.0 s

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