caption: Gills (in Fish) Gills have a highly-folded feathery structure
exif: {"Image DocumentName": "Gills (in Fish) Gills have a highly-folded feathery structure", "Image ImageDescription": "Gill filaments are hair-like projections. Filaments extend off 3-7 gill arches. Lined with capillaries (smallest blood vessels) Counter current for efficient gas exchange. Operculum. Flap that covers/protects gills. Opens when water is pushed through gills. Buccal cavity (mouth) Forces water past gills.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}