segmentation--the annelid worms - part 8 of 28. describes the structure and functions of the segmented worm body systems, and shows that the segmented annelid worm body plan represents an important evolutionary development. the major classes of the phylum - 咽頭 個影片檔及 b 捲影像00:32
segmentation--the annelid worms - part 7 of 28. describes the structure and functions of the segmented worm body systems, and shows that the segmented annelid worm body plan represents an important evolutionary development. the major classes of the phylum - 咽頭 個影片檔及 b 捲影像00:35
digital visualization of a man's chest x-ray. digital scanning of the human body with visualization of the lungs, skeleton and skin in the form of an x-ray - 咽頭 個影片檔及 b 捲影像00:24人體構造
three-dimensional visualization of a digital x-ray of the human chest. in the area of the human lungs, a red color pulsates, indicating a health problem in the human pulmonary system. the concept of lung health, colds and viral diseases. - 咽頭 個影片檔及 b 捲影像00:24
4k footage close up view of inside oral cavity when doctor with protective suite swab oral cavity for flu/covid-19 test. - 咽頭 個影片檔及 b 捲影像00:13
4k footage close up view of inside oral cavity when doctor with protective suite swab oral cavity for flu/covid-19 test. - 咽頭 個影片檔及 b 捲影像00:08
