ID 137496365 © Sinhyu282 | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
anatomy arteries atria atrium background biology blood body cardiac cardiology cell classroom concept connective cuts disease education epithelium equipment exercise experiment fiber health healthy heart histology human internal laboratory laboratoryn medical medicine muscle muscles muscular nucleus organ oxygen parts patient physical physiology pig pulmonary red research science scientific smooth structure structures study system test tissue valves veins white