Blood coagulation cascade, artwork
Blood coagulation cascade. Artwork of the biochemical cascade of blood chemicals and proteins during blood clotting (coagulation). The blood vessel and its layered wall is at upper left. The main diagram shows a clot forming at the damaged area (upper right). This occurs via reaction chains known as pathways mediated by factor X proteins (red spheres). The extrinsic pathway (down centre, blue arrows) and intrinsic pathway (down left, yellow arrows) unite in the common pathway (up right, from thrombin, yellow sphere) to form the blood clot. This consists of fibrin (yellow trefoils), platelets (pink puzzle pieces), red blood cells (red discs), and white blood cells (light blue spheres).
© JOSE ANTONIO PE
Chinese acupuncture model
Chinese acupuncture model. Foot of a Chinese acupuncture model, with marking and numbers and labels to show the acupuncture points and lines (meridians). Acupuncture is a traditional Chinese system of medicine. It claims that meridians act as channels for flowing life force or Qi. Each of the meridians is believed to connect through internal pathways to one of the internal organs. Diseases are considered to be due to interruptions in the flow of Qi. Inserting needles into the correct points is thought to restore the flow and cure disease.
© DONCASTER AND BASSETLAW HOSPITALS/SCIENCE PHOTO LIBRARY
'Jesus said, Were there not ten cleansed? But where are the nine?', mid 19th century
'Jesus said, Were there not ten cleansed? But where are the nine?', mid 19th century. Biblical scene, from Luke 17: 17: 'And Jesus answering said, Were there not ten cleansed? but where are the nine? Was no one found except this foreigner to return and give glory to God?' Jesus performs the miracle of healing ten lepers, but only one man returns to thank him. Engraving after 'Christ Healing the Paralytic', a painting made c1619 by Anthony van Dyck, in the Royal Collection.
© The Print Collector/Heritage Images