Serous fluid major salivary glands produce mixed (serous and mucus) saliva. Another type of serous fluid is secreted by the serous membranes (serosa), two-layered membranes which line the body cavities. Serous membrane fluid collects on microvilli on the outer layer and acts as a lubricant and reduces friction from muscle movement. This can be seen in the lungs, with the pleural cavity. Blood serum is the component of blood that is neither a blood cell, nor a clotting factor. Blood serum and blood plasma are similar, but serum does not contain any clotting factors, such as fibrinogen, prothrombin, thromboplastin and many others.
Greatest Hits (Blood, Sweat & Tears album) Greatest Hits (Blood, Sweat & Tears album) Greatest Hits is a compilation album by the band Blood, Sweat & Tears, initially released in 1972. Although Blood, Sweat & Tears continued to record and tour for several more years, the band's lineup changed dramatically after "Blood, Sweat & Tears 4". This compilation album includes all of the group's best-known material up to that time. This was the group's last album to earn a Gold Record award. Columbia initially chose to incorporate the edited single versions of many of the songs, a decision which was poorly received by some fans. Some later