Blood bone marrow in a process called hematopoiesis, which includes erythropoiesis, the production of red blood cells; and myelopoiesis, the production of white blood cells and platelets. During childhood, almost every human bone produces red blood cells; as adults, red blood cell production is limited to the larger bones: the bodies of the vertebrae, the breastbone (sternum), the ribcage, the pelvic bones, and the bones of the upper arms and legs. In addition, during childhood, the thymus gland, found in the mediastinum, is an important source of T lymphocytes. The proteinaceous component of blood (including clotting proteins) is produced predominantly by
The Bones of What You Believe States. "The Bones of What You Believe" received mostly positive reviews from music critics. At Metacritic, which assigns a weighted mean rating out of 100 to reviews from mainstream critics, the album received an average score of 80, based on 39 reviews, indicating "generally favorable reviews". Kyle Ryan of "The A.V. Club" complimented Mayberry's songwriting and wrote that Chvrches "have crafted one of the year's best albums, which means that buzz won't be dying down any time soon." Joe Rivers of "Clash" lauded the album as "an exceptionally strong debut where every track is a potential single", noting that "[n]ot