Risultati di ricerca
19 apr 2024 · In humans, blood is an opaque red fluid, freely flowing but denser and more viscous than water. The characteristic colour is imparted by hemoglobin, a unique iron-containing protein. Hemoglobin brightens in colour when saturated with oxygen (oxyhemoglobin) and darkens when oxygen is removed (deoxyhemoglobin).
26 apr 2024 · red blood cell, cellular component of blood, millions of which in the circulation of vertebrates give the blood its characteristic colour and carry oxygen from the lungs to the tissues. The mature human red blood cell is small, round, and biconcave; it appears dumbbell-shaped in profile.
1 mag 2024 · Hemoglobin ( haemoglobin, [a] Hb or Hgb) is a protein containing iron that facilitates the transport of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, [3] with the exception of the fish family Channichthyidae. [4]
3 giorni fa · Since red is the color of blood, it has historically been associated with sacrifice, danger, and courage. Modern surveys in Europe and the United States show red is also the color most commonly associated with heat, activity, passion, sexuality, anger, love, and joy.
2 giorni fa · What's your blood type? In this programme we’ll be finding out all about blood – why humans have different blood types and whether blood is something more than just a way of pumping oxygen...
26 apr 2024 · Changes in the color of your blood during your period are normal. Dark red, brown, or black period blood is typically red blood that has reacted with oxygen. Talk to your healthcare provider if you have grayish or pink watery discharge, as this could be a sign of an infection or something more serious
23 apr 2024 · Hematite, heavy and relatively hard oxide mineral, ferric oxide, that constitutes the most important iron ore because of its high iron content (70 percent) and its abundance. Its name is derived from the Greek word for ‘blood,’ in allusion to its red color. Learn more about hematite in this article.
