Blood: Definitions - Erythrocytes 12.2 Flashcards
Biconcave
Both sides are indented (sunken in). Applies to rbcs.
Bilirubin
Bilirubin A yellow-green pigment released when erythrocytes are destroyed.
Blood gases
Gases found in the bloodstream – Oxygen, carbon dioxide and nitrogen.
DNA
Contains genetic material to make new cells, organelles, repair damage,…
Epiphysis
The ends of long bones, where red bone marrow is found.
Erythrocyte
Commonly called a red blood cell.
Erythropoiesis
Production of red blood cells (erythrocytes).
Erythropoietin
The hormone that is produced by the kidneys when blood levels of oxygen fall. Hormone targets the bone marrow and stimulates stem cells to produce erythrocytes.
Hematocrit
Spun down blood; Percentage of rbcs in a volume of blood.
Hematopoietic Stem Cell
A cell that can make rbcs, most wbcs and platelets.
Heme group
Ring-shaped molecule that has an iron atom (Fe) in its center.
Hemoglobin
A red iron containing pigment found in erythrocytes.
Hemolysis
The breaking apart of red blood cells releasing hemoglobin and an empty plasma membrane into the blood stream.
Hormones
Chemicals secreted by endocrine glands.
Jaundice
A high level of bilirubin in the blood. The “sclera” of the eye or the skin may be colored yellow as a sign of a high level of bilirubin.
Mitosis
Cell division to produce new cells in the body by producing two exact daughter cells.
Red bone marrow
Located in the epiphyses of the adult bones and between flat bones.
Stem Cell
A cell that can make many different cell types.
Oxyhemoglobin
Hemoglobin that has just been filled with oxygen from the lungs and is travelling to the tissues.
