10 most difficult blood riddlesMedicine quiz
What cells are responsible for the production of blood thrombocytes?
Thrombocytes are a component of blood whose function is to stop bleeding by clumping and clotting blood vessel injuries. Mammalian thrombocytes have no cell nucleus: they are fragments of cytoplasm that are derived from the megakaryocytes of the bone marrow, and then enter the circulation.
What chemical element gives the blood of a lobster and octopus a bluish tint?
Lobsters,octopus, snails, spiders and other creepy-crawlies have blood that uses copper for oxygen transport. This is called Hemocyanin. Oxygenation causes a color change between the colorless Cu deoxygenated form and the blue Cu oxygenated form. Vertebrates like humans , have iron based blood.
Which of the following hormones is secreted by the kidneys?
Erythropoietin is secreted by the kidney in response to cellular hypoxia, and stimulates red blood cell production in the bone marrow. The other three are secreted by the adrenal gland.
Which protein causes blood to clot?
In order to reduce the loss of blood and facilitate the recovery of the blood vessel at the site of the injury, a blood clot is formed. It is made up of platelets and dissolved plasma protein-fibrogen. By the substance released by the blood-thrombin plate, fibrogen changes into fibrin, which creates a dense network at the site of injury.
Where was the first Blood Bank in the world created?
in New York
In 1937 Bernard Fantus, director of therapeutics at the Cook County Hospital in Chicago, established the one of the first hospital blood bank in the United States. In creating a hospital laboratory that preserved, refrigerated and stored donor blood, Fantus originated the term "blood bank".
The Rh blood group system was discovered by Karl Landsteiner and Alexander S. Wiener. With whose blood were they experimenting?
Karl Landsteiner's sick daughter
Prisoners of Auschwitz
"Rh" stands for "Rhesus". Due to its relatively easy upkeep in captivity and anatomical closeness to humans, rhesuses have been used extensively in medical research.
In Greek mythology, what is the blood of gods called?
Ichor was the ethereal fluid that flowed in the veins of gods and immortals. It also ran through the single vein of Talos, a giant bronze man with wings, responsible for guarding Europa in Ancient Crete.
What is the shape do erythrocytes in human blood?
Oval convex discs
One-sided convex disc
Oval biconcave disks
In humans, mature red blood cells are flexible and oval biconcave discs. They lack a cell nucleus and most organelles, in order to accommodate maximum space for hemoglobin; they can be viewed as sacks of hemoglobin, with a plasma membrane as the sack. Approximately 2.4 million new erythrocytes are produced per second in human adults.