Top 10 blood factsHuman anatomy quiz
What color is octopus blood?
Blue. Both squids and octopuses have blue blood. They use an oxygen-carrying molecule in their blood called hemocyanin that contains copper. In cold conditions with low oxygen pressure, hemocyanin oxygen transportation is more efficient than haemoglobin oxygen transportation.
The Rh blood group system was discovered by Karl Landsteiner and Alexander S. Wiener. With whose blood were they experimenting?
Rhesus Macaque. "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.
Which blood group is known as "universal donor"?
0. Type O blood can be given to anyone, as it lacks both anti-A and anti-B antibodies.
Which blood type is the least common?
AB- AB is the rarest of all AB0 types, and Rh- is always less common than Rh+. In Western Europe, only 1% of the population has AB-. In the Eastern Asia Rh- is very rare: in Japan, only 0,05% of the population has AB-.
Which protein causes blood to clot?
Fibrinogen. 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.
What is the shape do erythrocytes in human blood?
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.
What chemical element gives the blood of a lobster and octopus a bluish tint?
Copper. 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 blood cells contain hemoglobin?
Erythrocytes. Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells (erythrocytes). It carries oxygen from the respiratory organs (lungs or gills) to the rest of the body.
How much percent of the water is in plasma?
90%. Plasma, a component of blood, is an aqueous solution.
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.