hlebotomy Medca Exam 2024 questions and answer

Color coding of needles indicates - ANSWERS Guage What does a blood cell count require - ANSWERS Whole blood collected in a purple top tube The preferred anticoagulant for the collection of whole blood for STAT situations in a clinical laboratory - ANSWERS Herapin main cells of the immune system - ANSWERS White blood cells Plasma makes up what percent of the blood tissue - ANSWERS 55% Normal pulse rate of a 9 year old - ANSWERS 75-110 BPM When is a diastolic heart sound heard - ANSWERS when the heart relaxes What are the formation of blood cells that start in the bone marrow - ANSWERS Stem cells True or False White blood cells contain chromosomes - ANSWERS True What are developing red blood cells also called - ANSWERS Reticulocytes How many red blood cells are produced per second - ANSWERS About 2 million Amount of time it takes for red blood cells to mature - ANSWERS 7 days Most numerous blood cells in the body - ANSWERS Red blood cells When pH level is lowered it makes the blood more..? - ANSWERS Acidic True or False The Monoject Monoletter is a safety device for capillary blood collection - ANSWERS True When performing an arterial puncture, the artery should be punctured at what degree angle? - ANSWERS 90 degrees Where is blood pressure measured? - ANSWERS inside the elbow True or False Red blood cells contain a nucleus - ANSWERS False Red blood cells are the bodys major way of delivering what to the bodys tissues? - ANSWERS Oxygen What happens as the circulating blood moves away from the heart? - ANSWERS The blood pressure decreases For newborns the penetration depth of lancets for blood collection must be less than..? - ANSWERS 2.0 mm To chill a blood specimen as it is being transported the health care worker should carry the specimen in what? - ANSWERS Icy water A blood donor candidate must weigh at least what amount - ANSWERS 110 pounds What gauge needle is used for blood donation - ANSWERS 16 gauge Prolonged tourniquet application can lead to - ANSWERS tissue and nerve damage A tourniquet should not be on a patient for more than..? - ANSWERS 2 minutes Where in the body is the blood made - ANSWERS bone marrow Blood makes up what percent of the body weight - ANSWERS 8% Process of the removal of old and defective red blood cells - ANSWERS Eryptosis Bradycardia is when pulse drops below..? - ANSWERS 60 BPM How many layers do veins have - ANSWERS Two How many layers do arteries have - ANSWERS Three Where are reserve platelets stored? - ANSWERS In the spleen Small vessels located in the liver, spleen, & bone marrow - ANSWERS Sinusoids White blood cells that are responsible for allergic reactions - ANSWERS Baspohils If blood specimen has a separation device, how many times should it be centrifuged - ANSWERS Once Color coding of needles indicates - ANSWERS Guage