study guide for MedCA Exam 2023 with verified solutions

1. when blood is removed from the body,the blood clots and the liquid portion is called serum 2. if veins in the arm cannot be used for veinipunc- ture, the alternative veins lie in the dorsal side of the hands and wrist 3. the instrument used to speed the removal of serum by spinning the blood is called a centrifuge 4. before performing a venipuncture,a pair of clean gloves should be put in the presence of a patient because it is a reassuring saftyt-conscious ges- ture for both the patient and the worker 5. the supine position refers to lying face up on their back 6. to avoid-clotting in the blood collection tube,it is extremely important that the blood collected in a purple topped tube be gently inverted a minimum of eight times 7. the blood PH range of the normal body is 7.35-7.45 8. serum should be transported to the laboratory for testing and separated from blood cells within 2 hrs 9. liquid makes up 55% of the total volume of the blood 10. a person who has too little hemoglobin or a de- creased number of red blood cells is known to be anemic 11. the blood cells begin their formation in the lymph nodes and bone marrow 12. if the phlebotomist collects blood in the neonatol- ogy department, the patient is hours to a few days old 13. the iron containing pigment of the red blood cells is called hemoglobin 14. once they enter the bloodstream mature red blood cells live approximately 120days 15. the body contains approximately 5liters of blood 16. the study of the nature and cause of disease is known as 17. a specially labeled puncture-resistant container for the disposal of needles, scalpel, and syringes is known as a pathology Sharp's container 18. when drawing blood the vein that is most preferred is the median cubital 19. if the blood pressure read as120/80 the 120 is the systolic pressure 20. the systolic pressure is the pressure when the heart is con- tracted 21. a chemical substance that prevent the blood from clotting is call an anticoagulant 22. Homestasis refers to the steady state condition 23. handwritten information cannot be coverted into barcode symbols 24. interstitial fluid is tissue fluid 25. fragile veins are most likely found in geriatr