PHLEBOTOMY NATIONAL EXAM (NHA) Questions and Verified Answers

Characteristics imperative to a phlebotomist - Dependability, honesty, integrity, empathy and compassion, professional appearance, interpersonal skills Circulatory system function - deliver oxygen, nutrients, hormones, & enzymes to cells and transport cellular waste (CO2) to organs where they can be expelled The two circulations - Pulmonary & Systemic Pulmonary circulation - carries deoxygenated blood from the right ventricle to the lungs and returns oxygenated blood from lungs to left atrium Where does oxygenation take place in the lungs? - alveoli Systemic circulation - carries oxygenated blood from left ventricle throughout the body Upper chambers of the heart - right and left atria lower chambers of the heart - right and left ventricle tricuspid valve - atrioventricular valve, situated between right atrium and right ventricle **to remember this valve is on the right side of the heart-- people TRY to be RIGHT pulmonic valve - semi-lunar valve situated between the right ventricle and the pulmonary artery Mitral valve (or bicuspid) - atrioventricular valve located between the left atrium and left ventricle aortic valve - semi lunar valve situated between the left ventricle and aorta Flow of blood through the heart - Superior and Inferior Vena Cavae Right atrium tricuspid valve right ventricle pulmonic valve pulmonary artery lungs pulmonary vein left atrium mitral (bicuspid) valve left ventricle aorta rest of body Three layers of the heart - Endocardium, myocardium, epicardium Blood vessels - arteries, arterioles, capillaries, venules, veins, superior & inferior vena cavae aorta, arteries, and arterioles carry_____ blood _______ the heart - oxygenated & away from venules, veins, and superior and inferior vena cave carry _____ blood ________ the heart - deoxygenated & back to The average adult has ______ liters of blood - 5-6 Plasma comprises how much of circulating blood? - 55% Plasma contains.... - proteins, amino acids, gases, electrolytes, sugars, hormones, minerals, vitamins, and water What percent of plasma is water? - 92% Formed elements comprise what percent of circulating blood? - 45% another name for red blood cells... - Erythrocytes What makes up the formed elements? - Red blood cells, White blood cells, and platelets Another name for white blood cells... - leukocytes