StraighterLine Anatomy and Physiology II - Chapter 19 Blood Exam Questions and Answers

StraighterLine Anatomy and Physiology II - Chapter 19 Blood Exam Questions and Answers The only formed elements that possess a nucleus when mature are the: a. thrombocytes b. erythrocytes c. leukocytes d. platelets e. RBCs -Correct Answer-c. leukocytes In the platelet release reaction, a. factor XII is activated b. ADP and thromboxanes stimulate other platelets to become activated c. activated platelets are connected by fibrinogen d. prostaglandin production is inhibited e. platelets convert to fibrin -Correct Answer-b. ADP and thromboxanes stimulate other platelets to become activated Which of the following is NOT a form of hemoglobin found in the developing human? a. adult b. embryonic c. adolescent d. fetal -Correct Answer-c. adolescent Healing after clot formation involves a. clot retraction. b. repair of the damaged blood vessel by connective tissue cells. c. clot dissolution. d. serum being squeezed out of the clot. e. All of these choices are correct. -Correct Answer-e. All of these choices are correct When defective erythrocytes are broken down, a. they are removed from the blood by the lungs. b. bilirubin is formed from the breakdown of hemoglobin. c. their heme groups are converted into amino acids. d. their iron is excreted into the small intestine. e. their components cannot be recycled. -Correct Answer-b. bilirubin is formed from the breakdown of hemoglobin The hematocrit is a. an estimate of blood flow/hour. b. the number of WBCs per mm3. c. the amount of hemoglobin by weight in the blood. d. the percentage of RBCs in a given volume of blood. e. the number of RBCs in the body. -Correct Answer-d. the percentage of RBCs in a given volume of blood When a person develops a sore throat, white blood cells are drawn to the area of infection by a process called a. chemotaxis. b. diapedesis. c. margination. d. ameboid movement. e. attraction. -Correct Answer-a. chemotaxis The function of plasmin is to a. hydrolyze fibrin. b. activate factor XII. c. promote platelet plug formation. d. control osmotic pressure of the blood. e. promote the formation of plasma. -Correct Answer-a. hydrolyze fibrin Which of the following would lead to increased erythropoiesis? a. increased environmental O2 le