BIOS 255 Week 4 Midterm Exam-Graded A

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1. Question : (TCO3) Which of the following is a major function of blood? Student Answer: production of enzymes production of neurotransmitters transduction of pressure protection against infecti... ous disease contractility Comments: Question 2. Question : (TCO3) Which of the following blood types is a person whose blood cells were not agglutinated by anti-A serum, anti-B serum, and anti-Rh serum Student Answer: AB negative AB positive O negative O positive A negative Comments: Question 3. Question : (TCO3) Which of the following formed elements in blood are removed by fixed macrophages in the spleen and liver after about 4 months in the circulation? Student Answer: erythrocytes thrombocytes monocytes basophils eosinophils Comments: Question 4. Question : (TCO3) A condition in which inadequate intake of vitamin B12 or folic acid cause production of large abnormal red blood cells is called Student Answer: hemorrhagic anemia aplastic anemia megaloblastic anemia pernicious anemia iron deficiency anemia Comments: Question 5. Question : (TCO3) Lymph is Student Answer: the same as plasma plasma without the clotting factors formed during the first step in blood clotting pulmonary interstitial fluid plasma without the albumins Comments: Question 6. Question : (TCO3) Which of the following precursor cells give rise to granular leukocytes? Student Answer: proerythroblasts megakaryoblast lymphoblast myeloblast none of the selections are correct Comments: Question 7. Question : (TCO3) Which of the following substances is an anticoagulant formed by mast cells and basophils? Student Answer: heparin fibrinogen thromboxane A2 prostacyclin plasmin Comments: Question 8. Question : (TCO3) Myeloid stem cells reside in Student Answer: the blood the yellow marrow the thymus gland the red marrow the spleen Comments: Question 9. Question : (TCO1) The membrane that surrounds and protects the heart is called the Student Answer: pericardium pleura myocardium mediastinum endocardium Comments: Question 10. Question : (TCO1) Stimulation of the sympathetic output to the heart would lead to Student Answer: a faster heart rate a slower heart rate no effects on cardiac output a ventricular block formation of new erythrocytes Comments: Question 11. Question : (TCO1) Which of the following hormones do not increase the heart rate? Student Answer: thyroid hormone norepinephrine epinephrine acetylcholine all of the above hormones Comments: Question 12. Question : (TCO1) The difference between a person’s maximum cardiac output and resting cardiac output is called the Student Answer: stroke volume peripheral resistance afterload cardiac reserve venous return Comments: Question 13. Question : (TCO1) The remnant of the foramen ovale in the adult heart is the Student Answer: foramen magnum interventricular septum fossa ovalis sinoatrial node atrioventricular node Comments: Question 14. Question : (TCO1) Which of the following chambers of the heart is surrounded by the thickest layer of myocardium? Student Answer: right atrium left atrium right ventricle left ventricle right auricle Comments: Question 15. Question : (TCO1) Which of the following electrocardiogram (ECG) waves represents ventricular repolarization? Student Answer: R wave Q wave P wave S wave T wave Comments: Question 16. Question : (TCO1) Elevated levels of _____ in the blood lead to reduced heart rate. Student Answer: potassium calcium epinephrine noradrenalin norepinephrine Comments: Question 17. Question : (TCO1) Which layer of the heart is the major contributor to the pumping action of the heart? Student Answer: myocardium epicardium endocardium pericardium serous pericardium [Show More]

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