BIOL251 W3 Unit Exam 1

1. Question: Hormones produced and released from sex organs include which of the following? 2. Question: In contrast to the nervous system, the endocrine system uses only one method of communication: _________ signaling. 3. Question: Hormones regulate certain target cell responses. These can include which of the following? 4. Question: One of the major functions of the adrenal glands is to respond to ________. 5. Question: The beta cells of the pancreatic islets produce and secrete __________. 6. Question: The hormones of the human body can be divided into which of the following major group(s)? 7. Question: The parathyroid glands are small structures located on the posterior thyroid gland that produce parathyroid hormone (PTH), which regulates blood ________ levels. 8. Question: The adrenal gland consists of an outer cortex of ________ tissue and an inner medulla of ________ tissue. 9. Question: The gonads produce what class of hormones? 10. Question: The development of a goiter indicates that ________. 11. Question: The signaling done by the endocrine system is accomplished by the use of chemicals called _______. 12. Question: Cushing's disease is a disorder caused by ________. 13. Question: Which of the following can result from hyperparathyroidism? 14. Question: The female's uterus secretes the following hormone: 15. Question: Which of the following statements about insulin is true? 16. Question: Which of the following is true of leukocytes? 17. Question: What is the most common leukocyte in the human body? 18. Question: Which of the following is/are important in the process named coagulation? 19. Question: What is meant by the term anemia? 20. Question: The total life span of an erythrocyte: 21. Question: Which of the following is the primary function of red blood cells? 22. Question: Which of the following is/are true of platelets? 23. Question: The most common blood type of all Americans is which of the following? 24. Question: The term hematocrit is a measure of the percentage of red blood cells (RBCs) in a sample of blood. Which of the following statements is true? 25. Question: Which of the following is/are true of the molecule named hemoglobin? 26. Question: Lymphocytes can be classified in the following group or groups: 27. Question: The blood type of a person's blood depends on which of the following factors? 28. Question: The pH of a liquid is a measure of its acidity or alkalinity. The normal range of pH of blood is: 29. Question: Which of the following is/are true of red blood cells? 30. Question: What is the typical lifespan of a leukocyte? 31. Question: Which of the following statements is/are correct when describing heart sounds? 32. Question: The opening of any heart valve only occurs when: 33. Question: The QRS-complex of an ECG represents which of the following: 34. Question: One of the most important ways of investigating the function of the heart is called the "cardiac output." Which of the following facts is/are true? 35. Question: Which of the following statements about the internal structure of the heart is/are correct? 36. Question: Which of the following statements about valves in the heart is/are true? 37. Question: Which of the following statements about the circulatory system is/are correct? 38. Question: In case of damage to the SA node, there are other sites in the heart which can depolarize and establish a rate of contraction of the cardiac muscle cells. For example: 39. Question: Let the left atrium = 1; the right atrium = 2; the left ventricle = 3; the right ventricle = 4. Blood then would flow through the heart in the following order 40. Question: Which of the following statements about the left ventricle is/are true? 41. Question: A pacemaker, which depolarizes spontaneously, establishes the rate of contraction of the heart muscle. The most common pacemaker of the heart 42. Question: Which of the following parts of an ECG represents the depolarization of the atria? 43. Question: A cardiac muscle cell is: 44. Question: The period of time that begins with contraction of the atria and ends with ventricular relaxation is known as 45. Question: By careful placement of surface electrodes on the body, it is possible to record the complex, compound electrical signal of the heart. This tracing of the electrical signal is the electrocardiogram (ECG). Which of the following statements is/are true? 46. Question: The specific fibers which spread the electrical impulse to the cardiac muscle fibers are called: 47. Question: Which of the following statements are considered to be normal? 48. Question: Which of the following statements is/are true? 49. Question: Which of the following statement(s) is (are) true? 50. Question: The arteries that supply blood to the myocardium of the heart are called: