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CHAPTER TWO Systems of the Body Multiple Choice Questions 1. The body’s physiological response so that it maintains a stable internal state is called a. coping b. adaptation c. homeostasis d. synaptic transmission e. equilibrium Answer: c Difficulty: easy Page: 29 Skill: recall 2. The nervous system that consists of the brain and the spinal cord is called the a. peripheral nervous system b. central nervous system c. afferent nervous system d. efferent nervous system e. somatic nervous system Answer: b Difficulty: easy Page: 30 Skill: recall 3. After exercising for twenty minutes, Mary notices that her heart rate has increased and she is sweating slightly. In this example, the homeostatic response of sweating occurs because a. Mary’s core temperature is elevated and she needs to cool down b. Mary is exercising and she needs to maintain an above normal body temperature to get the most benefit c. Mary is psychologically aroused d. Mary is breathing too rapidly and she needs to slow down e. Mary’s psychological experience has activated the circulatory system Answer: a Difficulty: moderate Page: 29 Skill: applied 16 4. Adjustments required by the body to maintain homeostasis are a. Short-term only b. Long-term only c. Short-term and rapid only d. Long-term and rapid only e. Short-term and rapid, or long-term Answer: e Difficulty: easy Page: 29 Skill: recall 5. James has been demonstrating high levels of anger in response to situations that are really very minor irritants. If this pattern continues, James’ blood pressure may become elevated and his homeostatic system would a. be antagonized by the psychological state of anger b. become overactive c. become irrelevant to the psychological response d. fail to operate e. activate the flight or fight response Answer: a Difficulty: difficult Page: 29 Skill: applied 6. It is important to remember that synaptic transmission and psychological state a. are unrelated in most cases b. have a reciprocal relationship, each influencing the other c. are only related in cases of multiple sclerosis and myasthenia gravis d. are positively correlated e. are negatively correlated Answer: b Difficulty: challenging Page: 29 Skill: applied 7. The autonomic nervous system consists of the a. peripheral and central nervous system b. somatic and peripheral nervous system c. sympathetic and parasympathetic nervous system d. somatic and sympathetic nervous system e. peripheral and parasympathetic nervous system Answer: c Difficulty: easy Page: 35 Skill: recall 17 8. Meningitis is best described as a. an inflammation of the brain b. a bacterial infection of the brain and spinal cord c. an infection of the fluid protecting the brain and spinal cord d. a viral infection of the meninges e. an infection of the brain resulting in irreversible brain damage Answer: c Difficulty: moderate Page: 31 Skill: recall 9. Which of the following is not a function of glial cells in the central nervous system? a. Provide the support system for neurons b. Provide nourishment to the neurons c. Help maintain neurons in proper physical orientation d. Act as sentinels for materials that enter the brain via the bloodstream e. Make up 90 percent of the cells in the central nervous system Answer: d Difficulty: moderate Page: 31 Skill: recall 10. Viral and bacterial meningitis differ in that a. bacterial meningitis (but not viral) can result in death b. viral meningitis (but not bacterial) can result in brain damage c. viral meningitis (but not bacterial) can result in hearing loss d. viral meningitis (but not bacterial) can result in learning disabilities e. bacterial (but not viral) often resolves itself without treatment Answer: a Difficulty: easy Page: 32 Skill: recall 11. The part of the brain responsible for controlling basic functions such as breathing is called the a. cerebellum b. brain stem c. thalamus d. hypothalamus e. cerebral cortex Answer: b Difficulty: moderate Page: 32 Skill: recall 18 12. Pierre was recently admitted to the hospital with a high fever, headache and stiff neck. To confirm a diagnosis of meningitis, the attending physician took a sample of spinal fluid. The test is called a a. Lumbar puncture b. Stress test c. Immunosuppression test d. Hepatitis B test e. Blood-brain barrier test Answer: a Difficulty: easy Page: 32 Skill: applied 13. Joshua, a first year university student, was diagnosed with viral meningitis. His worried parents can expect that a. Joshua may have brain damage as a result b. Joshua may have a resulting learning disability c. Joshua may not recover from the infection d. Joshua will never contract meningitis again e. Joshua will recover fully Answer: e Difficulty: moderate Page: 32 Skill: applied 14. The portion of the brain that initiates the stress response in both the nervous system and the endocrine system is the a. brain stem b. cerebellum c. thalamus d. hypothalamus e. cerebral cortex Answer: d Difficulty: moderate Page: 32 Skill: recall 15. Eleanor was in a car accident and suffered damage to her frontal lobes. Since that time she has had difficulty a. processing sensory information except for hearing and vision b. processing visual information c. processing auditory information d. processing language e. processing all sensory information Answer: d Difficulty: challenging Page: 33 Skill: applied 19 16. Mei-Lein recently suffered a stroke (cardiovascular accident) and is paralyzed on the left side of her body. The damage to the brain most likely occurred a. in the motor cortex in the left hemisphere b. in the motor cortex in the right hemisphere c. in the sensory cortex in the left hemisphere d. in the sensory cortex in the right hemisphere e. in the cerebellum Answer: b Difficulty: challenging Page: 34 Skill: applied 17. Alice was diagnosed as having a cerebral vascular accident or stroke and is no longer able to talk, although she seems to understand when others speak to her. She most likely suffered damage to a. the motor cortex b. the sensory cortex c. hypothalamus d. Broca’s area e. Wernicke’s area Answer: d Difficulty: challenging Page: 33 Skill: applied 18. Rajeev was injured in a diving accident where he damaged the vertebrae in his neck as well as his spinal cord. A psychologist is helping Rajeev cope with some of the problems related to his a. b. c. d. e. difficulty in moving the right side of his body difficulty in moving the left side of his body difficulty in moving all four limbs difficulty in moving his legs difficulty speaking Answer: c Difficulty: challenging Pages: 35 Skill: applied 19. Sensory afferents carry sensory information a. directly to the brain b. to the spinal cord c. directly to the brain and via the spinal cord d. from the brain to the spinal cord e. directly to the spinal cord and then to the brain Answer: c Difficulty: easy Page: 34 Skill: recall 20 20. The part of the brain that functions as the central control mechanism for homeostasis is the a. cerebellum b. brain stem c. hypothalamus d. thalamus e. sensory cortex Answer: c Difficulty: easy Page: 32 Skill: recall 21. Ischemic stroke describes a specific form of cardiovascular disease in which a. blood flow to the brain is blocked b. a blood vessel in the brain ruptures c. a blood vessel in the heart ruptures d. blood flow to the heart is blocked e. blood flow to the contralateral side of the body is blocked Answer: a Difficulty: moderate Page: 34 Skill: recall 22. Ischemic stroke and hemorrhagic stroke are both examples of a. coronary heart disease b. spinal cord injuries c. cerebrovascular accidents d. chronic obstructive pulmonary disease e. autonomic nervous system dysfunction Answer: c Difficulty: easy Page: 34 Skill: recall 23. The efferent pathways of the peripheral nervous system that operate voluntarily are the responsibility of the a. central nervous system b. autonomic nervous system c. somatic nervous system d. parasympathetic nervous system e. sympathetic nervous system Answer: c Difficulty: moderate Page: 34 Skill: recall 21 24. Zara is very anxious about her history midterm. On the day of the midterm, she feels queasy, has butterflies in her stomach and doesn’t feel like eating breakfast. Zara is experiencing a. the sympathetic nervous system overriding the parasympathetic nervous system b. the parasympathetic nervous system overriding the sympathetic nervous system c. the autonomic nervous system overriding the central nervous system d. the central nervous system overriding the autonomic nervous system e. the peripheral nervous system overriding the central nervous system Answer: a Difficulty: moderate Page: 35 Skill: applied 25. Alexei just competed in a 100 meter dash at his high school. As soon as the race was over he could feel his heart rate and respiratory rate slowing down. Alexei is experiencing the effects of the _______________ nervous system which is calming the body down after the fight or flight response needed for the race. a. sympathetic b. parasympathetic c. central d. somatic e. peripheral Answer: b Difficulty: easy Page: 35 Skill: applied 26. The main distinction between the nervous system and the endocrine system response is that a. the nervous system exhibits slower responding than the endocrine system b. the endocrine system specializes in long term control c. the nervous system is under voluntary control d. the endocrine system is under voluntary control e. the nervous system but not the endocrine system helps to control growth and metabolism Answer: b Difficulty: moderate Page: 35 Skill: recall 27. The main control centres for the endocrine system are the a. hypothalamus and the pituitary gland b. thyroid and the adrenal gland c. hypothalamus and the adrenal gland d. pituitary and the thyroid gland e. pancreas and the pituitary gland Answer: a Difficulty: easy Page: 35 Skill: recall 22 28. Adrenocorticotropic hormone (ACTH) stimulates the __________ to produce _____________. a. adrenal gland; growth hormone b. pituitary gland; cortisol c. adrenal gland; cortisol d. hypothalamus; insulin e. pancreas; insulin Answer: c Difficulty: easy Page: 35 Skill: recall 29. The first line of defence in the immune system’s fight against antigens is the a. hypothalamus b. blood brain barrier c. skin and mucous membranes d. production of antibodies e. specific immune system Answer: c Difficulty: moderate Page: 37 Skill: recall 30. The three aspects necessary for effective specific immune function are a. memory, tolerance and specificity b. memory, motility and inoculation c. inoculation, memory, histamine d. inoculation, memory, tolerance e. acquisition, memory, tolerance Answer: a Difficulty: easy Page: 37 Skill: recall 31. Jack and Sylvia traveled to Cancun together. Sylvia had never been there before although Jack had made several trips to the area. After drinking the water, Sylvia became very ill while Jack did not. Sylvia likely became ill because she a. is lacking non specific immunity b. is lacking specific B lymphocytes c. has specific antibodies to pathogens in the water d. has an autoimmune disease e. has over reactive natural-killer cells Answer: b Difficulty: moderate Page 37 Skill: applied 23 32. The process whereby antibodies are produced by memory B cells when exposed to a specific previously encountered antigen is called a. immunosuppression b. interleukin production c. seroconversion d. non-specific immunity e. tolerance Answer: c Difficulty: moderate Page: 38 Skill: recall 33. The cells that produce substances called interleukins that speed the division of B lymphocyte cells are called a. Memory B-cells b. Helper T-cells c. Suppressor T-cells d. Natural killer cells e. Non-specific B-cells Answer: b Difficulty: easy Page: 38 Skill: recall 34. Every time Joan goes to the doctor, he takes her blood pressure. She insists that, although she is eighty, her blood pressure is fine. Joan probably does not realize that high blood pressure is a. asymptomatic b. the same as hypotension c. easy to cure d. a symptom of autoimmune disease e. caused from arrhythmia Answer: a Difficulty: easy Page: 41 Skill: applied 35. Cardiac arrhythmia can be brought on by all of the following except a. anxiety b. lack of sleep c. caffeine d. alcohol e. excessive sleep Answer: e Difficulty: easy Page: 41 Skill: recall 24 36. The left side of the heart muscle is thicker and stronger because a. it is responsible for pulmonary circulation b. it is pumping blood to the entire body c. systole is higher d. diastole is higher e. there are more contractile cells Answer: b Difficulty: easy Page: 40 Skill: recall 37. The contractile cells which bring about the pumping action of the heart muscle are themselves regulated by a. the aorta b. the pulmonary artery c. autorhythmic cells d. the ventricles e. the pulmonary capillaries Answer: c Difficulty: easy Page: 40 Skill: recall 38. Hypertension is generally considered to be blood pressure in excess of a. b. c. d. e. 160 systolic/100 diastolic mm Hg 175 diastolic/90 systolic mm Hg 140 systolic /90 diastolic mm Hg 100 systolic /50 diastolic mm Hg 90 diastolic/ 50 systolic mm Hg Answer: c Difficulty: moderate Page: 41 Skill: recall 39. External respiration involves all of the following except a. Cells using oxygen (O2) and producing carbon dioxide (CO2) b. breathing c. the exchange of oxygen and carbon dioxide between the lungs and the blood d. the transportation of oxygen and carbon dioxide e. the exchange of oxygen and carbon dioxide between the blood and tissue Answer: a Difficulty: moderate Page: 42 Skill: recall 25 40. The actual exchange of oxygen and carbon dioxide between the air and the blood largely takes place via the a. bronchi b. internal respiration c. alveoli d. lungs e. trachea Answer: c Difficulty: easy Page: 42 Skill: recall 41. Smoking is the main cause of a respiratory illness which results from damaged lung tissue causing large air pockets to be trapped in the lungs making breathing difficult. The respiratory illness in this case is a. upper respiratory infection b. emphysema c. lung cancer d. asthma e. pneumonia Answer: b Difficulty: easy Page: 43 Skill: recall 42. Laszlo was recently hospitalized with lobar pneumonia. This particular illness causes an inflammation of the a. bronchioles b. pulmonary capillaries c. upper respiratory tract d. alveoli e. airways Answer: d Difficulty: moderate Page: 43 Skill: applied 43. The digestive tract consists of all of the following parts except the a. salivary glands b. esophagus c. stomach d. large intestine e. small intestine Answer: a Difficulty: easy Page: 44 Skill: recall 26 44. The accessory digestive organs include all of the following except the a. salivary glands b. exocrine pancreas c. liver d. gall bladder e. lumen Answer: e Difficulty: easy Page: 44 Skill: recall 45. The four basic processes of the digestive system are a. motility, emesis, secretion, absorption b. mobility, secretion, digestion, excretion c. motility, secretion, digestion, absorption d. absorption, digestion, secretion, excretion e. absorption, digestion, secretion, defecation Answer: c Difficulty: easy Page: 44 Skill: recall 46. Vomiting (emesis) may be caused by all of the following except a. rotation of the head b. stimulation of the back of the throat c. psychological factors d. irritation of the small intestine a. intracranial pressure Answer: d Difficulty: moderate Page: 45-46 Skill: recall 47. Carmen has been suffering from bulimia nervosa. She engages in bouts of binge eating followed by purging where she deliberately empties the stomach contents. Carmen can produce this reflexive response by a. thinking about all the food she just ate b. accessing the connection between the throat stimulation and the vomit c. centre in the brain d. simulating intracranial pressure e. rotation or acceleration of the head f. remembering what it feels like to have motion sickness Answer: b Difficulty: easy Page: 46 Skill: applied 27 48. Psychological factors can contribute to the development of peptic ulcers by a. increasing the amount of H. pylori bacteria found in the stomach b. increasing stomach motility c. increasing the amount of pepsin d. decreasing the amount of mucous lining the stomach e. decreasing the amount of H. pylori bacteria found in the stomach Answer: c Difficulty: easy Page: 46 Skill: recall 49. Matt went to see his physician concerning recurrent stomach pain. The physician prescribed antibiotics for a diagnosis of peptic ulcer. The prescribed treatment should help because antibiotics have been shown to a. decrease the amount of pepsin in the stomach b. increase the amount of mucous lining the stomach c. decrease the H. pylori bacteria d. increase the amount of pepsin and thereby increase the speed of digestion e. increase the H. pylori bacteria needed for digestion Answer: c Difficulty: moderate Page: 46 Skill: applied 50. The soccer coach recommended that the team eat a meal of spaghetti one to four hours before the game. The reason for the recommendation is that a. motility will slow down considerably during the game b. carbohydrates move through the digestive system more quickly c. absorption will slow so that the energy source lasts for the entire game d. eating protein and fats before a game could result in excessive sweating e. eating protein and fats before a game could result in malabsorption Answer: b Difficulty: moderate Page: 46-47 Skill: applied 51. The inability to efficiently absorb nutrients from the digestive system may be caused by a. gluten enteropathy b. lactase intolerance c. renal failure d. monoglyceride formation e. excessive tryglycerides Answer: a Difficulty: easy Page: 47 Skill: recall 28 52. The kidneys function in all of the following ways except a. controlling extra-cellular fluids b. controlling electrolyte balance c. blood pressure regulation d. elimination of toxic waste material e. producing electrolytes Answer: e Difficulty: easy Page: 48 Skill: recall 53. The part of the urinary system that stores urine until it can be excreted is the a. urethra b. urinary bladder c. kidney d. ureter e. nephron Answer: b Difficulty: easy Page 48 Skill: recall 54. Yoko requires dialysis three times a week because of kidney failure. A health psychologist visits her weekly during the treatment because a. Yoko may need help coping with the challenges of kidney disease b. Yoko is also suffering from a mental illness related to kidney disease c. Yoko is waiting for a transplant and the health psychologist keeps her up to date as to where she stands on the recipient list d. Yoko is likely to refuse treatment due to its painful nature e. Yoko needs to be advised regarding her diet when on dialysis Answer: a Difficulty: easy Page 48 Skill: applied 55. A physician specializing in diseases of the kidneys is called a(n) a. oncologist b. nephrologists c. kidneyologist d. immunologist e. internist Answer: b Difficulty: easy Page 48 Skill: recall 29 56. The one system of the body that is least concerned about homeostasis is the a. cardiovascular system b. renal system c. urinary system d. respiratory system e. reproductive system Answer: e Difficulty: easy Page: 49 Skill: applied 57. Health Canada estimates that 90 % of deaths from ____________ cancer can be prevented by a screening test. a. prostate b. breast c. cervical d. uterine e. ovarian Answer: c Difficulty: moderate Page 51 Skill: recall 58. The part of the male reproductive system which aids in the production of sex hormones and secretions that allow for the transport of sperm is the a. urethra b. prostate c. vas deferens d. epididymis e. testis Answer: b Difficulty: easy Page 49 Skill: recall 30 Short Answer/ Essay Questions 1. Describe what is meant by homeostasis and explain why this response is important to psychologists. Difficulty: easy Page: 29 Skill: recall 2. Describe the location and function of the four lobes of the brain. Difficulty: easy Page: 33 Skill: recall 3. Compare the central and peripheral divisions of the nervous system. Difficulty: easy Page: 31-35 Skill: recall 4. Describe the divisions and function of the autonomic nervous system. Difficulty: moderate Page: 35 Skill: recall 5. Describe the role of the hypothalamus in homeostasis. Difficulty: challenging Page: 32-35 Skill: applied 6. Describe the pathway of the pulmonary and systemic circulatory systems beginning with blood entering the left atrium. Difficulty: moderate Page: 39-40 Skill: recall 7. The circulatory system monitors and automatically adjusts blood pressure. Describe the elements of the system that influence blood pressure levels. Difficulty: challenging Page: 41 Skill: recall 8. Describe the parts of the respiratory system from the throat to the small air sacs Difficulty: easy Page: 41-43 Skill: recall 31 9. For each of the eight systems discussed in Chapter Two, describe why it would be important for a psychologist to understand the function of that particular system. Difficulty: moderate Page: 29-51 Skill: recall 10. For each of the eight systems discussed in Chapter Two, provide an example of a disease or malfunction which results in illness. Difficulty: moderate Page: 29-51 Skill: recall 11. Describe the four basic functions of the digestive system. Difficulty: moderate Page: 44-47 Skill: recall 12. The renal system plays an important role in homeostasis. Describe the functions of the kidneys and explain the importance of these functions to homeostasis. Difficulty: moderate Page: 47-48 Skill: applied 13. Describe how urine is excreted from the urinary system. Difficulty: moderate Page: 48 Skill: recall 14. Compare the male and female reproductive system. Difficulty: moderate Page: 49-50 Skill: recall 15. Describe the processes of specific immunity. How is it acquired? Difficulty: moderate Page 37 Skill: applied 16. What is the difference between an ischemic stroke and a hemorrhagic stroke? Difficulty: easy Page 34 Skill: recall 32