Download Bio 375 Practice Exam 1 with Questions and Answers and more Exams Pathophysiology in PDF only on Docsity!
Bio 375 Practice Exam 1
- (^) One reason for staging a malignant tumor at the time of diagnosis is to:
A. (^) identify the original cell from which the tumor developed B. (^) locate and identify the primary tumor C. (^) decide the initiating factor for a particular tumor D. (^) determine the best treatment and the prognosis
T F 2. (^) Incomplete penetrance occurs when dominant genes seem to skip
generations in a pedigree.
- (^) Which cells are required to process and present antigens from foreign material as the initial step in the immune response?
A. (^) T–helper cells B. (^) macrophages C. (^) eosinophils D. (^) monocytes
- (^) A large burn area predisposes to decreased blood pressure because:
A. (^) bleeding occurs under the burn surface B. (^) the heart is damaged by toxic materials C. (^) fluid and protein shift out of the vascular compartment D. (^) vasoconstriction occurs in the burn area
- (^) Replacement of damaged tissue by similar cells is termed:
A. (^) fibrosis B. (^) regeneration C. (^) resolution D. (^) repair by scar tissue
- (^) What is the correct order of the following events in the inflammatory response immediately after tissue injury?
- increased permeability of blood vessels
- dilation of blood vessels
- transient vasoconstriction
- migration of leukocytes to the area
- hyperemia
A. (^) 5, 3, 2, 1, 4 B. (^) 1, 2, 4, 5, 3 C. (^) 2, 3, 5, 4, 1 D. (^) 3, 2, 5, 1, 4
- (^) Which statement applies to contact dermatitis?
A. (^) it occurs when IgE antibodies on the skin react with the causative substance B. (^) it may result from ingested foods C. (^) the urticaria (hives) gradually spreads over the body D. (^) a type IV reaction occurs in areas of direct contact with the causative substance
- (^) Which of the following would be the most likely cause of an iatrogenic disease?
A. (^) an inherited disorder B. (^) a combination of specific etiologic factors C. (^) an unwanted effect of a prescribed drug D. (^) prolonged exposure to toxic chemicals in the environment
- (^) Which of the following is a characteristic of a benign tumor?
A. (^) unencapsulated, invasive B. (^) it consists of undifferentiated cells C. (^) it exerts systemic effects D. (^) cells appear relatively normal
- (^) A warning sign of possible cancer would be any of the following except:
A. (^) persistent, unusual bleeding B. (^) a change in bowel habits C. (^) sudden development of fever, nausea, and diarrhea D. (^) a change in shape, color, or surface of a skin lesion
- (^) A tissue in which the cells vary in size and shape and show increased mitotic figures would be called:
A. (^) metaplasia B. (^) atrophy C. (^) dysplasia D. (^) hypertrophy
- (^) Hypertrophy of the heart would be related to:
A. (^) an increase in the size of the individual cells B. (^) an increase in the number of cells in an area C. (^) replacement of normal cells by a different type of cell D. (^) a decrease in the size of the individual cells
T F 13. (^) Chromosomal defects usually result from an error during meiosis.
- (^) Down's syndrome is an example of a(n):
A. (^) autosomal dominant disorder B. (^) multifactorial disorder C. (^) developmental defect D. (^) chromosomal disorder
- (^) Grading of newly diagnosed malignant tumors is based on the:
A. (^) size of the tumor B. (^) number of metastases C. (^) degree of differentiation of the cells D. (^) number of lymph nodes involved
- (^) Teratogens have the most serious effects on fetal development during
the:
A. (^) period of fertilization B. (^) first six months of pregnancy C. (^) period of organogenesis D. (^) final three months of pregnancy
- (^) Tears are considered to be part of the:
- first line of defense
- second line of defense
- third line of defense
- specific defenses
- nonspecific defenses
A. (^) 1, 4 B. (^) 1, 5 C. (^) 3, 4 D. (^) 2, 5
- (^) When an allergen binds with IgE antibodies on mast cells, resulting in
release of chemical mediators, this reaction is called:
A. (^) cytotoxic hypersensitivity B. (^) immune complex hypersensitivity C. (^) type I hypersensitivity D. (^) type IV hypersensitivity
