Which of the following are characteristics of cancer cells? (Select all that apply)
a. They are considered immortal.
b. The take on the characteristics of the cells in the tissue to which they migrate.
c. They destroy the gluelike substance found between normal cells.
d. They result from mutations of cellular genes.
e. They usually grow slowly.
f. They have division limits.
ANS: A, C, D
Cancer cells do not have a division limit and are considered immortal. The progression from a normal cell to a malignant cell follows a pattern of mutation, defective division and abnormal growth cycles, and defective cell communication. Cell mutation occurs when a sudden change affects the chromosomes, causing the new cell to differ from the parent. The malignant cell enzymes destroy the gluelike substance found between normal cells, which disrupts the transfer of information used for normal cell structure. They do not take on characteristics of normal tissues, and they are usually fast growing, not slow growing.
You might also like to view...
According to the U. S. Department of Commerce, which of the following rules must be followed by makers of toy guns?
a. Darts from toy guns must be made of materials that will not penetrate skin. b. Toy guns cannot contain parts made of lead or lead-based paint. c. Reflective paint must be used on toy guns. d. Toy guns must be distinguishable from real guns.
A 57-year-old CEO of a large corporation has complaints of rectal bleeding and occasional lower abdominal pain. The patient may have which of the following?
A) Ulcer B) Crohn's disease C) Rectal polyps D) Inflammatory bowel disease
Which is an example of a family assessment?
A) Blood pressure screening B) Home assessment for safety C) Stress assessment for the family with a new baby D) Assessment for normal grieving for the recently widowed
The nursing instructor is teaching pharmacology to student nurses. What will the nursing instructor include as the four major components of pharmacokinetics? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Standard Text: Select all that apply
1. How drugs move from the site of administration to circulating fluids 2. How drugs are converted to a form that is easily removed from the body 3. How drugs change body illnesses and pathogens 4. How drugs are transported throughout the body 5. How drugs are removed from the body