Which statement about carcinogenesis is accurate? a. An ...

[tatyanajohnson]

Which statement about carcinogenesis is accurate?
 
  a. An initiated cell will always become clinical cancer.
  b. Cancer becomes a health problem once it is 1 cm in size.
  c. Normal hormones and proteins do not promote cancer growth.
  d. Tumor cells need to develop their own blood supply.

Question 2

The nursing instructor explains the difference between normal cells and benign tumor cells. What information does the instructor provide about these cells?
 
  a. Benign tumors grow through invasion of other tissue.
  b. Benign tumors have lost their cellular regulation from contact inhibition.
  c. Growing in the wrong place or time is typical of benign tumors.
  d. The loss of characteristics of the parent cells is called anaplasia.

[jliusyl]

Answer to Question 1

ANS: D
Tumors need to develop their own blood supply through a process called angiogenesis. An initiated cell needs a promoter to continue its malignant path. Normal hormones and proteins in the body can act as promoters. A 1-cm tumor is a detectable size, but other events have to occur for it to become a health problem.

Answer to Question 2

ANS: C
Benign tumors are basically normal cells growing in the wrong place or at the wrong time. Benign cells grow through hyperplasia, not invasion. Benign tumor cells retain contact inhibition. Anaplasia is a characteristic of cancer cells.

[tatyanajohnson]

TYSM

[laurnthompson]

Excellent