NGR 5140 CH4 QUESTIONS WITH
VERIFIED ANSWERS
Epithelialization, the first component of the proliferative phase of
wound healing, is delayed in open wounds until after _______________ has formed.
a. granulation tissue
b. fibrinous meshwork
c. capillary circulation
d. collagenous layers - ANSWERSA
A mutation has occurred during mitosis of an individual's bone marrow cell. This event
may be the result of the failure of which of the following?
a. progenitor cells
b. fibroblasts
c. stem cells
d. cyclins - ANSWERSD
A patient has experienced a myocardial infarction with accompanying necrosis of
cardiac muscle, a permanent tissue, What are the ramifications of the fact that cardiac
muscle is a permanent tissue?
a. cardiac muscle cells will remain perpetually in the GI stage of mitosis
b. regeneration of the patients cardiac muscle will be exceptionally low
c. the necrotic cells will be replaced with muscle cells that have limited metabolism
d. the cells will not proliferate - ANSWERSD
A couple have chosen to pay for the harvesting and storage of umbilical cord blood after
the delivery of their child to secure a future source of embryonic stem cells. What is the
most likely rationale for the couples decision?
a. the stem cells may be able to produce a wide range of body cells
b. the embryonic stem cells allow stable and permanent tissues to enter mitosis
c. the stem cells can change the proliferative capacity of other cells
d. the embryonic stem cells remove cyclin-dependent kinase inhibitors from the body -
ANSWERSA
The basement membrane surrounding a patients foot wound remains intact, a fact that
bodes well for the wound-healing process. Which of the following components
constitutes this form of the extracellular matrix? Select all that apply
a. prostaglandins
b. fibrous structural proteins
