Page 47 - ractice Exam Questions and rationales

B. Incision into a localized area of infection (abscess), to drain the exudate from the area.

C. Debridement of tissue and skin lesions by using extremely cold temperatures.

D. Excision of a small, painless sac containing a build-up of sebum.

Your response:
Excision of lacerated, dead, or contaminated tissue and removal of foreign matter from a wound.
Correct response:
Incision into a localized area of infection (abscess), to drain the exudate from the area.
Rationale: An I&D is the abbreviation for incision and drainage, and is when an incision is made
into a localized are of infection, and then exudate is drained from the area. A debridement is the
excision of lacerated, dead, or contaminated tissue and removal of foreign matter from a wound.
An I&D doesn’t include debriding the tissue and skin lesions with extreme cold, and also
doesn’t include cutting small, painless sacs containing a build-up of sebum.
The main function of a centrifuge is to

A. freeze cells for transport.

B. determine the concentration of glucose.

C. magnify blood components.

D. separate cells from plasma.

Your response:
separate cells from plasma.
Correct response:
separate cells from plasma.
Rationale: A centrifuge is an essential laboratory instrument that rotates at varying speeds to
separate blood components (i.e. separates cells from plasma or serum). Care should be taken to
correctly load, balance, and remove tubes. The centrifuge does not freeze or magnify samples,
nor does it make glucose concentration determinations. It is merely a laboratory instrument that
helps process samples for testing.