NU 545 Unit 7 Study Guide with
Complete Solutions
Describe the specific chromosomal abnormality responsible for Down Syndrome - Answer-
The most well known aneuploidy (those that do not contain a multiple of 23 chromosomes) in
an autosome is trisomy of the 21st chromosome. J. Langdon Down 1st d...
the known and visible cancer has been removed surgically or with radiation. Adjuvant
chemotherapy aims to destroy hidden cancer cells that remain but are undetectable.
Adjuvant means additional. Adjuvant chemotherapy is given to patients after primary
treatment, when the doctor thinks there is a high risk the cancer will return. After a primary
treatment of surgery or radiation, adjuvant chemotherapy reduces the risk of recurrence. The
elimination of undetectable microscopic cancer cells that may have traveled to other parts of
the body is the goal of adjuvant chemotherapy.
When adjuvant chemotherapy doesn't result in a full cure it does make the intervals between a
cancer relapse longer. Adjuvant chemotherapy typically begins within three to five weeks of the
surgical removal of the cancer and has different treatment lengths depending on the cancer. For
breast cancer, the adjuvant chemotherapy is administered for three to nine months. In the case
of colon cancer, treatment rarely last more than six months.
Most common time childhood cancers are diagnosed? - Answer✔✔-Childhood and adolescent
cancers are often associated with specific peak times of physical growth and may occur as a
consequence altered cellular regulatory mechanisms at a given time in the child or adolescents
development. Embryonal tumors most often develop before the age of 5 years, acute
lymphoblastic leukemia occurs most often in younger children, and bone tumors occur most
often in adolescents.
DES exposure prenatally - Answer✔✔-Diethylstibestrol (DES) which was prescribed by
physicians to treat spontaneous miscarriage. Identified as a transplacental chemical carcinogen
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