As part of a first aid class, a health care instructor is ...

[Hungry!]

As part of a first aid class, a health care instructor is teaching a group of industrial workers about how electrical injuries can cause cell damage. Which of the statements made by one of the workers indicates that further teaching is necessary?

A) The greater the skin resistance, the greater the amount of deep and systemic damage a victim is likely to incur.
 B) The particular pathway that a current takes through the body is very significant.
 C) Resistance to flow is the phenomenon that transforms electrical energy into heat.
 D) The most severe damage is likely to occur where the current enters and leaves the body.

Question 2

While taking their daily walk, the nurse is asked by a neighbor what centric fusion (robertsonian) translocation means. She tells you that a family member has been diagnosed with this and is now afraid to have children.
 
  Given this diagnosis, what may be potential risks for her offspring?
  A)
  If chromosome 21 is involved, there is a high risk for producing a child with Down syndrome.
  B)
  Since the extremely short fragment only contains a small amount of genetic material, there should be no additional risk than the normal population.
  C)
  This translocation of genetic material places the child at high risk for having multiple limb abnormalities.
  D)
  Cleft lip with cleft palate is frequently associated with this translocation of genetic material.

[shewald78]

Answer to Question 1

Ans: A

Feedback: High skin resistance is associated with greater local and superficial burns, rather than deep and systemic damage. The pathway is indeed an important factor in the degree of injury, and this is a result of the transformation of current into heat. Damage is most severe at the point of entry and exit.

Answer to Question 2

Ans:
A

Feedback:

In centric fusion or robertsonian translocation, the break occurs near the centromere affecting the short arm in one chromosome (13 and 14 or 14 and 21 most commonly). The short fragment is usually lost during subsequent divisions. In this case, the person has only 45 chromosomes, but the amount of genetic material lost is small. Difficulty arises during meiosis. The chief clinical significance arises when the translocation carriers involve chromosome 21, which may produce a child with Down syndrome.

[Hungry!]

Correct answers!

[shewald78]

Great! Please up vote