During a prenatal education class, a participant has related a ...

[nmorano1]

During a prenatal education class, a participant has related a story about how her friend's infant died of sudden infant death syndrome (SIDS).
 
  What can the educator tell the group about how they can prevent SIDS when they have their babies? Select all that apply.
  A)
  The best sleeping position for your baby is on his back.
  B)
  Children are at particular risk of SIDS when they have a cold or flu, so these times require extra vigilance.
  C)
  Using drugs during pregnancy has been shown to be associated with SIDS after birth, which is one more reason for mothers to avoid them.
  D)
  It's important if anyone in your home smokes to make sure they only do it outside.
  E)
  The exact cause of SIDS still isn't known, so there's little that you can do to prevent this tragic event.

Question 2

A student asks the instructor about the origins of different tissues and their cellular origins during the process of development.
 
  Which of the instructor's following statements best describes the process of cell differentiation?
  A)
  Cells of the hematopoietic system produce the appropriate body cells that are required at each stage of development.
  B)
  A single stem cell differentiates into approximately 200 different types of cells.
  C)
  A fertilized ovum undergoes a series of divisions, yielding many different cell types.
  D)
  Cells differentiate into necessary body cells peaking after conception and ceasing near the time of birth.

[pocatato]

Answer to Question 1

Ans:
A, C, D

Feedback:

Prone or side-lying position, intrauterine drug exposure, and postnatal exposure to cigarette smoke are all associated with SIDS. Upper respiratory infections are not noted to present a particular risk, and though the exact etiology is not known, preventative measures do exist.

Answer to Question 2

Ans:
C

Feedback:

Cell differentiation and consequent tissue types are the outcome of the series of cell divisions that occur in the fertilized ovum. It originates neither with a single stem cell nor in the hematopoietic system. Stem cells allow for limited differentiation throughout the life span, not only antepartum.

[nmorano1]

TYSM

[frankwu0507]

Excellent