Alberta Free Tutoring And Homework Help For Biology 30


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What happens to the embryo after week 8?
Select one:
All organ formation has completed, so the fetus begins to grow in size through mitosis.
Tissue and organ differentiation from the endoderm and mesoderm finalize at the end of the second trimester.
. Umbilical cord and placenta begins to form.
All other organs such as kidneys, bladder, liver, lungs, and spleen begin to form.
Between 1959 and 1961, thalidomide was prescribed to expectant mothers in Canada for morning sickness. Once it was determined that thalidomide was linked to miscarriages and birth defects, it was pulled from Canadian pharmacies in 1962. It is estimated that over 20 000 individuals worldwide were affected by thalidomide. There are approximately 100 thalidomide survivors in Canada who have been approved to receive compensation from the federal government. Which of the following over the counter and prescription medications have not been linked with birth defects or problems with pregnancy? (Some research may be required.)
Select one:
 Isotretinoin for acne
Valproic acid for epilepsy
. Amoxicillin as an antibiotic
Advil (ibuprofen)

11 months ago

Answered By Andrew R

Q1) Other critical organs (kidneys, bladder, liver, lungs, spleen) begin to form. By 8th week, all body organs are formed but require more development. The placenta begins forming at the end of week 2 (but umbilical cord forms at week 8). Q2) Amoxillin has not been linked to birth defects or problems with pregnancy.-Isotretinoin can cause severe effects to proper nervous system, craniofacial, and cardiovascular formation-Valproic acid can effect the closure of the neural tube (spina bifida)-Ibuprofen and other non-steriodal anti-inflammatory drugs (NSAIDs) are linked to an increase risk of miscarriage