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Teratology Lecture 5: Placentation and Placenta Formation

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Teratology Lecture 5: Placentation and Placenta Formation

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Questions and Answers

What is observed in the placentae of the RA treated group on GD 13.5?

Increased size with more fetal vasculature

No change in size or fetal vasculature

Small size with reduced fetal vasculature (correct)

Complete absence of fetal vasculature

What is a characteristic of the fetuses in the RA treated group on GD 18.5?

Malformations such as curved bodies and limb defects (correct)

Extra limbs

No eyes

Normal morphology

What is affected in the ossification process of the axial and appendicular skeleton in the RA treated group?

Only the axial skeleton

Neither the axial nor the appendicular skeleton

Both the axial and appendicular skeleton (correct)

Only the appendicular skeleton

What is an effect of RA on the allantois?

It fails to fuse with the chorion Signup and view all the answers

What is observed in the vertebral column of the RA treated group?

Scoliosis Signup and view all the answers

What is a characteristic of the fetal skeleton in the RA treated group?

Incomplete ossification Signup and view all the answers

What is affected in the development of the skull in the RA treated group?

Multiple bones including the frontal, parietal, and occipital bones Signup and view all the answers

What is a characteristic of the scapula and humerus in the RA treated group?

Hypoplasia Signup and view all the answers

What is observed in the caudal vertebrae of the RA treated group?

Agenesis Signup and view all the answers

What is a characteristic of the fetuses in the control group on GD 18.5?

Normal morphology Signup and view all the answers