Fred q- - 3usmlesteps

[ArchivalUser]

Can anyone please explain this one?

Genes of laterality such as iv or inv determine the right -left axis[sideness] a mutation in a laterality gene is the most logical explanation for a child who was born with which of the following abnomalities?

A.... BIFID HEART
B.....DEXTROCARDIA
C.......DOUBLE OUTLET RIGHT VENTRICLE
D....... PERSISTENT TRONCUS ARTERIOSUS
E........TRANSPOSITION OF THE GREAT VESSEL

[ArchivalUser]

Based on the terminology alone, "laterality", implies "sidedness". For this reason I would say dextrocardia, a condition in which the heart's apex points towards the right rather than left side of the chest.

[ArchivalUser]

Do recall most commonly you seen in which synd?

[ArchivalUser]

Kartageners
Thank you for the questions.

[ArchivalUser]

I agree in kartagners we see dextrocardia, but I couldn't tell they were talking about dextrocardia. I was thinking of RAD which is seen in TOF.

[ArchivalUser]

It fair game on exam to ask you about embro on cardiac loop and primary heart tube 4 wks g L/R
asymmetry.

Here more info if you interested to know gene read under "sidedness of cardiac"

http://books.google.com/books?id=-nIpAgA...es&f=false

[ArchivalUser]

Thank you ..