Texas has what type of primary?

In Texas, what prevents a person who loses a primary from running as an Independent or minor party candidate in the general election?

A 3 year old child with low tone secondary to Cerebral palsy is having difficulty sitting upright for feeding and playing. Which would be the least prohibitive and, therefore, best choice to improve posture? 

Bonus question (1pt possible): Name one of the stream characteristics that we will also measure (with the probe or other means) when we collect water samples and explain what it is. 

EC stands for:

The amnion is visualized on a 20 week ultrasound attached to the fetal arm.  What is the most likely diagnosis?

What does the abbreviation ‘XR’ signify?

An ultrasound reveals a large BPD and HC measurement for gestational age.  The lateral ventricle measurement is 20mm.  What is the most likely diagnosis?

A sonographic exam reveals legs on a fetus that appear fused.  The sonographer never sees the legs separate and she/he cannot find any feet.  Which is the most likely diagnosis?

The transducer of choice for extremity venous studies is: