A less than optimal lateral elbow projection demonstrating the radial head positioned posterior to the coronoid process
a. will be obtained when the distal forearm is elevated.
b. will be obtained when the proximal humerus is depressed.
c. will also demonstrate the capitulum distal to the trochlea.
d. could also result if the central ray were angled proximally with the humerus.
Question 2
Which of the follow statements is true as demonstrated on a lateral elbow projection?
a. When the wrist is in a lateral projection, the radial tuberosity is superimposed by the radius.
b. The radial tuberosity should be demonstrated in profile posteriorly for optimal positioning.
c. When the hand is pronated, the radial tuberosity is seen in profile anteriorly.
d. When the hand is supinated, the radial tuberosity is superimposed by the radius.
Experiment of Lederberg and Tatum demonstrating gene transfer in E. coli
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Conformational changes in the myosin head that are coupled to stages in the ATP
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MRI of the head.
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