Author Question: Routine protocol of a non-trauma humerus entails: single AP projection with the arm in external ... (Read 20 times)

penguins · **on:** Jul 17, 2018

Routine protocol of a non-trauma humerus entails:

single AP projection with the arm in external rotation
single AP projection in neutral position, a transthoracic lateral, and a distal lateromedial projection
two projections: one with the arm in external rotation and one with the arm in internal rotation
single AP projection and a single transthoracic projection

Question 2

The shape of the DNA molecule is described as:

ladder
circular
cylinder
double helix

tjayeee · **Reply #1 on:** Jul 17, 2018

Answer to Question 1

two projections: one with the arm in external rotation and one with the arm in internal rotation

Rationale: Non-trauma humerus will take two projections to include the entire long bone and both joints. The arm will be changed in position for each projection; one in external rotation and one in internal rotation.

Answer to Question 2

double helix

Rationale: Two strands of DNA coil around each other to form a double helix.