Answer to Question 1
A
Feedback:
A culture is collected to identify the causative organism of an infection. It can help with determining the site of infection in some cases if the infection is limited only to the site where the culture is collected. It does not individualize patient factors contributing to infection. These must be determined through assessment. It cannot indicate how long the patient has had the infection, which is often determined by the white blood cell count and differential.
Answer to Question 2
C
Feedback:
Actin and myosin molecules react with each other again and again, sliding along the filament and making it shorter. This is a contraction of the muscle fiber according to the sliding filament theory. As the calcium is removed from the cell during repolarization of the muscle membrane, the troponin is freed and once again prevents the actin and myosin from reacting with each other. The muscle filament then relaxes or slides back to the resting position. Muscle tone results from a dynamic balance between excitatory and inhibitory impulses to the muscle.
Sandia ear-plug-sized samplers hang poised to sample gases relevant to climate and weather.
Visual Acuity Testing, Snellen Vision Chart
Application of an ostomy bag or pouch: B, An ostomy nurse applying an ostomy bag to a stoma;
granulation tissue
Sample root cause analysis: Duplicate dose of a narcotic analgesic.
Testing the strength of the tongue