A 23-Year-Old Man Is Brought to the Emergency Department After

question 85

Multiple Choice

A 23-year-old man is brought to the emergency department after sustaining stab injuries in a street fight.  The patient feels lightheaded and dizzy.  His blood pressure is 100/60 mm Hg and pulse is 115/min.  Physical examination shows profuse bleeding from penetrating wounds over the left neck and shoulder area.  Intravenous fluids are administered, and a blood transfusion is initiated.  Urgent surgical exploration is performed, and the injured blood vessel is repaired.  Further exploration shows complete transection of the nerve indicated by the arrow in the image below. Which of the following actions is most likely to be weakened as a result of this patient's nerve injury?

• A)Abduction of the fingers
• B)Adduction of the thumb
• C)Extension of the wrist
• D)Flexion of the wrist
• E)Opposition of the thumb

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Definitions:

False Generalization

An erroneous logical conclusion that applies a specific observation to a broader context than is justifiably warranted.

Double-Blind Procedure

An experimental technique in which neither the participants nor the experimenters know who is receiving a particular treatment, used to prevent bias.

Random Assignment

A method used in experiments where participants are assigned to groups in a way that each has an equal chance of being placed in any group, minimizing biases.

Nonverbal Behaviors

Communication actions, excluding spoken words, that convey messages and emotions, such as facial expressions, body language, and gestures.