A 62-year-old woman with breast cancer undergoes a left mastectomy and lymph node dissection. During the operation, there was difficulty dissecting lymph nodes in the vicinity of the thoracoacromial artery. Following the procedure, she cannot place her left hand on her right shoulder. This patient most likely sustained paralysis of which of the following muscle groups during the surgical procedure? A) Pectoralis major B) Rhomboideus major C) Serratus anterior D) Subclavius E) Supraspinatus

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A 62-year-old woman with breast cancer undergoes a left mastectomy and lymph node dissection. During the operation, there was difficulty dissecting lymph nodes in the vicinity of the thoracoacromial artery. Following the procedure, she cannot place her left hand on her right shoulder. This patient most likely sustained paralysis of which of the following muscle groups during the surgical procedure?

  1. A) Pectoralis major
  2. B) Rhomboideus major
  3. C) Serratus anterior
  4. D) Subclavius
  5. E) Supraspinatus
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