When a COPD patient leans forward braced in a tripod position, this lends particular advantage to which accessory muscles of inspiration?
A) External intercostals
B) Pectoralis
C) Scalenes
D) Sternocleidomastoids

Question

Quizplus · Accepted Answer

The major and minor pectoralis muscles are broad fan-shaped muscles of the upper anterior chest The pectoralis major originates on the humerus and inserts onto the clavicle and sternum. The pectoralis minor originates on the scapula and inserts on the anterior portions of ribs 3 through 5. When these muscles receive impulses from the pectoral nerves, they normally function to adduct the arms in a hugging motion. They are also capable of generating some anterior thoracic lift when the arms are braced on a surface in front of a subject. Those individuals who suffer with chronic shortness of breath often utilize these muscles by sitting in a "tripod" position. This is performed by sitting upright and leaning forward with both arms braced on a table.

When a COPD Patient Leans Forward Braced in a Tripod