When a COPD patient leans forward braced in a tripod position, ...

[fasfsadfdsfa]

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. Sternocleidomastoid s

Question 2

Which of the following nerves innervates the diaphragm?
 
  a. Glossopharyngeal
  b. Phrenic
  c. Seventh cranial
  d. Vagus

[lin77x]

Answer to Question 1

ANS: B
The major and minor pectoralis muscles are broad fan-shaped muscles of the upper anterior chest (Figure 9-25). 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 func-tion 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 posi-tion. This is performed by sitting upright and leaning forward with both arms braced on a table.

Answer to Question 2

ANS: B
Functionally, the diaphragm is divided into a right and left hemidiaphragm. Each hemidiaphragm is innervated by a phrenic nerve that arises from branches of spinal nerves C3, C4, and C5.

[fasfsadfdsfa]

Correct answers!

[lin77x]

Great! Please up vote