Muscles of the Thorax Flashcards
1
Q
External intercostals origin
A
superior from highest rib to next lowest
2
Q
External intercostals insertion
A
next lowest rib (each muscle only extends between 2 ribs)
3
Q
External intercostals nerve
A
intercostal
4
Q
External intercostals action
A
elevate ribs during inspiration
5
Q
Internal intercostals origin
A
superior from highest rib to next lowest
6
Q
Internal intercostals insertion
A
next lowest rib (each muscle only extends between 2 ribs
7
Q
Internal intercostals function
A
depresses ribs during expiration
8
Q
Transverse thoracics origin
A
Xiphoid process and inferior sternum
9
Q
Transverse thoracics insertion
A
costal cartilage 2-6
10
Q
Transverse thoracics nerve
A
intercostal
11
Q
Transverse thoracics action
A
expiration (narrows the chest)
12
Q
Innermost intercostals
A
part of internal intercostals
