E2 respiratory system MUSCLES Flashcards
1
Q
Sternocleidomastoid
A
elevates sternum clavicle and ribs
2
Q
Scalenus anterior
A
elevates frist rib
3
Q
Scalenus medius
A
elevates first rib
4
Q
Scalenus posterior
A
elevates second rib
5
Q
Pectoralis major
A
elevates sternum and ribs
6
Q
pectoralis minor
A
elevates second - fifth ribs
7
Q
subclavius
A
elevates first rib
8
Q
serratus anterior
A
elevates the upper rib
9
Q
*External intercostals
A
elevates the ribs and stiffens their interspaces
10
Q
internal intercostals
A
primarily depress ribs
11
Q
Transversus thoracis
A
depress second - sixth ribs
12
Q
latissimus dorsi
A
whole muscle depresses rib cage wall
fibers that insert can elevate **
13
Q
Serratus posterior inferior
A
depresses lower four ribs
14
Q
lateral iliocostalis cervicis
A
elevates third through sixth ribs
15
Q
lateral iliocostalis
A
depresses lower six ribs
