WorksheetsAccessory Muscle Actions
Total questions: 6
Worksheet time: 2mins
Name
Class
Date
1.
Elevates the sternum, increases AP diameter of the chest
a)
Scalenes
b)
SCM
c)
Upper trap
d)
Latissimus dori
2.
Extends the thoracic spine and raises the rib cage
a)
Serratus anterior
b)
Pectoralis minor
c)
Pectoralis major
d)
Erector spinae
3.
Posterior fibers assist in inspiration by pulling the trunk into extension
a)
SCM
b)
Serratus anterior
c)
Pectoralis minor
d)
Latissimus dorsi
4.
Elevates and fixes the first and second ribs
a)
SCM
b)
Scalene
c)
Upper trap
d)
Erector spinae
5.
Helps to elevate the thoracic cage
a)
Latissimus dorsi
b)
SCM
c)
Erector spinae
d)
Upper trap
6.
Uses its insertion as its origin to lift the ribs and sternum when the arms and shoulders are fixed.
a)
Pectoralis major
b)
Erector spinae
c)
Serratus anterior
d)
SCM
100 %
