Laboratory 24.
Posterolateral Triangle of the Neck
Step 9.
The Prevertebral Muscles
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To identify the prevertebral muscles which form the floor of the posterolateral triangle, remove their investing fascia. These muscles include the:
scalenus anterior muscle
scalenus medius and posterior muscles
levator scapulae muscle
splenius capitis muscle
semispinalis capitis muscle
Links and References:
Grant's: 8.4
Netter:22
Rohen/Yokochi: 178