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Prevertebral Muscles & Root of the Neck
N/A
11
Medical
Professional
09/11/2010

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Term
Prevertebral Fascia
Definition
1)Blends with the _____________________ of the upper thoracic vertebrae, extending into the __________________
2)Covers the prevertebral and lateral vertebral muscles (also called _______)
3)Attaches to the base of the skull
4)Forms the posterior boundary of
_____________________*KEY POINT!!!!*

Answers
1)anterior longitudinal ligament; posterior mediastinum
2)scalene muscles
4)retropharyngeal space
Term
Prevertebral Fascia (clinical)
Definition
1)Exudate that arises anterior to prevertebral fascia, e.g. retropharyngeal abscess, can be felt as a mass posterior to the pharynx (trouble swallowing). It can be guided by the fascial continuation to the posterior neck, axilla and posterior mediastinum.
*KEY POINT, there is a DIRECT connection between retropharyngeal space and posterior mediastinum.*

2)Exudates posterior to the prevertebral fascia, as a result of TB, osteomyelitis, cancer or epidural metastasis may spread to the posterior neck, axilla and posterior mediastinum, guided by the fascial continuation.
Term
Lateral Vertebral Muscles
Definition
*More important than prevertebral muscles because of association with major structures.*
1)Covered by the prevertebral fascia
2)Form the floor of the posterior triangle
3)Extend between the cervical vertebrae and the upper two costae (scalene muscles)
4)Consist of the:
1. Anterior Scalene Muscle
2. Middle Scalene Muscle
3. Posterior Scalene Muscle
4. Splenius capitis & levator scapulae
Term
Anterior Scalene Muscle
Definition
*Most important muscle because of association with key structures and where gaps protrude from*
Origin: Transverse processes of C1-C4 vertebrae (not important)
Insertion: First rib- scalene tubercle *wants us to know!*
Function: Elevation of the first rib in inspiration, flexion and lateral rotation of the neck
Term
Middle Scalene Muscle
Definition
1)Origin: Posterior tubercles of the transverse processes of CII-CVII vertebrae (not important)
2)Insertion: First rib, posterior to the sulcus for the subclavian artery *wants us to know, first rib along with anterior scalene muscle, just a little bit more lateral.*
3)Function: Elevation of the first rib in inspiration, flexion and rotation of the neck laterally
Term
Posterior Scalene Muscle
Definition
Origin: Posterior tubercles of the transverse processes of C4-C6 vertebrae (not important)
Insertion: Second rib (key point, only scalene muscle to attach to 2nd rib)
Function: Elevation of the second rib in inspiration, flexion of the neck
Term
Longus Capitis
Definition
*Deep to scalene muscles, intermediate layer?*
Origin: Anterior tubercles of the transverse processes of C3-C6
Insertion: Basilar part of the occipital bone
Function: Flexion of the head (atlanto-occipital joint)
Term
Longus Colli
Definition
*Much longer than longus capitis, extends all the way down to T3*
*The major points are, it's MEDIAL to the longus capitis and it goes from C3 to T3 and attaches to bodies and transverse processes*
1)Origin: Anterior tubercles of the transverse processes of CIII-CV (superior oblique), bodies of T1-T3 (inferior oblique), bodies of CV-CVII and T1-T3 (vertical part)
2)Insertion: Transverse processes of C3-C5 & bodies of C5-T3
3)Function: Flexion of the neck; rotation to the contralateral side (unilateral action)
Term
Rectus Capitis Anterior
Definition
*NOT IMPORTANT*
1)Origin: Anterior surface of the lateral mass of the atlas
2)Insertion: Basilar occipital bone, anterior to the occipital condyles
3)Function: Flexion of the head
Term
Rectus Capitis Lateralis
Definition
*Lol, Arslan does not even recommend looking at it for the lab*
1)Origin: Transverse process of the atlas
2)Insertion: Jugular process of the occipital bone
3)Function: Flexion of the head
Term
Root of Neck
Definition
*Key point, you can have muscular and neural disorder because of entrapment of muscles and nerves all in one area. Compression of the root of the neck is called __________________*
Junction of *Transition between* the neck and thorax, immediately superior to the superior thoracic aperture (thoracic inlet/outlet) and axillary inlet
a)Anterior boundary manubrium sterni & superior border of the clavicle
b)Posterior boundary: T1 vertebra, and upper border of scapula to the coracoid process
c)Site of *Answer: thoracic outlet syndrome*
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