20 Questions
Which part of the neck does the scalene muscles form part of?
Lateral neck
What is the function of the anterior scalene muscle?
Elevation of the first rib
Which muscles act as accessory muscles of respiration?
Scalene and sternocleidomastoid muscles
What is the insertion point of the middle scalene muscle?
Inner border of first rib
Which muscle is sometimes present behind the lower portion of the anterior scalene?
Scalenus minimus (Sibson's muscle)
What is the innervation for the anterior scalene muscle?
Anterior rami of C5-C6
Which muscle performs anterior flexion of the neck upon bilateral contraction?
Anterior scalene muscle
Where does the anterior scalene muscle originate from?
Transverse processes of C3-C6
What is a notable function of Sibson's muscle (Scalenus minimus)?
Depression of the first rib
Which muscle originates from the posterior tubercles of the transverse processes of C2-C7?
Posterior Scalene
To which rib does the posterior scalene muscle attach?
Second rib
Which muscle is responsible for the lateral flexion of the neck when contracted ipsilaterally?
Posterior Scalene
Which arteries supply blood to the scalene muscles?
Ascending cervical artery
Which important anatomical structures pass between the anterior and middle scalene muscles?
Brachial plexus and subclavian vein
What syndrome involves compression of the brachial plexus and subclavian vessels between the anterior and middle scalene muscles?
Adson's syndrome
Which syndrome involves respiratory distress due to compression of the subclavian artery and vein between the anterior and middle scalene muscles?
Scalenius anticus syndrome
"Cooper's syndrome" is associated with which clinical condition?
TOS ADSON’S Test
Which syndrome is associated with compression of the subclavian artery and vein between the anterior and middle scalene muscles?
Naffziger's syndrome
Which muscle performs elevation of the second rib and ipsilateral lateral flexion of the neck?
Posterior scalene
Which clinical condition involves respiratory distress due to compression of the subclavian artery and vein between the anterior and middle scalene muscles?
Thoracic outlet syndrome (TOS)
Test your knowledge about the anatomy and function of the scalene muscles, which are located in the lateral aspect of the neck and act as accessory muscles of respiration. Learn about the attachments and actions of the anterior, middle, and posterior scalene muscles.
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