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Anatomy of Neck Triangles

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Questions and Answers

What muscle forms the lateral boundary of the supraclavicular triangle?

Brachialis
Omohyoid
Scalene
Sternocleidomastoid (correct)

What is the inferior boundary of the supraclavicular triangle?

Clavicle
Scalene tubercle
First rib (correct)
Scalene muscle

Which structure passes through the anterior fissure of the scalene muscles?

Subclavian vein (correct)
Cephalic vein
Brachial plexus
Subclavian artery

What is the middle boundary of the anterior fissure of the scalene muscles?

Anterior scalene muscle (B) Signup and view all the answers

Which nerve plexus is situated in the posterior fissure of the scalene muscles?

Brachial plexus (D) Signup and view all the answers

What is the floor of the supraclavicular triangle formed by?

Scalene muscles (B) Signup and view all the answers

What is the posterior boundary of the posterior fissure of the scalene muscles?

Posterior scalene muscle (A) Signup and view all the answers

What is situated in the groove on the first rib, anterior to the scalene tubercle?

Subclavian vein (C) Signup and view all the answers

What is the function of the minor scalene muscle?

To separate the subclavian artery and the brachial plexus (A) Signup and view all the answers

What is the lateral boundary of the anterior fissure of the scalene muscles?

Sternocleidomastoid muscle (D) Signup and view all the answers

What is the boundary of the posterior fissure of the scalene muscles?

Anteriorly - anterior scalene muscle (A) Signup and view all the answers