Question 897

Question contributed by Kateryna Burlak

Disclosures and question data

Which of the following is FALSE regarding the first rib?

middle scalene muscle attaches to the first rib between the groove for the subclavian artery and the transverse tubercle

the first rib forms the lateral border of the superior thoracic aperture

brachial plexus travels over the first rib, posterior to the anterior scalene muscle

the first rib features a single articular facet for the costovertebral joint

scalene tubercle serves as a point of attachment for the middle scalene muscle