The answers are
11. B
12. D
13. C
Answer:
The anterior and middle scalene muscles lift the first rib and bend the neck to the same side; the posterior scalene lifts the second rib and tilts the neck to the same side. The muscles are named from Ancient Greek σκαληνός (skalenos) 'uneven'.
Answer:
D
Explanation:
The strain of a bad posture can bring all of those symptoms.