NECK MUSCLES/BIOMECHANICS OF SWALLOWING

Question 1

Mylohyoid

Answer 1

Tenses floor of mouth during swallowing

Question 2

Digastric (2 bellies)

Answer 2

Assists in depression of mandible to open mouth wide

Question 3

What are the four steps of swallowing?

Answer 3

1. Contraction of mylohyoid and tongue muscles
2. Contraction of tensor and levator veli palatini muscles
3. Elevation of larynx by many muscles
4. Sequential contraction from the top of constrictor muscles

Question 4

Longus colli

Answer 4

Flexors of neck (also head for Longus capitis)

Question 5

Scalene mm

Answer 5

Lateral flexors of neck; elevators of ribs 1 and 2

Question 6

Infrahyoid mm

Answer 6

Pull down hyoid bone

Question 7

Sternocleidomastoid

Answer 7

Major neck muscle; turns head to opposite side of contraction