Quiz 2

Question 1

Strap muscles

Answer 1

Digastric

  - Anterior belly (CN VII)
  - Posterior belly (CN V)

Stylohyoid (CN VII)

Sternohyoid (ansa cervicalis)

Sternothyroid (ansa cervicalis)

Thyrohyoid (cervical spinal nerve 1)

Omohyoid

  - Inferior belly (ansa cervicalis)
  - Superior belly (C1 of ansa cervicalis)

Question 2

Laryngeal muscles

Answer 2

***Innervated by branches of CNX

Cricothyroid m. - exerternal laryngeal n.

*all others = recurrent laryngeal
Posterior cricothyroid m.
Lateral cricoarytenoid
Transverse and oblique arytenoids
Vocalis m.
Thyroarytenoid m.

Question 3

Cricothyroid m.

Answer 3

External largyngeal

Pulls thyroid ANTERIORLY, increases tension on vocal ligaments and increases pitch

Question 4

Poster cricoarytenoid mm.

Answer 4

innerv. by Internal laryngeal branch

ABducts vocal ligaments

**ALLOWS air to come in - need this to breath

Question 5

Lateral cricoarytenoid mm.

Answer 5

innerv. by interal laryngeal branch