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Flashcards in Section 2 Deck (21):
1

Layers of Deep cervical fascia

1) Investing layer-aka external cervical fascia

*Covers platysma, sternocleidomastoid, and trapezius

2) Pretracheal layer-aka middle cervical fascia

--Muscular layer

*Covers anterior neck muscles except sternocleidomastoid

-Visceral layer

*Covers Thyroid gland, esophagus, and trachea

**posterior part: Buccopharyngeal fascia

3)Prevertebral layer

*Covers vertebrae and hypaxial muscles

2

What is the retropharyngeal space?

Space between buccopharyngeal F. and Alar F

Extends from skull until T4

3

What is the danger space?

Space between alar F. and Prevertebral fascia

Extends from skull to T12

4

Infrahyoid muscles and their innervations

1) Sternothyroid--ansus cerv.

2)Sternohyoid-ansus cer.

3) Thyrohyoid- C1 via CN XII

4)Omohyoid- ansus cerv.

5

Sternocleidomastoid innervation

CN XI-Accessory N

6

Constrictor muscles innervation

CNX- Vagus N

7

Longus muscles innervation

C1-C3/4

8

Scalene muscles innervation

C3/4-C6

9

Stylohyoid m innervation

CNVII- facial N

10

hypoglossal m innervation

CN XII- hypoglossal N

11

Mylohyoid  innervation

N. to mylohyoid

*branch of Inf. alveolar N from V3

12

Digastric m innervation

Post belly: CN VII- Facial N

Ant belly: Nerve to mylohyoid

*from inf. alvelor N branch of V3

13

Omohyoid innervation

Ansa cervicalis

14

Ansa cervicalis conected to which cervical nn

15

Tensor palati innervation

V3

16

Levator palati innervation

CN X- Vagus N

17

Buccinator innervation

CN VII- facial n

18

Stylopharyngeus m innervation

CN IX- glossopharyngeal n

19

What separates buccinator and sup. constrictor m?

Pterygomandibular raphé

20

Describe recurrent laryngeal N.

Branch of CN X

 wraps around Aortic arch on left side or subclavian A on right side

Meets back up with superior laryngeal N

21

Cricothyroid innervation

Ext laryngeal N.