Section 2 Flashcards
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
What is the retropharyngeal space?
Space between buccopharyngeal F. and Alar F
Extends from skull until T4
What is the danger space?
Space between alar F. and Prevertebral fascia
Extends from skull to T12
Infrahyoid muscles and their innervations
1) Sternothyroid–ansus cerv.
2) Sternohyoid-ansus cer.
3) Thyrohyoid- C1 via CN XII
4) Omohyoid- ansus cerv.
Sternocleidomastoid innervation
CN XI-Accessory N
Constrictor muscles innervation
CNX- Vagus N
Longus muscles innervation
C1-C3/4
Scalene muscles innervation
C3/4-C6
Stylohyoid m innervation
CNVII- facial N
hypoglossal m innervation
CN XII- hypoglossal N
Mylohyoid innervation
N. to mylohyoid
*branch of Inf. alveolar N from V3
Digastric m innervation
Post belly: CN VII- Facial N
Ant belly: Nerve to mylohyoid
*from inf. alvelor N branch of V3
Omohyoid innervation
Ansa cervicalis
Ansa cervicalis conected to which cervical nn
Tensor palati innervation
V3
