Transcript Necks - University of New England

Anterior
Triangle
Mandibl
e
Posterior
Triangle
Median
Plane
Sternocleidomastoid

Contents:



Median plane
Omohyoid
(superior belly)
Sternocleidomastoid

Infrahyoid mm
Cricothryoid m
Thyroid gland
Parathyroid gland
Thyrohyoid
Membrane

Thyroid Cartilage


Thyrohyoid membrane
Cricoid Cartilage

Cricothyroid ligament
Cricothyroid
ligament
Cricoid Cartilage
Laryngeal
Prominence
Superior
Horn
Oblique line
Inferior
Horn
Thyroid Cartilage

Omohyoid



Superior Belly
Inferior Belly
Sternohyoid
Sternohyoid
Fascial sling of
omohyoid
Omohyoid


Sternothyroid
Thyrohyoid
Thyrohyoid
Sternothyroid
Sternohyoid
Omohyoid
External Laryngeal N.
Cricothyroid

Variation


Pyramidal lobe
Vasculature



Superior
Thyroid A
Superior Thyroid A
Inferior Thyroid A
Thyroid Ima (occassionally)
Inferior Thyroid A

Considerations


Thyroid Ima A
Recurrent Laryngeal NN
Parathyroid
Glands
Recurrent Laryngeal N
Thyroid
Ima A
Recurrent
Recurrent
The Center for Advanced Head and Neck Surgery.
http://www.waent.org/archives/2009/vol2-1/parathyroid/parathyroid.htm

Stylohyoid
Digastric
Anterior Belly
 Posterior Belly




Stylohyoid
Mylohyoid
Geniohyoid
Digastric
(post)
Digastric
(ant)
Digastric
(post)
Geniohyoid
Stylothyoid
Mylohyoid
Digastric
(ant)
Digastric (posterior belly)
Sternocleidomastoid

Contents:







Omohyoid
(superior belly)
Common Carotid A.
Internal Carotid A.
External Carotid A.
 Branches
Internal Jugular V.
Hypoglossal N.
Vagus N. (branches)
Parts of Cervical
Plexus


Bifurcation
Branches

Superior Thyroid A.
 Superior Laryngeal A.





Lingual A.
Facial A.
Ascending Pharyngeal A.
Occipital A.
Others:
 Maxillary A.
 Superficial Temporal A.
 Posterior Auricular A.
Occipital A.
Ascending
Pharyngeal A.
Facial A.
Lingual A.
Superior
Thyroid A.
Common
Carotid A.
Subclavian A.

Carotid
Sheath
Carotid Sheath



Internal Jugular V.
Vagus N.
Common Carotid A.

Then, Internal Carotid A
Investing Fascia
Pretracheal Fascia
Carotid
Sheath
Prevertebral
Fascia
Sternocleidomastoid (cut)



VPR C1-C4
Phrenic nerve
Cutaneous branches
* already seen in the posterior triangle

Muscular branches
Fig 8.11 Clinically Oriented Anatomy 5th Ed. Moore & Dalley
Hypoglossal N (CN XII)
.




VPR C1
Ansa cervicalis
Superior root (C1)
Inferior root (C2,3)
N. to thyrohyoid
C2
C3
Nerve to
Thyrohyoid
Inferior root of
Ansa Cervicalis
Superior root of
Ansa Cervicalis
Phrenic N


Phrenic N
Unnamed nerves



prevertebral mm.
N. to thyrohyoid
Ansa cervicalis


Superior root
Inferior root
Fig 7.8, Grant’s Dissector 14th Ed.
Mandible

Contents:


Digastric
(Post. Belly)



Digastric
(Ant. Belly)
Submandibular
gland
Facial A. & V.
Stylohyoid M.
Lymph Nodes
Hypoglossal N
(portion)
Hypoglossal N
(CN XII)
Digastric (Ant. Bellies)

Contents:

Hyoid
Submental
Lymph Nodes