anterior triangle of the neck n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
ANTERIOR TRIANGLE of the NECK PowerPoint Presentation
Download Presentation
ANTERIOR TRIANGLE of the NECK

Loading in 2 Seconds...

play fullscreen
1 / 15

ANTERIOR TRIANGLE of the NECK - PowerPoint PPT Presentation


  • 192 Views
  • Uploaded on

ANTERIOR TRIANGLE of the NECK. Borders. Superior: Mandible. Posterior: Sternocleidomastoid (anterior border). Anterior: Midline of the neck. Subdivisions. Muscular triangle. Submandibular triangle. Carotid triangle. Contents of Muscular Triangle. Digastric:

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'ANTERIOR TRIANGLE of the NECK' - Lucy


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
borders
Borders
  • Superior:

Mandible.

  • Posterior:

Sternocleidomastoid (anterior border).

  • Anterior:

Midline of the neck.

subdivisions
Subdivisions
  • Muscular triangle.
  • Submandibular triangle.
  • Carotid triangle.
contents of muscular triangle
Contents of Muscular Triangle
  • Digastric:

Anterior and posterior bellies.

Innervated by two different cranial nerves.

  • Stylohyoid.
  • Mylohyoid.
contents of muscular triangle1
Contents of Muscular Triangle
  • Geniohyoid.
  • Sternohyoid.
  • Sternothyroid.
  • Thyrohyoid.
  • Omohyoid.
carotid system
Carotid System
  • Common carotid.
  • Bifurcation:

Blood monitors:

Carotid sinus:

Dilated terminal portion of common carotid.

Baroreceptor.

Carotid body:

Chemoreceptor.

Internal carotid:

Has no branches in the neck.

External carotid.

external carotid branches
External Carotid Branches
  • Superior thyroid (anterior).
  • Ascending pharyngeal (medial).
  • Lingual (anterior):

Crossed by hypoglossal nerve at its origin.

  • Facial (anterior).
  • Occipital (posterior).
  • Posterior auricular (posterior).
  • Superficial temporal (terminal).
  • Maxillary (terminal).
characteristics and branches of cervical plexus
Characteristics and Branches of Cervical Plexus
  • From ventral rami of C1-4.
  • Hypoglossal nerve (CN XII).
  • Sensory branches:

Great auricular (C2-3).

Lesser occipital (C2(3)):

Ventral ramus of C2.

Greater occipital is dorsal ramus of C2.

Transverse cervical (C2-3).

Supraclavicular (C3-4).

characteristics and branches of cervical plexus1
Characteristics and Branches of Cervical Plexus
  • Motor branches:

To prevertebral muscles:

See syllabus.

To levator scapulae muscle (C3-4).

To scalene muscles.

Ansa cervicalis:

Supplies infrahyoid muscles.

Except thyrohyoid.

Phrenic nerve (C3,4,5).

ansa cervicalis
Ansa Cervicalis
  • Nerve to geniohyoid:

C1 via hypoglossal nerve.

  • Nerve to thyrohyoid.
  • Superior and inferior roots:

Omohyoid.

Sternothyroid.

Sternohyoid.

deep neck
Deep Neck
  • Subclavian artery:

Review from syllabus.

  • Scalene muscles:

Review from syllabus.

  • Thyroid gland.
  • Trachea.
  • Esophagus.
  • Thoracic duct and right lymphatic duct.
deep neck1
Deep Neck
  • Branches of vagus nerve:

Review from syllabus.

  • Sympathetic trunk:

Ascends on anterior surfaces of longus colli and longus capitis muscles.

Lies posterior to common and internal carotids.

Lies deep to carotid sheath.

Contains preganglionic sympathetic fibers from T1 and T2 and T2 and GVA fibers as well from same levels.

sympathetic trunk ganglia
Sympathetic Trunk Ganglia
  • Superior cervical ganglion:

Elongated structure on longus capitis muscle.

At level of C1 and C2.

Postganglionic sympathetic fibers from this ganglion supply all smooth muscles and glands of the head.

sympathetic trunk ganglia1
Sympathetic Trunk Ganglia
  • Middle cervical ganglion.
  • Inferior cervical ganglion.
  • Stellate ganglion:

Fused inferior cervical ganglion and T1 ganglion.