Download ANTERIOR and POSTERIOR TRIANGLES of NECK

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts
no text concepts found
Transcript
ANTERIOR and POSTERIOR
TRIANGLES of NECK
Gross HSB Reviewer
Courtesy of Katherine Joy N. Lumucso 1-A2
FEU-NRMF SY 2005-2006
Anterior Triangle of Neck
Submental
Triangle
Boundaries:
Apex – Mandibular symphysis
bellies of Digastric muscle
Inferior – Body of hyoid bone
Floor – Mylohyoid muscle
Lateral – Right & left anterior
Contents:
Submental lymph nodes
Veins forming Anterior jugular vein
Submandibular
or Digastric
Triangle
Boundaries:
Lateral – Anterior & posterior
bellies of Digastric muscle
(1)
Superior – Inferior border of
mandible (2)
Floor – Mylohyoid muscle
(3), Hyoglossus muscle, and
Middle constrictor of pharynx
1
2
3
Contents:
Submandibular gland & duct
CN XII, Nerve to mylohyoid
Submental artery
Submental lymph nodes
Suprahyoid muscles
Carotid
Triangle
Boundaries:
Superior belly of Omohyoid
muscle (1)
Posterior belly of Digastric
muscle (2)
Anterior border of SCM (3)
Contents:
Carotid sinus
2
Carotid body
3 Carotid sheath (Common
1 carotid artery, CN X, IJV)
Ansa cervicalis (supply
Infrahyoid muscles)
Muscular
Triangle
Boundaries:
Superior belly of Omohyoid
muscle (1)
Anterior midline of the neck (2)
Anterior border of SCM (3)
1
Contents:
2 Infrahyoid muscles
3 (Sternohyoid, Sternothyroid,
Thyrohyoid, Omohyoid)
Viscera of neck (Thyroid
gland, Parathyroid glands,
Larynx)
Suprahyoid
Muscles
Mylohyoid
Digastric (Anterior belly)
Geniohyoid
Digastric (Posterior belly)
Stylohyoid
Infrahyoid
Muscles
Thyrohyoid
Omohyoid (superior belly)
Sternohyoid
Sternothyroid
1
1 : Internal jugular vein
2
2 : Common carotid artery
Carotid
Arteries
External carotid artery
Internal carotid artery
Common carotid artery
1 : Omohyoid (superior belly)
2 : Sternohyoid
3 : SCM (reflected)
3
1
2
2
1
3
1:
With ARROW:
Internal jugular vein
With RED PIN:
Sternohyoid muscle
With RED PIN:
Sternocleidomastoid muscle
With RED PIN:
Right common carotid artery
Posterior Triangle of Neck
Occipital
Triangle
Supraclavicular
Triangle
2
3
11
7a
5
4
6
7b
1
8
9
10
1 : Trapezius
2 : Splenius capitis
3 : Levator scapulae
4 : Scalenus posterior
5 : Scalenus medius
6 : Omohyoid (inf. belly)
7a : SCM (sternal head)
7b : SCM (clavicular head)
8 : Brachial plexus
9 : R. Subclavian artery
10 : R. Subclavian vein
11 : Anterior triangle of neck
1 : Trapezius
2 : Semispinalis capitis
3 : Splenius capitis
4 : Levator scapulae
5 : Scalenus medius
6 : Scalenus anterior
7 : SCM
8 : Parotid gland
9 : Parotid (Stensen’s)
duct
9
8
2
3
7
1
4
5
6
R. Anterior belly of
Digastric
Stylohyoid
R. Posterior belly
of Digastric
Thyrohyoid muscle
Omohyoid (superior
belly)
Sternohyoid
Anterior jugular vein
5
4
6
7
2
1
3
8
10
9
1 : Scalenus anterior
2 : Scalenus medius
3 : Scalenus posterior
4 : Levator scapulae
5 : Splenius capitis
6 : Thyrohyoid
7 : L. Common carotid artery
8 : Brachial plexus
9 : L. Subclavian artery
10 : L. Subclavian vein
Related documents