Neck 3 - BC Flashcards
Anterior boundary of the posterior triangle
the posterior border of the SCM
posterior boundary of the posterior triangle
anterior border of the trapezius
inferior boundary of the posterior triangle
middle third of the clavicle
roof boundary of the posterior triangle
investing layer of deep cervical fascia
floor boundary of the posterior triangle
scalene muscles covered by the prevertebral layer of deep cervical fascia
The floor of the posterior
triangle is formed by the
prevertebral fascia overlying the
anterior, middle, and posterior scalene muscles
The inferior belly of the omohyoid extends into
the posterior triangle and further subdivides it
into what 2 triangles
occipital triangle
omoclavicular (subclavian) triangle
the following are contents of what triangle:
subclavian artery
thyrocervical trunk
- transverse cervical
- suprascapular
Dorsal Scapular
External Jugular Vein
Subclavian Vein
Posterior Triangle
the following are contents of what triangle:
Roots of brachial plexus
Cervical plexus
- sensory (GAN, TCN, SCN, LON)
Phrenic Nerve
CN XI
Posterior Triangle
Which CN enters the anterior border of the trapezius muscle
CN XI
Which CN supplies the SCM and trapezius muscles
CN XI
what would a surgeon need to be careful/aware of when dissecting the posterior triangle
spinal accessory nerve –> can cause weakness of shoulder elevation or permanent pain because innervation to the trapezius has been disrupted
Base of anterior boundary of the anterior triangle
Inferior mandible
Which triangle occupies the anterior neck as an inverted triangle
Anterior Triangle
Base of anterior boundary of the anterior triangle
inferior border of mandible
Apex boundary of the anterior triangle
manubrium of sternum
Anterior boundary of the anterior triangle
midline of neck
Posterior boundary of the anterior triangle
SCM
Roof boundary of the anterior triangle
skin
superficial fascia of neck
deep investing fascia of neck
Floor boundary of the anterior triangle
pharynx
larynx
thyroid gland
Lateral boundary of the submental triangle
Right and left anterior belly of the digastric muscles
Posterior/inferior boundary of the submental triangle
hyoid bone
Superior (floor) boundary of the submental triangle
right and left mylohyoid muscles
Inferior (roof) boundary of the submental triangle
investing layer of deep cervical fascia
which triangle contains the following:
submental lymph nodes
small veins that unite to form the anterior jugular vein
Submental Triangle of the Anterior Triangle
Medial boundary of the submandibular triangle
anterior belly of the digastric muscle
posterior boundary of the submandibular triangle
posterior belly of the digastric muscle
lateral boundary of the submandibular triangle
inferior border of the mandible
superior (floor) boundary of the submandibular triangle
mylohyoid muscle and hyoglossus muscle
inferior (roof) boundary of the submandibular triangle
investing layer of deep cervical fascia
which triangle has the following contents:
submandibular gland and LNs
CN XII
CN VII
CN V3
facial artery
facial vein
lingual artery
lingual vein
Submandibular Triangle of the Anterior Triangle
what nerve arises from the inferior alveolar nerve
nerve to the mylohyoid (V3)
which vein travels superficial to the submandibular gland
facial vein
which artery travels deep to the submandibular gland
facial artery
Anterior boundary of the carotid triangle
superior belly of the omohyoid muscle
Superior (floor) boundary of the carotid triangle
posterior belly of the omohyoid muscle
Posterior boundary of the carotid triangle
SCM
Superficial (roof) boundary of the carotid triangle
investing layer of deep cervical fascia
Which CN travels from the jugular foramen into
the mediastinum
CN X
Which CN travels within the carotid sheath posterior to & in between the internal jugular vein and common carotid artery through the carotid triangle
CN X
Which CN enters the submandibular triangle deep to the posterior belly of the digastric muscle to supply the intrinsic and most extrinsic muscles of the tongue
CN XII
Which CN carries hitch hiking C1 spinal nerve fibers that form the superior root of the ansa cervicalis and then a C1 branch to thyrohyoid and geniohyoid muscle
CN XII
What is usually is embedded in the anterolateral aspect of the carotid sheath
ansa cervicalis
superolateral boundary of the muscular triangle
superolateral border of superior belly of omohyoid muscle
inferolateral boundary of the muscular triangle
anterior border of SCM
midline boundary of the muscular triangle
median plane of the neck
superficial boundary of the muscular triangle
investing layer of deep cervical fascia
which triangle contains the following:
infrahyoid muscles
cervical viscera
- esophagus
- larynx
- thyroid cartilage
- cricoid cartilage
Trachea
Thyroid Glands
Parathyroid Glands
Transverse Cervical Nerves
Branches of Ansa Cervicalis
Anterior Jugular Veins
Superior Thyroid Arteries
Superior Thyroid Veins
Middle Thyroid Veins
Inferior thyroid arteries
Inferior thyroid veins
Recurrent Laryngeal Nerves
Muscular Triangle of the Anterior Triangle
