Anatomical triangles Flashcards
What are the boundaries of the suboccipital triangle?
- rectus capitis posterior major
- obliquus capitis superior (lateral)
- obliquus capitis inferior
What is the floor of the suboccipital triangle?
- posterior arch of C1
- atlanto-occipital membrance
What does the suboccipital triangle contain?
- 3rd part of the vertebral artery
- suboccipital nerve
- suboccipital veins
What are the boundaries of the anterior cervical triagnle?
- anterior midline
- inferior ramus of the mandible
- anterior border of the scm
What are the contents of the anterior cervical triangle?
4 different triangles
- carotid
- muscular
- submental
- muscular
What are the boundaries of the carotid triangle?
- superior belly of the omohyoid
- posterior belly of the digastric
- SCM
What makes up the floor of the carotid triangle?
- hyoglossus
- middle and inferior constrictor muscles
What are the contents of the carotid triangle?
- CN 11, 12
- carotid sheath
- Ansa cervicalis
What is in the carotid sheath?
- common carotid artery
- external carotid artery
- internal carotid artery
- internal jugular vein
- CN 10
What are the boundaries of the submandibular triangle?
- posterior and anterior bellies of the digastric
- inferior ramus of the mandible
What makes up the floor of the submandibular triangle?
- mylohyoid
- hyoglossus
- middle constrictor
What are the contents of the submandibular triangle?
- submandibular gland
- facial vein and artery
- hypoglossal nerve
- mylohyoid nerve
What are the boundaries of the submental triangle?
- anterior bellies of digastric and hyoid
What is the floor of the submental triangle?
- mylohyoid msucles
What are the contents of the submental triangle?
- submental lymph nodes
- submental veins
What are the boundaries of the muscular triangle?
- SCM
- superior belly of omohyoid
- anterior midline of the neck
What are the contents of the muscular triagnle?
- sternohyoid
- sternothyroid
- thyrohyoid
- thyroid
- trachea
- larynx
What are the boundaries of the posterior cervical triangle?
- SCM
- trapezius
- middle third of the clavicle
What divides the posterior cervical triangle?
the inferior belly of the omohyoid divides
- occipital and supraclavicular triangle
What makes up the floor of the posterior cervical triagnle?
- splenius capitis
- levator scapulae
- scalenus posterior, medius and anterior
What are the contents of the posterior cervical triangle?
- 6 vessels
- 7 nerves
What are the 6 vessels contained within the posterior cervical triangle?
- subclavian artery
- suprascapular
- transverse cervical
- occipital arteries
- subclavian vein
- jugular vein
What are the 7 nerves of the posterior cervical triangle?
- great auricular
- lesser occipital
- supraclavicular
- transverse cervical nerves
- trunks of the brachial plexus
- CN 11
- sometimes phrenic nerve
What are the boundaries of the Triangle of Auscultation?
- trapezius
- latissimus dorsi
- medial border of scapula
