Back and Neck Flashcards
Drainage of thryoid gland
Sup, middle, inf thyroid
Blood supply of isthmus, present in 12% pop
Thyroidea ima a.
Tracheal rings assoc with isthmus of thyroid galnd
2nd-4th tracheal rings
Fascia that surrounds the thyroid gland
Pretracheal fascia
Fibrous, muscular band connecting the pyramidal lobe to the hyoid bone
Levator glandulae thyroidea
Remnant of thyroglossal duct
Foramen cecum
Most common location of ectopic thyroid gland
lingual
Tumors in oral cavity drain in to what LN
Levels I-III
Tumors in oropharynx, hypopharynx, larynx drain in to what LN
Levels 2-4
Tumors in nasopharynx and thyroid drain in to what LN
Level V
Tensor of vocal cord
Cricothyroid
Blood supply of the thyroid gland
Sup and Inf thyroid a.
Superficial muscle of the back; connects w/ shoulder girdle
Erector spinae
Intermediate muscle of the back; involved w/ movement of thoracic cage
Transversospinalis
Deep muscles of the back
Interspinalis
Intertransversarii
Boundaries of the triangle of auscultation
Latissimus dorsi
Trapezius
Medial border of scapula
Boundaries of the triangle of petit (site of lumbar hernia)
Ext oblique
Latissimus dorsi
Iliac crest
B/S of the cervical back
Occipital a.
Vertebral a.
Deep cervical a.
B/S of thoracic back
Post intercostal a.
B/S of lumbar back
Subcostal a.
Lumbar a.
B/S of sacral back
Iliolumbar a.
Lat sacral a.
Veins of the back
Ext vertebral venous plexus
Int vertebral venous plexus
N/S of the back
Post rami of 31 spinal nerves
Layers of cervical fascia
Superficial
Pretracheal
Prevertebral
Fascia that splits to enclose SCM and trapezius; investing layer
Superficial cervical fascia
Thin layer surrounding the thyroid and parathyroid gland; forms false capsule of thyroid
Pretracheal layer of cervical fascia
Thick layer forming fascial form of posterior triangle; extends to 1st rib into the axilla to form axillary sheath
Prevertebral layer of cervical fascia
Lateral content of carotid sheath
Internal jugular v.
Medial contents of carotid sheath
Common and internal carotid a.
Posterior content of the carotid sheath
Vagus n.
Potential space containing loose CT bounded by deep cervical fascia
Retropharyngeal space
Most superficial muscle of the neck
Platysma
Vertebral level of hyoid bone
C3
Only bone that does not articulate w/ another bone
Hyoid bone
Suprahyoid muscles
Digastric (Ant, Post.)
Mylohyoid
Stylohyoid
Geniohyoid
Infrahyoid muscles
Deep: Thyroid, Sternohyoid
Superficial: Omohyoid, Sternohyoid
Action of suprahyoid muscles
Elevates hyoid bone
Muscles that depress the hyoid
Omohyoid
Sternohyoid
Neck muscle that depresses larynx and hyoid
Thyrohyoid
Muscle that depresses the larynx
Sternothyroid
Boundaries of the post triangle
Trapezius
Clavicle
SCM
Boundaries of the anterior triangle of the neck
Digastric
SCM
Sternohyoid
Boundaries of the submental triangle
Ant belly of digastric m.
Hyoid bone
Muscular floor of the submental triangle
Mylohyoid
Boundaries of the submandibular triangle
Ant and post bellies if digastric m.
Inf border of the mandible
Boundaries of the carotid triangle
Sup belly of omohyoid
Post belly of digastric
Ant border of SCM
Where is the carotid pulse easily palpated?
Beneath the ant border of SCM at the lvl of the superior border of thyroid cartilage
Boundaries of muscular triangle
Sup. belly of omohyoid
Ant. belly of digastric
Ant. belly of SCM
Contents of the muscular triangle
Sternohyoid, sternothyroid, thyrohyoid
Thyroid
Parathyroid
Larynx
What nerve crosses the occipital triangle?
Accessory n.
What 2 BVs crosses the supraclavicular triangle?
Ext jugular v.
Subclavian a.