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70 Cards in this Set
- Front
- Back
What is the innervation of the submandibular gland?
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Superior Salivatory nucleus
Nervus Intermedius of Facial Nerve (CN VII) Chorda Tympani Lingual Nerve Submandibular ganglion SYNAPSE Submandibular gland |
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What are the boundaries of the neck?
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Superior: Mandible and Mastoid Process
Posterior: Trapezius Inferior: Clavicle Anterior: Midline of the neck |
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What muscle divides the neck into two triangles?
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Sternocleidomastoid
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What are the two triangles of the neck?
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Anterior and Posterior
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What are the boundaries of the anterior cervical triangle?
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Superior: Body of Mandible, Mastoid and Styloid Process of Temporal Bone
Lateral and Inferior: SCM Anterior: Midline of the neck |
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How many triangles is the anterior cervical triangle divided up into?
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4
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What are the names of the triangles the anterior cervical triangle is divided into?
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Muscular
Carotid Submandibular Submental |
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What are the contents of the muscular triangle?
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Infrahyoid muscles
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What are the borders of the muscular triangle?
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Superior-Lateral: Anterior Belly of Omohyoid
Lateral- Inferior: SCM Medial: Midline of the neck |
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What are the four infrahyoid muscles?
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Omohyoid,superior belly
Sternohyoid Sternothyroid Thyrohyoid |
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Which of the strap muscles are in the same place but are superficial/deep to one another?
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Sternohyoid is superficial
Thyrohyoid is deep and superior SternoTHYroid is deep and inferior |
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What is the function of the strap/infrahyoid muscles?
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Raise and stabilize larynx and hyoid bone during swallowing and talking
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What is the origin and insertion of omohyoid?
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Origin: Scapula
Insertion: Lateral hyoid |
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What is the origin and insertion of sternohyoid?
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Origin: Sternum
Insertion: Hyoid |
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What is the origin and insertion of sternothyroid?
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Origin: sternum
Insertion: Thyroid Cartilage |
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What is the origin and insertion of thyrohyoid?
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Origin: Hyoid
Insertion: Thyroid cartilage |
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What provides innervation of the infrahyoid muscles?
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Ansa cervicalis
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What infrahyoid muscle does ansa cervicalis NOT innervate?
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Thyrohyoid
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What kind of innervation does the ansa cervicalis provide to the infrahyoid muscles?
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motor
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What composes ansa cervicalis?
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ventral rami of C1-C3
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What are the loops of ansa cervicalis?
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Superior root is C1-C2
Inferior root C2-C3 |
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Where is the ansa cervicalis located/can be found?
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Its located in the carotid sheath but its branches can be found in the muscular triangle
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What innervates thyrohyoid?
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Thyrohyoid is innervated by C1 fibers that piggy back on CN XII
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What supplies motor innervation to the larynx?
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Recurrent laryngeal
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What is the exception to the motor innervation of the larynx?
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Cricothyroid which is innervated by the superior laryngeal nerve or the external branch
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What are the boundaries of the carotid triangle?
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Anterior inferior: superior belly of omohyoid
Anterior-Superior: Posterior belly of digastric Posterior-Anterior: Border of SCM |
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what structures are located in the carotid sheath? (5)
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internal jugular
vagus deep cervical lymph nodes common carotid artery internal jugular vein |
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Where is the carotid sheath located?
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Deep to the SCM and omohyoid
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At what level does the common carotid divide into internal and external?
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Upper border of thyroid cartilage (C4)
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What are the two receptors located at the carotid bifurcation?
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Cartoid body
Carotid Sinus |
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What does the carotid sinus do?
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Baroreceptor monitors blood pressure
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What does carotid body do?
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Chemo receptor monitors blood oxygen
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Where does the internal carotid give branches? External carotid?
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Internal gives branches in the skull, external gives branches in the triangle
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What are the branches of external carotid?
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Superior thyroid
Lingual Facial Ascending Pharyngeal Occipital Posterior Auricular |
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What divides the subclavian into three branches?
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Anterior Scalene
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Where is the first, second and third division of the subclavian artery located?
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First - medial to anterior scalene
Second - deep to anterior scalene Third - lateral to anterior scalene |
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What is in the first division of the subclavian?
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Vertebral
Internal Thoracic Thyrocervical Trunk |
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What are the branches of the thyrocervical trunk (and their positions)?
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Suprascapular is most lateral
Then transverse cervical Then suprascapular Most medial is inferior thyroid |
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What is in the second division?
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Costocervical trunk
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What are the branches of the costocervical trunk?
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Deep cervical
Superior intercostal |
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What is in the third part of the subclavian?
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dorsal scapular
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What is the mneumonic for remembering the branches of external carotid?
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Some Angry Lady Figured Out P M S
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What is the positioning of the components of the carotid triangle?
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Medial: Common carotid
Lateral: Internal jugular Deep: Vagus Scattered is cervical lymph nodes ansa embedded in the sheath |
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What is the difference between the carotid body and the carotid sinus?
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Carotid sinus is the inflated part of the internal carotid
Carotid body is a structure sitting in the middle of the bifurcation of intl and extl carotid |
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What are the boundaries of the submandibular triangle?
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Superior: Body of mandible and styloid process of temporal bone
Posterior Inferior: Posterior belly of digastric Anterior Inferior: Anterior belly of digastric |
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What does the submandibular triangle contain?
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Submandibular gland
Submandibular duct Stylohyoid muscle Mylohyoid muscle |
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What is the origin and insertion of stylohyoid?
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Origin: Styloid process of temporal bone
Insertion: Hyoid bone |
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What is the innervation of stylohyoid?
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CN VII facial
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What is the origin and insertion of mylohyoid?
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Origin: Body of mandible
Insertion: Midline raphe and hyoid |
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What is the innervation of the mylohyoid?
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The mylohyoid branch of inferior aleovolar of V3 (trigeminal mandibular branch)
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What are the suprahyoid muscles? (3)
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Mylohyoid
stylohyoid digastric |
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What do the suprahyoid muscles do?
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elevate the mandible
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What is the path of the sublandibular duct?
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Exits submandibular gland anteriorly
Superficial to hyoglossus muscle oral cavity near frenulum of tongue Deep and then superficial to lingual nerve |
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What are the borders of the submental triangle?
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Superior: anterior belly of right and left digastric
Inferior: Hyoid bone Floor: Myohyoid |
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What is the content of the submental triangle?
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Submental lymph nodes
Small veins that form anterior jugular veins |
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What is the lymph drainage of the neck region?
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Deep cervical lymph nodes
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What is the lymphatic drainage of the submental region?
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Submental nodes
Juguloomohygoid node |
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What are the two components of the posterior cervical triangle?
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Occipital triangle
Supraclavicular triangle |
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What are the boundaries of the posterior triangle?
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Anterior: posterior border of SCM
Posterior: Anterior border of trap Inferior: Clavicle |
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What structure divides the two posterior triangles?
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Posterior belly of omohyoid
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What is the relationship of the two triangles?
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Occipital is superior then omohyoid then supraclavicular triangle
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What are the boundaries of the occipital triangle?
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Anterior: Posterior border of SCM
Inferior: inferior belly of omohyoid Posterior: Trap Floor: Splenius cervicus, Levator Scapulae |
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What are the contents of the occipital triangle?
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Splenius muscle
Levator scapulae muscle Nerves of cervical plexus |
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What are the cervical plexus nerves?
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Supraclavicular
Lesser occipital Greater auricular Transverse cervical |
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What other nerve besides the cervical plexus nerve is in the occipital triangle?
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Spinal accessory
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Where do all the nerves in the occipital triangle come from (not originate)?
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under SCm
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What cervical roots do each of the cerivcal plexus nerves come from?
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lesser occipital C2-C3
greater auricular C2-C3 transverse cervical C2-C3 supraclavicular C3-C4 |
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What are the borders of the supraclavicular triangle?
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Anterior: SCM
Superior: inferior belly of omohyoid Superior-posterior: trap and inf belly of omohyoid Floor: Middle and posterior scalenes |
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What is the difference between digastric and omohyoid in the naming of the two parts?
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digastric is anterior and posterior
omohyoid is superior and inferior |
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What are the most abundant structures in the supraclavicular triangle?
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Brachial plexus
Nerves from brachial plexus Phrenic Nerve Transverse cervical artery suprascapular artery Subclavian vein |