Quiz 1 Flashcards
What is the anatomical name for the “Adam’s Apple”?
What cervical vertebrae level is it found?
Laryngeal prominence (part of Thyroid cartilage) C4-5
What bone of the anterior neck is at C3 vertebral level?
Hyoid bone
What anterior neck cartilage is at C6 level?
Cricoid cartilage (a cartilage of the larynx)
Which spinal nerves innervate superficial neck?
C2-4 (C2 includes angle of mandible)
Which nerve innervates the anterior 2/3 of head (=face)?
Trigeminal Nerve (V)
What are the borders of the Carotid Triangle?
Post Belly of Digastric m.
Sup Belly of Omohyoid m.
SCM
What is contained within the Carotid Triangle?
Common carotid artery & bifurcation into internal/external carotid aa. Internal jugular vein Vagus nerve (X)
What two triangles of the neck are Posterior Triangles?
Supraclavicular and Occipital
What are the borders of the Supraclavicular triangle?
Clavicle
SCM
Inferior belly of Omohyoid m.
What are the borders of the Occipital triangle?
Trapezius
SCM
Inferior belly of Omohyoid
What is found in the Supraclavicular triangle?
Subclavian a. and v.
Scalene m.
Phrenic n.
Elements of brachial plexus
What is found in the Occipital triangle?
XI nerve
Cutaneous nerves from cervical plexus
What makes up the cervical plexus?
Ventral rami C1-4 spinal nerves
What are the 5 types of branches of the cervical plexus?
4 Cutaneous branches a)Lesser occipital b)Great auricular c)Transverse cervical d)Supraclavicular
Communicating/hitchhiker branches
Ansa cervicalis n.
Phrenic n.
Motor branches (to muscles of deep ant. neck)
How many branches in the neck does the internal carotid artery have?
Zero
How many branches in the neck does the external carotid artery have?
1) Superior Thyroid 2) Ascending Pharyngeal
3) Lingual 4) Facial 5) Occipital
6) Posterior Auricular 7) Maxillary
8) Superficial Temporal
Where does the right common carotid artery originate?
Brachiosephalic artery
Where does the left common carotid artery originate?
Aortic arch
What cervical level does the common carotid bifurcate to the internal and external carotid arteries?
C3-4
15
Which terminal branch of the external carotid artery is the biggest?
Maxillary artery
18
What are the four branches of the subclavian arteries?
1) Internal Thoracic
2) Vertebral
3) Thyrocervical trunk
a-inferior thyroid b-ascending cervical c-tranverse cervical d-suprascapular
4) Costocervical trunk
a-deep cervical branch b-sup. intercostal branch
What ventral ramii fibers make up the lesser occipital nerve?
Where does this nerve innervate?
C2 fibers
-Innervates skin of post. scalp behind ear
What ventral fibers make up the great auricular nerve?
Where does this nerve innervate?
C2, C3
Sensory innervation to skin below and anterior to external ear and part of ear and skin over angle of mandible
What ventral ramii nerve roots form the Transverse Cervical nerve?
What does this nerve innervate?
C2, C3
Innervates most skin of the anterior neck
What ventral ramii nerve roots form Supraclavicular nerve?
What does this nerve innervate?
C3, C4
Innervates skin of base of neck, upper thorax, and top of the shoulder
Radiates across clavicular region; has 3 branches
a) medial
b) intermediate
c) lateral
Hitchhiking Nerves:
C1 hitchhikes w/ ? and innervates ?
C2,3,4 hitchhike w/ ? and innervate?
C1 hitchhikes w/ cranial nerve XII - hypoglossal n.
Motor inn. to Geniohyoid m. and Thyrohyoid m.
C2,3,4 hitchhikes w/ cranial n. XI - spinal accessory n.
Sensory inn. to SCM (C2) and Trapezius (C3,4)
What ventral ramii roots form Ansa Cervicalis?
What does it innervate?
C1, 2, 3
Innervates all infrahyoid muscles except thyrohyoid m.
(Sternohyoid, sternothyroid, omohyoid)
What are the 2 roots of the ansa cervicalis calles?
Superior root (C1) a.k.a. Descending Hypoglosal Ramus of ansa cervicalis Inferior Ramus (C2,3) a.k.a. Descending cervical ramus of ansa cervicalis
What ventral ramii make up the phrenic nerve?
What does it innervate?
C3, 4, 5
Motor and sensory to diaphragm
Motor to scalene mm. & prevertebral mm.
What are the 4 infrahyoid muscles?
Sternohyoid
Sternothyroid
Omohyoid
Thyrohyoid
What is the origin and insertion for the omohyoid m?
Body of Hyoid, connected by tendinous sling on clavicle, Sup. border of Scapula
What nerves innervate the infrahyoid muscles?
Ansa cervicalis = sternohyoid, sternothyroid, omohyoid
C1 = thyrohyoid
What are the 4 paired suuprahyoid muscles?
Digastric
Stylohyoid
Mylohyoid
Geniohyoid
Why do the digastric ant and post bellies have 2 different innervations? What are they?
They have 2 different embryonic origins
Ant. belly = V n. (trigeminal)
Post. belly = VII n. (facial)
What nerve innervates
Stylohyoid m.
Mylohyoid m.
Geniohyoid m.
Styloid = VII Mylohyoid = V Geniohyoid = C1
