Head and Neck Flashcards
Primary curvatures
Thoracic and sacral
MC site of berry aneurysm
ACOM
Structures within the vertebral canal
Spinal cord, dorsal and ventral nerve roots, meninges
Where are the spinal nerves located?
Outside the vertebral canal - exit through the intervertebral Foramen
Vertebral dislocation without fracture
Cervical only - articular surfaces inclined horizontally
Vertebral dislocation with fracture
Thoracic and lumbar - articular surfaces inclined vertically
Fish mouth deformity of X-ray
Sickle cell anemia - central depression in vertebral body
Absent vertebral arch with no neurologic deficits
Spina bifida occulta
Scottie dog sign
Fracture of neck of the dog - fracture of pars interarticularis
View to see Scottie dog sign
Oblique view on X-ray
Usual site of spondylolisthesis
Degenerative: L5-L5
Congenital: L5-S1
Anterior subluxation
Bamboo spine on X-ray
Ankylosing spondylosis
Ankylosing spondylosis usually affects what region
Sacroiliac
Remnant of notochord
Nucleus pulposus
Usual herniation of nucleus pulposus
Posterolaterally
NP –> PL
MC level of disc herniation
L5-S1
Common s/s of disc herniation
If at L5-S1 usually pain at back and lateral leg radiating to sole of the foot (sciatica)
Plexus involved in posterior epistaxis
Woodruff’s plexus
Plexus involved in anterior epistaxis
Hesselbach’s plexus/ Little’s area
Kieselbach?
Treatment of choice for Juvenile nasopharyngeal angiofibroma
Angioembolization
Soap bubble on X-ray
Ameloblastoma
MC malignant tumor of parotid gland
Mucoepidermoid carcinoma
Trigeminal neuralgia - what ganglion?
Gasserian
Ganglion of CN 7
Geniculate ganglion
Sensory innervation: tip of nose
V1
Sensory innervation: side of nose
V2
Sensory innervation: lower lip
V3
Sensory innervation: upper lip
V2
Sensory innervation: temples
V3
Innervation: muscles of mastication
V3
Innervation: stylohyoid
CN 7
Innervation: platysma
CN 7
Innervation: anterior digastric
CN 5
Innervation: superior omohyoid
Ansa cervicalis
Sensory innervation: scalp near hair line anteriorly
V1
Sensory innervation: posterior scalp
C2
Sensory innervation: shoulder
C5
Sensory innervation: thumb
C6
Which cranial nerves exit from the pons
CN 5, 6, 7, 8
Glands innervated by CN 7
Submandibular
Sublingual
Lacrimal
Inn of parotid gland
CN 9
Ear muscle innervated by CN 7
Stapedius
Innervation of tensor tympani
V3
Innervation: muscles for facial expression
CN 7
Trumpeter’s muscle
Buccinator
For blowing