Head and Neck, Topnotch Flashcards
Point of meeting and articulation of the frontal, parietal, squamous temporal and greater wing of sphenoid
Pterion
Point of meeting and articulation of the frontal, parietal, squamous temporal and greater wing of sphenoid
Pterion
Skull fracture at the pterion: May lacerate the
Middle meningeal artery
Skull fracture at the pterion: Intracranial hemorrhage
Epidural or extradural hematoma
Skull fracture at the pterion: T/F May compress brainstem
T
Fracture of petrous temporal bone: Signs
1) Otorrhea
2) Hearing loss
3) Facial nerve damage
Maxillary fracture: Horizontal fracture superior to the maxillary alveolar process
LeFort I
Maxillary fracture: Posterolateral parts of maxillary sinuses; central part of face separated from cranium
LeFort II
Maxillary fracture: Horizontal fracture that passes through superior orbital fissures, ethmoid, and nasal bones, extending to greater wing of sphenoid; Maxillae and zygomatic bone separated from cranium
LeFort III
LeForte fractures
Image
Layer of the scalp: Allows free movement of scalp proper
Loose connective tissue
Layer of the scalp: Where emissary veins are found
Loose connective tissue
Premature closure of skull sutures
Craniosynostosis
Craniosynostosis: Premature closure of sagittal suture
Scaphocephaly
Craniosynostosis: Premature closure of coronal suture
Oxycephaly/acrocephaly
Craniosynostosis: Premature closure of coronal and lambdoid sutures on one side of skull
Plagiocephaly
Craniosynostosis: Long and narrow skull
Scaphocpephaly
Primary brain vesicles differentiate into secondary vesicles at ___ week of development
5th
Primary brain vesicles differentiate into secondary vesicles at ___ week of development
5th
Skull fracture at the pterion: May lacerate the
Middle meningeal artery
Skull fracture at the pterion: Intracranial hemorrhage
Epidural or extradural hematoma
Skull fracture at the pterion: T/F May compress brainstem
T
Fracture of petrous temporal bone: Signs
1) Otorrhea
2) Hearing loss
3) Facial nerve damage
Maxillary fracture: Horizontal fracture superior to the maxillary alveolar process
LeFort I
Maxillary fracture: Posterolateral parts of maxillary sinuses; central part of face separated from cranium
LeFort II
Maxillary fracture: Horizontal fracture that passes through superior orbital fissures, ethmoid, and nasal bones, extending to greater wing of sphenoid; Maxillae and zygomatic bone separated from cranium
LeFort III
LeForte fractures
Image
Meningeal layer sends ___ septa inward to restrict displacement of brain associated with acceleration and deceleration when the head is moved
4
Layer of the scalp: Where emissary veins are found
Loose connective tissue
Premature closure of skull sutures
Craniosynostosis
Craniosynostosis: Premature closure of sagittal suture
Scaphocephaly
Craniosynostosis: Premature closure of coronal suture
Oxycephaly/acrocephaly
Craniosynostosis: Premature closure of coronal and lambdoid sutures on one side of skull
Plagiocephaly
Craniosynostosis: Long and narrow skull
Scaphocpephaly
Craniosynostosis: Tower skull
Oxycephaly/acrocephaly
Primary brain vesicles differentiate into secondary vesicles at ___ week of development
5th
Adult derivative of Neural tube
CNS
Adult derivatives of neural crest
1) PNS and ANS
2) Cranial, spinal, and autonomic ganglia
3) Meninges
4) Pigment cells of retina
5) Cells of adrenal medulla
Daily folic acid requirement 3 months prior to conception and through gestation to prevent NTDs
400 mg/day
Landmark to separate supra- from infratentorial structures
Tentorium cerebelli
T/F Infratentorial structures are located inferior to the foramen magnum
F
Supratentorial structures
1) Cerebrum
2) Basal ganglia
3) Thalamus
4) Hypothalamus
5) CN I and II
Infratentorial structures
1) Cerebellum
2) Brainstem
3) CN III to XII
Meninges from outermost to innermost
DAP
1) Dura
2) Arachnoid
3) Pia
Layers of dura mater
1) Endosteal layer covering inner surface of bone
2) Meningeal layer
Meningeal layer sends ___ septa inward to restrict displacement of brain associated with acceleration and deceleration when the head is moved
4
Meningeal septa: Between 2 cerebral hemispheres
Falx cerebri
Meningeal septa: Roofs over the posterior cranial fossa, covering the upper surface of the cerebellum
Tentorium cerebelli
Meningeal septa: Between 2 cerebellar hemispheres
Falx cerebelli
Meningeal septa: Forms roof of sella turcica
Diaphragma sella
Meningeal septa: Sickle-shaped
Falx cerebri
Meningeal septa: Crescent-shaped
Tentorium cerebelli
Meningeal septa: Small, sickle-shaped
Falx cerebelli
Meningeal septa: Small, circular
Diaphragma sella
Falx cerebri is attached anteriorly to the
1) Frontal crest
2) Crista galli
Meningeal septa: Supports the occipital lobes
Tentorium cerebelli
Meningeal septa: Attached to internal occipital crest
Falx cerebelli
Dura mater: Sensory nerve supply
1) Trigeminal nerve
2) C1-3
Dura mater: Sensory supply above tentorium
Trigeminal nerve
Dura mater: Sensory supply below tentorium
C1-3
Dura mater: Above tentorium, headache is referred to the
Forehead and face
Dura mater: Below tentorium, headache is referred to the
Back of the head and neck
Where CSF is located between meninges
Subarachnoid space
Meninges: Made of mesothelial cells
Pia mater
Gyrus-functional area: Precentral
Primary sensory
Gyrus-functional area: Postcentral
Primary motor
Gyrus-functional area: Heschl’s gyrus
Primary auditory
Gyrus-functional area: Inferior frontal grove
Wernicke’s area
Broca’s area: Primary motor
BA 4
Broca’s area: Primary somesthetic
BA 3,1,2
Broca’s area: Primary visual
BA 17
Broca’s area: Primary auditory
BA 41,42
Provides voluntary control of skeletal muscles
Pyramidal system
Pyramidal system: Consists of
1) Corticobulbar
2) Anterior corticospinal
3) Lateral corticospinal