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25 Cards in this Set
- Front
- Back
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Collection of cell bodies within the CNS
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Nucleus
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Bundle of axons within the CNS
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Tract
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Collection of cell bodies outside the CNS
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Ganglion
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Bundle of nerve fibers outside the CNS
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Nerve
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Skeletal Muscle from the embryo develops from ___________ and ______________
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Branchial arches & Somites
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The branchial arches give rise to....
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cranial nerves and skeletal muscle of head and neck
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Somites give rise to ...
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spinal nerves
muscle mass pair --> vertebra some cranial nerves and head/neck muscles |
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Spinal nerves that carry sensory information from a specific area of the skin and are useful in determining nerve damage
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Dermatones
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1st Branchial or Pharyngeal Arch gives rise to...
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- Cranial Nerve V or the Trigeminal Nerve (Opthalamic, Mandibular, Maxillary)
- Mastication |
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2nd Branchial or Pharyngeal Arch gives rise to...
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- Cranial nerve VII or the facial nerve
- facial expression |
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3rd Branchial or Pharyngeal arch gives rise to
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- Cranial nerve IX or the glossopharyngeal nerve
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4th and 6th Branchial or Pharyngeal arches give rise to...
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-Cranial Nerve X or the Vagus Nerve
- Pharynx and larynx |
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ossification: mesenchyme --> cartilage formation --> bone formation
Example in skull |
Endochondral ossification
Base of skull |
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ossification: mesenchyme --> bone
Example is skull |
Intramembranous
Facial (viscerocranium) and cranium vault (neurocranium) |
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Meeting of two bones that disappear?
What is the popular one in babies? |
symphysis
Maxillary symphysis |
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What is the significance of fontanelles in infants?
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Anterior fontanelle:
-Bulging --> Increased intercranial pressure -Depressed --> dehydrated -spot for CSF draw Posterior: -point of reference of head during childbirth Sphenoidal (anterolateral) and Mastoid (posterolateral) also exist |
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suture that divides the frontal lobe in infants
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Metopic suture
**also know intermaxillary |
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Area in the skull where four bones come together (name them) and making it vulnerable to fracture?
Area in the skull where three bones come together? |
Pterion (Front, Parietal, Temporal, Sphenoid) --> protects meningial artery
Asterion (occipital, parietal, temporal) |
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What is the route from the zygomatic arch / infratemporal fossa medially to the nasal cavity?
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Infratemporal fossa --> pterogymaxillary fissure --> pterygopalatine fossa --> sphenopalatine foramen --> nasal cavity
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Where the sagittal and coronal sutures meet
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Bregma
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Where the sagittal and lamboidal sutures meet
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Lambda
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Bone within the suture are called
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wormian bones
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the lamboidal suture is between what bones?
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occipital and parietal
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Connect intracranial venus sinuses with veins outside cranium (possible route for infection)
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Emissary veins
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canals within the spongy bone
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Diploic veins
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