Week 2 Flashcards
Olfactory Placode
Olfactory epithelium
Lens Placode
Lens of the Eye
Trigeminal Placode
Trigeminal Ganglion
Otic Placode
Cochlear and Vestibular Nerves
Geniculate Placode
Geniculate ganglion and distal CN VII
Petrosal Placode
Inferior glossopharyngeal ganglion and distal CN IX
Nodose Placode
Nodose ganglion and distal CN X
Forebrain or Prosencephalon
Telencephalon —> Cerebrum
Forebrain or Prosencephalon
Diencephalon —> Thalamus, hypothalamus, epithalamus, retina
Midbrain
Mesencephalon —> Midbrain
Hindbrain or Rhombencephalon
Metencephalon —> pons and cerebellum
Hindbrain or Rhombencephalon
Myelencephalon —> Medulla
Alar Plates of Neural Tube
Dorsal and sensory
Basal Plates of Neural Tube
Ventral and motor
Direction of migration of cell bodies
Radial or tangential
Radial Cell Migration
From ventricles to pia surface
Tangential Cell Migration
Around ventricles, involves interneurons
Sunderland 1st Degree Injury
Neuropraxia
Sunderland 2nd Degree Injury
Damage to axon with intact connective tissue
Sunderland 3rd Degree Injury
Damage to axon and endoneurium
Sunderland 4th Degree Injury
Damage of axon, endoneurium, and perineurium
Sunderland 5th Degree Injury
Damage to axon and all connective tissue layers
Anterograde or Wallerian Degeneration
Impacts axon and away from the cell body
Retrograde Degeneration
Impacts axon towards the cell body
Rate of PNS Regeneration
1mm per day
Anterior Cerebral Artery
Medial frontal lobe and medial parietal lobe
Posterior cerebral artery
Inferior and medial temporal lobe, inferior and medial occipital lobe, posterior thalamus, cerebral peduncles
Middle Cerebral Artery
Lateral frontal lobe, lateral parietal lobe, lateral temporal lobe, lateral occipital lobe, Insula
Lenticulostriate Arteries
Basal ganglia, internal capsule, amygdala, anterior thalamus
Short and paramedian pontine branches of basilar artery
Crus cerebri, central pons
Long circumferential branches of basilar artery
Dorsolateral pons, superior cerebellar peduncle
Superior Cerebellar Artery
Superior dorsolateral pons, dorsal midbrain
Anterior Inferior Cerebellar Artery
Inferior Dorsolateral Pons
Posterior Inferior Cerebellar Artery
Superior dorsolateral medulla
Superior Cerebellar Artery
Superior dorsolateral pons, dorsal midbrain
Anterior Inferior Cerebellar Artery
Inferior Dorsolateral Pons
Posterior Inferior Cerebellar Artery
Superior dorsolateral medulla
Cortical Layer I
Molecular, cell processes
Cortical Layer II
External Granular, dense stellate cells and small pyramidal cells
Cortical Layer III
External Pyramidal, loose stellate cells and medium pyramidal cells
Cortical Layer IV
Internal Granular, dense stellate cells
Cortical Layer V
Internal Pyramidal, large pyramidal cells
Cortical Layer VI
Multiform, various sized pyramidal cells and loose stellate Cells
Cortical Layer II Function
To ipsilateral cortical areas
Cortical Layer III Function
To contralateral cortical areas
Cortical Layer IV Function
INPUT
Cortical Layer V Function
To striatum, brainstem, and spinal cord
Cortical Layer VI Function
To thalamus
Projection Bundles
Connect cortex with subcortical structures
Commissural Bundles
Connect contralateral cortical areas
Association Bundles
Connect ipsilateral cortical areas
Broadman Areas 1, 2, and 3
Primary Somatosensory Cortex
Broadman Area 4
Primary motor cortex
Broadman Area 5
Somatosensory association area
Broadman Area 6
Premotor cortex
Broadman Area 17
Primary Visual Cortex
Broadman Areas 18 and 19
Visual association cortex
Broadman area 41
Primary auditory cortex