Intro To NBB Flashcards
Focal Lesion
Infection, tumor, or injury that develops in a restricted area of neural tissue. Produces focal Neurological signs
Focal Neurological Signs
Loss of pain/temp on half of face
Can’t repeat a spoken word
Loss of vision in one eye.
DOES NOT INCLUDE: headache, tiredness, confusion, disorientation
Diffuse/General Lesions
Neurodegenerative diseases, psychiatric disorders, inflammatory disorders, infections, malnutrition, genetic disorders, compression of the brain.
Cells of the Nervous System (CNS vs PNS)
CNS: Brain and Spinal Cord
PNS: Cranial Nerves and Spinal Nerves
Afferents and Efferents
Afferents:Carry Sensory information from the periphery
Efferents: carry motor signal to skeletal and smooth muscle
Pseudounipolar Neuron
Single process off cell body but one acts as anatomical axon/physiologic dendrite
Bipolar Neuron
One dendrite comes in and one axon leaves the cell body
Multipolar Neuron
Multiple dendrites come into the cell body and then one axon leaves the cell body
Inter neurons
Any neurons that form connections within the CNS
Local interneurons
Connect to cells in the immediate region
Projection Interneurons
Project to more distant areas of the CNS
Decussation
Crossing the midline
White vs Grey Matter
White: axons (inside of brain, outside in spinal cord)
Grey: Cell Bodies and Synapses (outside in brain, inside in spinal cord)
Cluster of Nuclei
Nucleus or Ganglia
Clusters of Axons
Tract, Nerve, Fasciculus, funiculars, commissure
