Studying the Nervous System Part 1

Reorder the following

• Nodes of Ranvier

• Soma

• Axon Hillock

• Dendrite

• Myelin

Myelin sheaths in the CNS are provided by ___ whereas within the PNS, myelin is provided by ___.

• Oligodendrocytes and Schwann cells
• Ependymal cells and Astrocytes

• Neurons and Dendrites
• Astrocytes and Microglia
• Schwann cells and Oligodendrocytes

The phrase "the basic signaling unit of the nervous system are separate discrete cells with processes arising out of the cell body" best describes what theory?

• Neurotransmitter Concept
• Cellular Theory
• Neuron Doctrine
• Nervous Tissue Hypothesis
• Reticular Theory

The neuron doctrine was definitively proven by what technique?

• Light microscopy

• X-ray technique
• MRI imaging technique
• Electron microscopy

The region labeled as A represents ___ whereas B represents ___

• Divergence, Convergence

• Neurodivergence, Convergence

• Convergence,

  Neurodivergence

• Convergence, Divergence

Phagocytes of the CNS are referred to as:

• Glial cells

• Astrocytes
• Microglia

• Ependymal cells

• Oligodendrocytes

Match the following

• Fluorescent dye

• 
• Nissl stain

• 
• Cresyl violet

• 
• Golgi stain

• 

Tags

NGSS.HS-LS1-4

The phrase "Dense tangle of neuronal and glial processes that are synaptically dense, containing a relatively low number of cell bodies" would best describe what?

• White matter
• Afferent fibers

• Neuropil

• Efferent fibers

The region labeled as D would correspond to what?

• Interneurons

• Motor efferent flexor

• Sensory afferent fibers

• Motor efferent extensor

Genes for light-sensitive proteins are introduced into certain neurons to monitor and control their activity in response to light signals. This technique is referred to as:

• Optogenetics

• Optochemistry
• Neurogenetics
• Photogenetics