Flashcards in Exam #1: Intro. Self Study Deck (44):
What are the five major subdivisions of the brain?
What is the telencephalon?
What is the diencephalon?
What is the mesencephalon?
- Crus cerebri
Tectum= superior & inferior colliculi
What is the metencephalon?
What is the myelencephalon?
What is the brainstem?
How do you know the difference between gray & white matter in the spinal cord?
Gray= central butterfly
White= what surrounds the butterfly
What is the difference between ventral & dorsal in the spinal cord?
Dorsal= toward the spinous processes
Ventral= toward the vertebral bodies
Dorsal= tips of the wings of the butterfly
Functionally, what is the difference between dorsal & ventral in the spinal cord?
What is contained in the ventral horn of the spinal cord?
Cell bodies of neurons involved in somatic motor function
What is contained in the lateral horn of the spinal cord?
Cell bodies of "preganglionic" neurons involved in the SNS & PNS
What is contained in the dorsal horn of the spinal cord?
Central processes of unipolar neurons of DRG
What is the difference between a protoplasmic astrocyte & a fibrous astrocyte?
Protoplasmic= gray matter
Fibrous= white matter
What is an ependymal cell?
Cells that form the simple cuboidal epithelium that lines the central canal of the spinal cord & ventricles of the brain
Generally, how does the organization of the autonomic nervous system differ from somatic?
Somatic= 1 neuron directly innervating tissue
Autonomic= 2 neurons (pre-synaptic & post-synaptic)
How does the organization of the SNS differ from the PNS?
SNS= short pre-synaptic & long post-synpatic
PNS= long pre-synaptic & short post-synpatic
Where are the cell bodies of the presynaptic SNS neurons located?
Lateral horn of T1-L2
Where are the cell bodies of the presynaptic PNS neurons located?
Brain (axons are cranial nerves III, VII, IX, & X)
Lateral horn of the sacral spinal cord (S2-4)
Arc-like, resembles a segment of a circle
A large bundle of ascending or descending nerve fibers composed of several "fasiculi"
- Also called a "funiculus"
Bundle of nerve fibers that runs horizontally
Periphery of a structure i.e. opposite of medulla
Sensory receptor providing information about the external environment to the CNS
A bundle of ascending or descending nerve fibers in the CNS
A long thin structure; an axon or collection of axon
Depression or pit
Also called a column, a large bundle of ascending or descending nerve fibers composed of several "fasiculi"
Structure with a spherical configuration
A sensory receptor that provides info to the CNS about the internal environment
A layer of specific material such as the layering of nerve cell bodies in the spinal cord
Term for the extensions of neurons i.e. a collective term for dendrites & axons
Complex of axons, dendrites, and processes of neuroglia that form a web-like network between nerve cell bodies of the gray matter
A collection of nerve cell bodies
A cover or lid
Massive collection of nerve fiber bundles that connect the cerebrum & cerebellum to the brainstem
Cell body of a neuron
Arrangement of nerve fibers that serve a specific region
A seam or midline structure
A bundle of ascending or descending nerve fibers within the CNS
What side of the body does the motor cortex control movement of?
What side of the body does the sensory cortex receive input from?