Flashcards: ch14-16 final

•cyclical stimulation of the circuit

•E.g., breathing rhythm

•cytoplasm within cell body

•free ribosomes and rough endoplasmic reticulum

neuron without axon

side branch of main axon

fine extensions at the end of the axon and its collaterals

expanded area at tip or arborization 

intermediate filament that form neurofibrils

astrocyte form this around capillary

without mylination, gap

the thin, outer membrane of neurolemmocyte

•between synaptic knobs and soma

•between synaptic knobs and dendrites

•between synaptic knobs and axon

•side branches off the main axon

An impulse “jumps” from one neurofibril node to another

Unmyelinated axons impulse travels along the entire length of the axon membrane

•thickened ectoderm that undergoes neurulation

•develops in plate; cells at margin become neural crest

Folds on either side of groove grow together forming hollow

•forms the central nervous system

form in locations where the two layers of the dura mater have separated:

Superior sagittal sinus:

2.Inferior sagittal sinus:

3.Transverse sinuses:

4.Occipital sinus:

helps coordinate walking

inferiorly from hypothalamus to attach to pituitary gland

•horizontal fold that separates cerebrum from cerebellum

third ventricle communicates with lateral ventricles

recognizes and comprehends spoken and written language

•Typically located in left hemisphere overlapping the parietal and temporal lobes

Association tracts within a lobe

Association tracts •different lobes of same hemisphere

•nucleus—involved in movement and muscle tone

•Composed of putamen and globus pallidus

consciousness and processing of multiple sensory stimuli

•that suspend and anchor the spinal cord laterally to the dura mater

White matter names

extend between the spinal nerves and the sympathetic trunk ganglia

Formed from the lateral cord, anterior division of the brachial plexus (bicep brachii)

•“Horse’s tail”—axons that extend inferiorly from spinal cord’s conus medullaris

•Thin strand of pia mater within cauda equina that attaches conus medullaris to coccyx

form anterior horns, lateral horns and anterior part of gray commissure

tapering inferior end of spinal cord

 form posterior horns and posterior part of gray commissure