Chapter 4: Parts Of Nervous System Flashcards
Column
A set of cells perpendicular to the surface of the cortex similarity
Tract “projection”
A set of axons within the central nervous system
Nerve
Motor
sensory
Nerve- to Axons in periphery
Motor- from brain to muscles and glands
Sensory- to the brain
Ganglion
A cluster of neuron cell bodies usually OUTSIDE the central nervous system
Dorsal root ganglia
Bipolar cell bodies of primary sensory neurons, enter dorsal spinal cord
Gyrus
A ridge on the surface of the brain
Sulcus
Fold or groove
Gyrus vs sulcus
Gurus- ridge
Sulcus- groove
Fissure
A long deep sulcus
Gray matter
Cell bodies
White matter
Axon tracts
(Bundle of neurons)
Tract- set of axons in the CNS
Lamina
Row or layer of cell bodies separated from other cells
Grey matter vs white matter
Grey matter- cluster of cells
White matter-cluster of neurons(tract)
Both- pathways for neurotransmitter
neural pathway that serves to connect relatively distant areas of the brain or nervous system is usually a bundle of neurons, known collectively as
White matter
Afferents
the axons that relay sensory information into the central nervous system (i.e. the brain and the spinal cord).