basic of neuroanatomy Flashcards
(15 cards)
what is grey matter?
it consist of bodies of neurons
what is the function of grey matter
processing information and making decisions
what is white matter?
it is composed of axons
what is white matter function?
it transmits signals to other neurons or tissues and is responsible for processing and coordinating body’s activities.
why is is white?
because of the fatty myelin sheath covering many axons
CNS is composed of:
brain and spinal cord
function of CNS
responsible for many higher order functions
what is cortex?
Cortex: The cortex is the outermost layer of the brain and is responsible for many higher-order functions, such as thinking,
memory, and sensory processing.
cortex is made of:
grey matter
what is the nuclei
Nuclei are clusters of cell bodies within the CNS, often involved in specific functions. the basal ganglia is
a group of nuclei important for motor control. They are embedded grey matter surrounded by white matter.
what is the basal nuclei
Multiple pieces of gray natter are parts of deepest part of cerebral hemisphere that are called basal nuclei.
it is important for motor control.
what are tracts
Tracts: Tracts are bundles of axons that connect different regions of the CNS. They serve as communication pathways for information transmission. There are ascending and descending.
Fascicles and Pathways?.
Decussatio and Chiasma: These terms refer to locations where nerve fibers cross over from one side of the CNS to the
other. For instance, the optic chiasm is where some optic nerve fibers cross over, allowing us to have binocular vision.
These are smaller bundles or groupings of axons within tracts that have specific functions. For
instance, the corticospinal pathway is involved in motor control.
Decussatio and Chiasma: These terms refer to locations where nerve fibers cross over from one side of the CNS to the
other. For instance, the optic chiasm is where some optic nerve fibers cross over, allowing us to have binocular vision.
These are specific neural pathways with distinct functions. For example, the medial lemniscus
is involved in transmitting tactile and proprioceptive information.
Decussatio and Chiasma:
These terms refer to locations where nerve fibers cross over from one side of the CNS to the
other. For instance, the optic chiasm is where some optic nerve fibers cross over, allowing us to have binocular vision.
