CNS and PNS overview pwrpt Flashcards
Telencephalon includes ….
Cerebral hemispheres
Diencephalon includes….
hypothalamus and thalamus
Mesencephalon includes…
midbrain
Metencephalon includes…
Pons and Cerebellum
Rhombencephalon includes..
Medulla
Five major subdivisions of the forebrain are
Frontal, parietal, occipital, Temporal, Limbic
Basal Ganglia important for what?
Smoothing out motor movements of the limbs and axial musculature during body movement.
What is the Thalamus involved in?
Relay center for all external sensory information being passed to the forebrain
Spinal cord ends at what level
T12 - L1 vertebrae
Gray matter located where in the spinal cord?
Centrally
White matter located where in the spinal cord
Peripherally
Corticospinal (Pyramidal) pathway is motor only
Know it in detail
Spinothalamic tract does what
Serves as a sensory pathway for pain and temperature
Know it in detail
Where would the cell body of this spinothalamic pathway lie…remember it is sensory.
And what would this cell body look like
Lies in Dorsal Root Ganglion
Pseudounipolar
Know these in detail
Posterior Dorsal Column is what
Sensory pathway that informs the brain of the position of body parts in space
The Autonomic nervous system is regulated by what>
Hypothalamus and Thalamus
Most of the neurons of the autonomic nervous system originate where
Hypothalamus and Thalamus
How many Cervical cord segments are there
8
How many cervical vertebrae are there?
7…there is one more cervical cord segment than cervical vertebra, this is because the cervical spinal cord segments start before the vertebrae and end below it.
Thoracic spinal cord contains how many segments
12
Lumbar spinal nerves
5
Sacral spinal nerves
5
8, 12, 5, 5
cervical, thoracic, lumbar, sacral
Autonomic nervous system is regulated by what areas of the brain
Hypothalamus and Thalamus
