Neuro Flashcards
Central Nervous System anatomy ?
Brain
Brainstem
Spinal cord
Peripheral Nervous System anatomy ?
12 pairs of cranial nerves
Peripheral nerves
Brain has 4 regions ?
Cerebrum
Diencephalon
Brainstem
Cerebellum
Brainstem anatomy ?
Connects upper part of brain with spinal cord
Midbrain, pons and medulla
Cerebellum anatomy ?
Coordinates movement
Helps body keep upright
Each cerebral hemisphere divided into lobes ?
Frontal
Parietal
Temporal
Occipital
Grey matter: _________ bodies form the cerebral cortex ( outer layer)
Neuronal cell
Grey matter: Basal ganglia ?
movement
Grey matter: Thalamus ?
processes sensory impulses and relays to cerebral cortex
Grey matter: Hypothalamus ?
homeostasis, endocrine system, emotions
“keep body at even keel”
White matter: Neuronal axons coated with ______
myelin
Myelin sheaths allow faster travel of impulse
**help impulses travel faster
Spinal Cord is a _______ for info to and from the brain
Conduit
Cervical vertebrae ?
C1-C8
Thoracic vertebrae ?
T1-T12
Lumbar vertebrae ?
L1-L5
Sacral vertebrae ?
S1-S5
Lumbar and sacral roots fan out ?
cauda equina
Spinal Nerves ?
20 pairs between brainstem and T12
voluntary movement
involuntary movement
Cauda Equina ?
starts at T12-L1 to coccyx
11 pairs of spinal nerves
PNS: cranial nerves ?
12 pairs
I-II: are fiber tracts emerging from the brain
III-XII: arise from diencephalon and brainstem
Peripheral Nervous Syste: PNS -
Spinal and peripheral
31 pairs attach to the spinal cord
PNS: Each nerve has ?
Anterior root
Posterior root
Posterior (dorsal) root ?
sensory fibers
Anterior (ventral) root ?
motor fibers