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102 Cards in this Set

  • Front
  • Back

plane that divides brain into R/L portions

sagittal

plane that divides brain into anterior and posterior sections

coronal

other names for a bundle of axons

tract


lemniscus


fasciculus


column


peduncle


capsule

bundle of axons in PNS called

peripheral nerve

group of cell bodies in PNS called

ganglie

groups of cell bodies in CNS called

nuclei

groups of cell bodies on surface of brain is called

cortex

groups of cell bodies deep in CNS are called

nuclei

connect only with other neurons

interneurons

functional unit of NS

neuron

non neuronal cells that provide service to neurons

glia

peripheral components of the somatic NS include

axons, sensory nerve endings, glial cells

peripheral components of autonomic system includes

entire neurons, sensory nerve endings, synapses, ganglia, and glia

all parts of nervous system encased in vertebral column

spinal region

axons attached to spinal cord are with in the vertebral column until they

exit intervertebral foramen

the spinal cord extends from___ to ____

foramen magnus to the conus medullaris ( l2/L3)


how many segments does the spinal cord have

31 with a pair of spinal nerves from each sement

nerves are connected to the spinal cord via

by dorsal and ventral roots

enlargement of dorsal root shows__________ which are

-dorsal root ganglia


- cell bodies of sensory neurons

spinal nerves are formed by

union of dorsal and ventral root

spinal nerve exits vertebral column via_______ and divides into________

- intervertebral foramen


- dorsal and ventral primary rami

what is shaped like an "H" and has ventral, dorsal, and lateral horns

a cross section of the spinal cord

horns contain

- cell bodies of motor neurons


- interneurons


- endings of sensory nerves

ventral column, lateral column, dorsal column are areas with in

the white matter of a cross section of spinal cord

brain stem contains

medulla, pons, mid-brain, cranial nerves

brain stem connects

spinal cord with cerebral region

many of these travel through the brain stem and other begin or end within the brain stem

fiber tracts

the brainstem contains groups of neurons which control

- equilibrium


- cardio vascular activity


- respiration


- other functions

what is equilibrium

sensations of head movement, orientation to vertical, postural adjustments

which structure is continuous with the spinal cord

medulla

oval bump on lateral surface of medulla

olive

pyramid

axons projecting from cerebral cortex to spinal cord, crosses mid line here (called decussation)

medulla has how many cranial nerves

4

what is superior to the medulla and anterior to the cerebellum

pons


the pons contains

tracts, nuclei, 4 cranial nerves

what is superior to the pons

mid brain

anteriorly the mid brain contains

2 cerebral peduncles with fibers descending from cerebral cortex

dorsally the mid brain contains

4 rounded bodies:


- 2 superior and 2 inferior colliculi


- 2 cranial nerves

what are colliculi important for

orientation to stimuli

how many pairs of cranial nerves

12

cranial nerves typically innervate what? and what is the exception


- head/neck/face


- vagus nerve which innervates abdominal and thoracic viscera and structures of the head and neck

some cranial nerves are purely _____ others are mostly ______ that respond to _______

- sensory


- motor/sensory


- movement

______ is connected to brain stem by large bundles of fibers called______

-cerebellum


- peduncles

structure and function of the cerebellum

- 2 large cerebellar hemispheres, and a midline vermis


- coordinate movement

cerebellar hemispheres are composed of

cortex and deep nuclei

the diencephalon is with in the

cerebrum

the diencephalon consists of

- thalamus


- hypothalamus


- epithalamus


- sub-thalamus

nuclei in center of cerebrum which relays info to cerebral cortex

thalamus

what type of info does the thalamus relay and what does it regulate

- emotional, some memory, and sensation ( touch, visual)


- regulates consciousness, arousal, attention

jobs of the hypothalamus

- body temp, metabolic rate, chemical compositions and eating


- growth/function of reproductive organs


-expression of emotion and defensive behavior


epithalamus contains

pineal gland

job of pineal gland

secretes melatonin


influences sleep/wakefulness cycles

subthalamus

part of the neural circuit controlling movement

the cerebral hemispheres surface structure

gyri ( elevations) and sulci ( grooves)

the_______ has 6 lobes

cerebral hemispheres

lobes of the cerebral hemisphere

- frontal


- parietal


- temporal


- occipital


- limbic


- insular

the central sulcus on the cerebral hemispheres divides

frontal and parietal lobes

the lateral sulcus of the cerebral hemispheres divides

temporal and frontal lobes

cerebral cortex is responsible for

- appreciating sensory info and creating motor movement


- verbal language and non verbal communication


- personality, intelligence, memory, reasoning

commissures are

bundles of axons that connect right and left hemispheres of the cerebrum and convey info between them

huge commissure

corpus callosum

a group of axons which projects from the cerebral cortex connecting cortical and sub-cortical structures

internal capsule

with in white of hemispheres are additional areas of gray known as

deep nuclei

the most important deep nuclei in cerebrum

basal ganglia

basal ganglia circuit helps to

control movement

limbic system is with in

cerebrum

greatest deep cerebral nuclei with in the limbic system is the

amygdala

the hippocampus is in what lobe and is included in what system

- temporal


- limbic

the limbic system is involved in

- emotions


- processing of some memory

regulates consciousness, arousal, attention

thalamus

cerebrospinal fluid fills______ then it _____ and finally _______

the ventricles then circulates on surface of CNS and then is reabsorbed into venous blood system

ventricles are

four continuous cavities within brain

the meningies are part of what system

cerebrospinal system

modified filtrate of plasma

cerebrospinal fluid

locations of ventricles

1st/2nd: paired lateral in cerebral hemspheres


3rd: slit in diencephalon


4th: posterior to pons and medulla and anterior to cerebellum ..and continues through medulla and spinal cord as central canal

CSF secreted by

choroid plexus with in ventricles

lateral ventricals are connected to the 3rd vent via

interventricular foramina

3rd and 4th ventricals connected by

cerebral aqueduct

dura mater

outer most layer, seen grossly, 2 projections that separate parts of the brain: falx cerebri and tentorium cerebellie

falx cerebri separates

cerebral hemispheres

tentorium cerebelli separates

cerebral hemisphere from cerebellum

can see grossly, middle meninges

arachnoid

innermost meninges, cant see grossly

pia

dura sinuses

within dura


return CSF and venous blood to jugular veins

CSF regulates_____and provides_____

- contents of extracellular fluid


- buoyancy to CNS

provide most of blood to cerebrum and divided into________

- 2 internal carotid arteries


- anterior and middle cerebral arteries

the middle cerebral artery supplies

lateral surface of cerebral hemispheres

supply blood to medulla and upper spinal cord

2 vertebral arteries

vertebral arteries join to form

basilar artery

basilar artery supplies

-pons and cerebellum

basilar artery divides to become

posterior cerebral arteries

posterior cerebral arteries supply

midbrain and interposterior cerebrum

anterior, middle, and posterior arteries form____ which is located on _____

- circle of willis


- inferior surface or cerebrum

venous blood from ______ drains into______ and then drains into ______

- cerebrum


- dural sinuses ( dura mater)


- jugular veins

categories of lesions

- focal


- multifocal


- diffuse

focal lesion

single location ( ie: tumor in spinal cord)

multifocal lesion

several, non symmetrical locations ( tumor that has metastasized)

diffuse lesion

affecting bilateral symmetrical structures ( Alzheimer's)

what do you need to know from a structured interview regarding the history section of a neurological evaluation

- speed of onset


- cause


-pattern of progression


- mental status

acute onset ( minutes to hours) usually indicates

vascular problems

sub-acute onset ( progressing to max symptoms and symptoms over several days) frequently indicates

inflammatory process

chronic onset ( gradual worsening for weeks or years) indicates

tumor or degenerative disease