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Nervous Calzada Diana p.2 (tissues (myelin sheath, node of ranvier,…
Nervous Calzada Diana p.2
Layers of Meninges
arachnoid: includes a network of fibers and collagen that are part of the suspension system that helps protects the brain and spinal cord from impact
Bone:They support the body structurally, protect our vital organs and allow us to move
periosteum:very thin membrame that covers many of the bones
dura mater: has several functions and layers
pia mater: protect the central nervous system by containing the cerebrospinal fluid
Major functions
Spinal cord: insitatio of reflexs from ventral hon and lateral horn gray matter
Nerves:fibers of sensory and motor neurons
brain:perception and processing of sensory stimuli
digestive tract:the enteric nervous system located in the digestive tract
gangalla:receptions of sensory stimuli by dorsal root and cranial gangalia
diseases associated with the brain
Parkinson disease
multiple sclerosis
epilepsy
alzheimer
cerebral palsy
motor neurone disease
Lobes
temporal lobe:recieves sensory into such as sound and speech from ear
occipital lobe: visual processing center
frontal lobe:controls important cognitive skills in human
Parential lobe: processes sensory information regarding locations of the body
tissues
myelin sheath
node of ranvier
nucleus
dendrite
cell body
axon
axon terminal
Coverings
archnoid
bone
skin
periosteum
dura mater
pia mater
Parts of the brain
Brain stem:acts as a relay center connecting the cerebrum and the cerebellum to spinal cord
cerebrum:largest part of the brain and is composed of the right and left hemisphere
diencephalon:region of the embryonic vertebrate neural tube
cerebellum:located under the cerebrum
Classification of neurons
Motor neurons:muscles or glands are called effectors
sensory neurons: detects changes within body and outside body parts
Anatomy of spinal cord
posterior spinal
spinal cord posterior roots
vertebral artery
posterior branches of spinal cord
cauda equima
thoracic nerves
lumbar nerves