Please enable JavaScript.
Coggle requires JavaScript to display documents.
Somatic Nervous System (Spinal cord (dermatomes (body segments) (consist…
Somatic Nervous System
Brain
controls
cranial nerves
afferent functions
send sensory input from the head to the brain
efferent functions
control movement of head and face
Some fulfill both sensory and motor functions
some are maintainance of autonomic functions
cranial nerves connect brain and internal organs
cranial nerves influence certain autonomic responses, like salivation
sensory input from head
Spinal cord
controls
spinal nerves
located in the spinal column
spinal column consists of vertebrae
cervecal
thoracic
lumbar
sacral
coccygeal
sensory input from body
dermatomes (body segments)
Correspond to spinal cord segments
consist of both sensory and motor nerves
Sensory to send input from segment to brain
Motor to control movement of that segment
two-sided (bilateral)
means that one brain-side mirrors the other
functions in such a way that the left hemisphere is responsible for the left side of the body and vice versa
The law of Bell and Magendie
dorsal (posterior) part of spinal cord is sensory
fibers are afferent
carry sensory information in
ventral (anteror) part of spinal cord is motor
fibers are efferent
carry motor information to muscles