week 3 Flashcards
all spinal nerves distal to ramus communicans contain what
GSA and GP
GSE
GVE postganglionic sympathetic
each pair of spinal nerves is from ____ spinal cord segment(s)
1
early during fetal development, where does each cord segment lie
within same vertebra
with growth, what happens to the size of the vertebral column relative to the spinal cord
the vertebral column outgrows the spinal cord
in what vertebra do the cord segments C1 and C2 reside
in C1 vertebra
in what vertebra do the cord segments C3 to T11 reside
in vertebra one number less (ie T2 lies in T1)
in what vertebra do the cord segments T12-L2 reside
in corresponding vertebra (ie L1 resides in L1 vertebra)
in what vertebra do the cord segments L3, L4 reside
in L3 vertebra
in what vertebra do the cord segments L5,6,7 reside
in L4 vertebra
in what vertebra do the cord segments S1,2,3 reside
in L5 vertebra
in what vertebra do the cord segments Cd1-5 reside
in L6 vertebra
in what vertebra does the spinal cord end?
in L6 vertebra
cervical spinal nerves arise ______ (in front or behind) vertebra of same number
in front of
After cervical vertebra, T1 to Cd5 spinal nerves emerge ______ vertebra of same number
behind
can you assess all 36 spinal cord segments
no
in young dogs, what is the location of the spinal cord
it extends further caudally in the vertebral column because the dogs have not finished growing
where does a feline cord segment end
~S2
where does the horse/cattle spinal cord segment end
~S1
Where are GSE LMN found?
in ALL cord segements of spinal nerves and in the brain
of the 5 localization areas of the spinal cord segments, what areas show no LMN signs when damaged (no reflexes, no atrophy)
C1 to C5; and T3 to L3.
if an animal shows 1 umn sign, where is a lesin for sure?
in the CNS
cn1 is located in what part of the brain
forebrain
oflactory bulbs occupy ____ of the skull
rostral brain case
name the parts on the brain
2
what carries conscius smell in the brain
lateral olfactory tract
the lateral oflactory tract lies within the
oflactory peduncle
CN III resides in what part of the brain
midbrain
where does crossover occur?
optic chiasm
where are the cell bodeis of GSE LMN and GVE LMN of the CN III
in the midbrain (can damage centrally or peripherally)
medial olfactory tract6-12
carries info to ventral portion of hypothalamus for involuntary reflexes salivation after smelling food)
what CN are in the medulla oblongata
CN 6-12
?Of CN 6-12, which have LMN
CN 6, 7, 9, 10, 11, 12
