T1L4:Neural Tissues Flashcards
what are the differences between the PNS and CNS
CNS:
-Brain and spinal cord
- Information processing
- including reflexes and behaviour
PNS:
- Sensory detection
- motor detection
which embryonic layer does the NS come from
-the ectoderm
what is the difference between an afferent and efferent neuron
- afferent: : transmit
sensory information to
brain/spinal cord
efferent :: motor neurons transmitting information from brain to effector organ i.e. muscle
what is a ganglion
group of cell bodies outside the CNS
give examples of ganglions
- dorsal root ganglion
- sensory ganglion
describe the motor ganglion
autonomic
describe the parasympathetic ganglion
- smaller neurons
- eccentric nuclei
what is the equivalent of ganglia in the brain
- Nuclei/nucleus: In CNS groups of neurons called “nucleus”
go over slide 10:
Directions in human prefrontal cortex
- how was it
what is the significance of Brodmann areas
Each Brodmann area has a particular set of inputs and outputs.
Often a Brodmann area will have a function
what is Brodmann area 4 and 17
4: ~primary motor cortex
17: primary visual cortex
what is the CNS neuron
: nucleus within cell body and
extends one or more processes
what is a process of a neuron
-is the generic term for any outgrowth from the cell body of a neuron (e.g. a dendrite is a process, and also an axon is a process).
go over slide 12:labelling of a neuron
how was it
describe the function of the myelin sheath
Electrically Insulates.
increasing conduction velocity