E3: end of Ch8/Ch 9 Flashcards
sensory receptors respond to a ___
ligand
sound is an example of a ___ receptor
mechanical
touch sensitivity can detect even a __ degree celsius temperature difference
1
___ receptors: example is pain. this is slow pain
tonic
__ pain is to get you to remove from the pain source. __ pain is the pain that follows
fast, slow
___ receptors have unchanging input signals. They stop sending the signal, and only start sending input signals again when the stimulus changes. example: pressure, smell
Phasic
there are at least 2-3x more modalities in ___ than in taste
smell
olfactory receptors are ___ receptors
chemo
if a neuron is injured in the axonal part, it can ___. though rather unusual
regrow
neuronal growth is finished by around __ years of age
6
bi-lateral symmetry and ____- brain size allows for more ___ organisms.
mid-brain, complex
ectoderm becomes __ and ___
skin and nerves
mesoderm becomes ___
muscle
neural plate forms a neural groove that eventually forms a neural tube. eventually becomes the __ ___ system
central nervous
endoderm becomes the ___ ___
internal structures
__ - becomes cerebrum
__ - stays the same
__ - becomes medulla and cerebellum and pons
forebrain, midbrain, hindbrain
___ tracts carry sensory information to the brain
ascending
white matter is primarily myelinated ___
axons
myelinated axons are ___ surrounding.
fat
fat is ____, non-conductive insulator
non-polar
___ tracts carry commands to motor neurons
descending
gray matter is cell bodies and ___. signals either begin here or are ___
dendrites, transfered.
white matter has axons carrying information ___ the brain
towards
____ center is the convergence point between an incoming stimulus and the external command to muscles and glands
integrating