Zoology 523 Exam 1 ACTUAL UPDATED Questions and CORRECT Answers
C
Terms in this set (201)
What is a ganglion? A cluster of neurons
Is a brain necessary to transport neural signals? No just neurons
What is neurophysiology? the function of neurons. it's similar across neurons of every species
What does the Golgi stain do? stains a few neurons completely
What is the neuron doctrine? Neurons are all separate cells that communicate
TH: A specialized neuron is: D
A: suited to particular function
B: distinct from other neurons in its morphology
C: distinct from other neurons in its physiology
D: all of the above
What are neurites? axons and dendrites that project from the soma. they're specialized for
transmitting signals
What is in the soma of a neuron? nucleus, organelles (but some of these are in neurites too), and
transcription/translation
Where does transcription/translation occur in the The soma and translation can occur in the neurites
neuron?
What did Cajal's polarization of neurites bring to light? There are 2 types: axons and dendrites
, Describe dendrites and axons dendrites receive info from synapses and axons send info downstream to
synapses
What is a primary dendrite? One that connects to the soma
How many dendrites do neurons usually have and what They can have many and they're very branchy/arboreal
do they look like?
What is a collection of dendrites called? An arbor
What does proximal vs distal refer to on a neurite? proximal = closer to soma (thicker)
distal = further from soma (skinnier)
Dendrites can be spiny. Why do we care? Synapses may be on the spines or the shafts of dendrites
What are the advantages of spines on dendrites? The can afford compartmentalization, can be grown, and/or can be eliminated
How many axons does a neuron have? 1
What does an axon look like (compared to a dendrite)? Branches are at right angles. Less arboreal
What are branches of axons called? Its collaterals
What is white vs grey matter? White matter = inside brain = axons
Grey matter = cortex = somas
What is the axon initial segment? The proximal region of an axon.... attaches to the axon hillock (close to soma)
What is special the axon initial segment? It's where signals in axons are generated so it's covered in proteins to help
transduce the signals.
Describe axon terminals Swollen endings of axons called the bouton
What are boutons en passant? sites for NT release ALONG axon (not just at terminal)
What is a neuromuscular junction? A special synapse between a motor neuron and muscle
How do we ensure a reliable response in the muscles? By having a high density of receptors
TH: In a neuron, the soma B
A: includes the entire cell
B: is the only site of transcription
C: is the only site of translation
D: all of the above
C
Terms in this set (201)
What is a ganglion? A cluster of neurons
Is a brain necessary to transport neural signals? No just neurons
What is neurophysiology? the function of neurons. it's similar across neurons of every species
What does the Golgi stain do? stains a few neurons completely
What is the neuron doctrine? Neurons are all separate cells that communicate
TH: A specialized neuron is: D
A: suited to particular function
B: distinct from other neurons in its morphology
C: distinct from other neurons in its physiology
D: all of the above
What are neurites? axons and dendrites that project from the soma. they're specialized for
transmitting signals
What is in the soma of a neuron? nucleus, organelles (but some of these are in neurites too), and
transcription/translation
Where does transcription/translation occur in the The soma and translation can occur in the neurites
neuron?
What did Cajal's polarization of neurites bring to light? There are 2 types: axons and dendrites
, Describe dendrites and axons dendrites receive info from synapses and axons send info downstream to
synapses
What is a primary dendrite? One that connects to the soma
How many dendrites do neurons usually have and what They can have many and they're very branchy/arboreal
do they look like?
What is a collection of dendrites called? An arbor
What does proximal vs distal refer to on a neurite? proximal = closer to soma (thicker)
distal = further from soma (skinnier)
Dendrites can be spiny. Why do we care? Synapses may be on the spines or the shafts of dendrites
What are the advantages of spines on dendrites? The can afford compartmentalization, can be grown, and/or can be eliminated
How many axons does a neuron have? 1
What does an axon look like (compared to a dendrite)? Branches are at right angles. Less arboreal
What are branches of axons called? Its collaterals
What is white vs grey matter? White matter = inside brain = axons
Grey matter = cortex = somas
What is the axon initial segment? The proximal region of an axon.... attaches to the axon hillock (close to soma)
What is special the axon initial segment? It's where signals in axons are generated so it's covered in proteins to help
transduce the signals.
Describe axon terminals Swollen endings of axons called the bouton
What are boutons en passant? sites for NT release ALONG axon (not just at terminal)
What is a neuromuscular junction? A special synapse between a motor neuron and muscle
How do we ensure a reliable response in the muscles? By having a high density of receptors
TH: In a neuron, the soma B
A: includes the entire cell
B: is the only site of transcription
C: is the only site of translation
D: all of the above
