exam 4 trujillo Flashcards
1
Q
what is the structure do myelin sheaths form along?
A
axons
2
Q
where is the nucleus of a neuron found?
A
cell body
3
Q
order for a drug addiction
A
- Drug molecule prevents receptor endocytosis and causes overstimulation of the postsynaptic cell.
- CNS responds to increased firing by decreasing the number of drug receptors on the cell membrane.
- The synapse becomes less sensitive, and normal function can only continue in the presence of the drug.
4
Q
which neurotransmitter is released from a motor neuron at the neuromuscular junction?
A
acetylcholine
5
Q
“house keeping” tasks of the cell, including protein synthesis?
A
soma
6
Q
how is a resting neuron supposed to look
A
low chlorine, medium sodium and high potassium in the inside of the cell.
7
Q
which phylum lacks a network of nerves?
A
porifera- sponges
8
Q
whta diffuses across a synaptic cleft, presynaptic axon and postsynaptic cell?
A
neurotrasnmitter
9
Q
branched extensions at the end of a neuron
A
dendrites
10
Q
which nervous system is composed of the brain and the spinal chord
A
central nervous system
11
Q
A
