NEU221 Final Exam Study Guide Overview with all Correct &
100% Verified Answers| Latest Update| Already Graded A+
1. Soma,
the neuron consists of
dendrites, and
axon
2. soma contains 5 organelles (Nucleus, rough ER, smooth ER, golgi apparatus,
and
mitochondria)
3. dendrites - function as an antennae
-covered with thousands of synapses
-have polyribosomes that direct local protein synthesis
4. axon - structure found only in the nucleus
-highly specialized for the transfer of information over distances in the
nervous system
-no rough ER
-very few free ribosomes
-no protein synthesis
5. axons - all proteins originate in the axon
-have voltage-gated channels along length to allow signals to propagate
6. axon terminals - have mitochondria, voltage-gated Ca2+ channels, synaptic vesicles, an
se-
cretory granules
-can be myelinated, which increases speed of transmission
7. Potassium (K+) - Higher inside neuron - would flow out of the cell if channel was opene
-flow would hyperpolarize the membrane
8. Sodium (Na+) - Higher outside neuron
-flow into the cell
-flow would depolarize the membrane
9. Chloride (Cl-)
, NEU221 Final Exam Study Guide Overview with all Correct &
100% Verified Answers| Latest Update| Already Graded A+
-Higher outside neuron
-flow into the cell
-flow would hyperpolarize the membrane
10. Calcium (Ca2+) - Higher outside neuron
-flow into the cell
-flow would depolarize the membrane
11. diffusion and What forces drive ion force?
elec- tricity
12. Diffusion Non charged ions are pushed through channels in membrane
13. Electricity Ions are electricity charged molecules
14. Equilibrium -The membrane potential at which the electrical force driving an ion is
poten- tial exactly balanced by the concentration force
-no net movement of that ion, even if there are channels open for
15. - permeability that ion How is equilibrium potential relevant to membrane
- number of
open channels potential?
16. potassium Which ion is most permeable at rest?
17. Membrane The voltage ditterence across a cell membrane
poten- tial
18. -65 mV What is the numerical value of a typical neuronal resting membrane
potential?
19. Potassium What type of channel is responsible for the negative resting membrane
leak channel poten- tial?
20. -80 mV Equilibrium potential of K+?
, NEU221 Final Exam Study Guide Overview with all Correct &
100% Verified Answers| Latest Update| Already Graded A+
100% Verified Answers| Latest Update| Already Graded A+
1. Soma,
the neuron consists of
dendrites, and
axon
2. soma contains 5 organelles (Nucleus, rough ER, smooth ER, golgi apparatus,
and
mitochondria)
3. dendrites - function as an antennae
-covered with thousands of synapses
-have polyribosomes that direct local protein synthesis
4. axon - structure found only in the nucleus
-highly specialized for the transfer of information over distances in the
nervous system
-no rough ER
-very few free ribosomes
-no protein synthesis
5. axons - all proteins originate in the axon
-have voltage-gated channels along length to allow signals to propagate
6. axon terminals - have mitochondria, voltage-gated Ca2+ channels, synaptic vesicles, an
se-
cretory granules
-can be myelinated, which increases speed of transmission
7. Potassium (K+) - Higher inside neuron - would flow out of the cell if channel was opene
-flow would hyperpolarize the membrane
8. Sodium (Na+) - Higher outside neuron
-flow into the cell
-flow would depolarize the membrane
9. Chloride (Cl-)
, NEU221 Final Exam Study Guide Overview with all Correct &
100% Verified Answers| Latest Update| Already Graded A+
-Higher outside neuron
-flow into the cell
-flow would hyperpolarize the membrane
10. Calcium (Ca2+) - Higher outside neuron
-flow into the cell
-flow would depolarize the membrane
11. diffusion and What forces drive ion force?
elec- tricity
12. Diffusion Non charged ions are pushed through channels in membrane
13. Electricity Ions are electricity charged molecules
14. Equilibrium -The membrane potential at which the electrical force driving an ion is
poten- tial exactly balanced by the concentration force
-no net movement of that ion, even if there are channels open for
15. - permeability that ion How is equilibrium potential relevant to membrane
- number of
open channels potential?
16. potassium Which ion is most permeable at rest?
17. Membrane The voltage ditterence across a cell membrane
poten- tial
18. -65 mV What is the numerical value of a typical neuronal resting membrane
potential?
19. Potassium What type of channel is responsible for the negative resting membrane
leak channel poten- tial?
20. -80 mV Equilibrium potential of K+?
, NEU221 Final Exam Study Guide Overview with all Correct &
100% Verified Answers| Latest Update| Already Graded A+
