Which is not true of Myelin?

a. Is a fatty membranous sheath

b. is formed by glial cells

c. influences the rate of conduction of the electrical signal down an axon

d. myelin covers all parts of the neuron: axon, cell body, and dendrites

e. none of the above

Which of the following is not true about axon transport?

a. it refers to the passage of materials from the cell body of a neuron to the axon terminals

b. it refers to the passage of meterials from axon terminals to the cell body of neuron

c. it refers to the transport of materials across the axonal membrane

d. it is especially important for maintaining the integrity of neurons with long axons

Which of the following is not true of glial cells?

a. they form the myelin for axons

b. neurons outnumber glial cells 10 to 1 in the nervous system

c. they deliver fuel molecules to neurons and remove the wast products of metabolism

d. they are important for the growth and development of the nervous system

e. they regulate the composition of the extracellular fluid in the CNS

The membrane potential of most neurons at rest is

a. equal to the equilibrium potential of potassium ion

b. equal to the equilibrium potential of sodium ion

c. slightly more negative than the equilibrium potential of potassium ion

d. slightly more positive than the equilibrium potential of potassium ion

e. both equal to the equilibrium potential of sodium ion and slightly more negative than the equilibrium potential of potassium ion

I can answer a lot of these for you but idk if it's allowed...?

 

most of the answers are on wikipedia though

Edited May 27, 201114 yr by Basi

Which is not true of Myelin?

a. Is a fatty membranous sheath

b. is formed by glial cells

c. influences the rate of conduction of the electrical signal down an axon

d. myelin covers all parts of the neuron: axon, cell body, and dendrites

e. none of the above

Which of the following is not true about axon transport?

a. it refers to the passage of materials from the cell body of a neuron to the axon terminals

b. it refers to the passage of meterials from axon terminals to the cell body of neuron

c. it refers to the transport of materials across the axonal membrane

d. it is especially important for maintaining the integrity of neurons with long axons

Which of the following is not true of glial cells?

a. they form the myelin for axons

b. neurons outnumber glial cells 10 to 1 in the nervous system

c. they deliver fuel molecules to neurons and remove the wast products of metabolism

d. they are important for the growth and development of the nervous system

e. they regulate the composition of the extracellular fluid in the CNS

The membrane potential of most neurons at rest is

a. equal to the equilibrium potential of potassium ion

b. equal to the equilibrium potential of sodium ion

c. slightly more negative than the equilibrium potential of potassium ion

d. slightly more positive than the equilibrium potential of potassium ion

e. both equal to the equilibrium potential of sodium ion and slightly more negative than the equilibrium potential of potassium ion

 

its against forum rules to answer this i guess. google it, you'll definitely get answers