when do neurotransmitters create an action potential?
A: When they move through the protein pores
B: When they fit into receptor sites
C: When they excite the pre-synatic membrane
D: When they are broken down in the synapse
Depolaization of neurons is directly caused by which change in the neuron?
A: Sodium/potassium pump
B: Sodium ions entering the cell
C: Return of membrane potential to -60mV
D: Opening of potassium gates
Which function is NOT controlled by somatic neurons?
A: Diaphram movement
B: Movement of the hand
C: Instrinsic control of the heart rate
D: Control of digestion
How do impulses traveling along the auditory nerve are get interpreted differently from those traveling along the optic never?
A: The type of impulse sent along each nerve is different in nature.
B: The intensity of the impulses is different, causing them to be interpreted differently.
C: The area of the cerebrum that the impulses are sent to interpret the impulses differently.
D: The frequency of impulses causes the brain to interpret them differently.
A drug causes an increase i the release of excitatory transmittor substances at a synapse. What is the overall affect?
A: An increase in the stimulation of postsynaptic membranes.
B: Depression
C: Prevents impulses from reaching the post synaptic membranes.
D: Inhibits the entrance of calcium ions at the presynaptic membranes.
Which is not DIRECTLY needed for neuron conduction?
A: Nucleus
B: Axons
C: Dentrites
D: Cell membranes
Thanks so much guys! =D
A: When they move through the protein pores
B: When they fit into receptor sites
C: When they excite the pre-synatic membrane
D: When they are broken down in the synapse
Depolaization of neurons is directly caused by which change in the neuron?
A: Sodium/potassium pump
B: Sodium ions entering the cell
C: Return of membrane potential to -60mV
D: Opening of potassium gates
Which function is NOT controlled by somatic neurons?
A: Diaphram movement
B: Movement of the hand
C: Instrinsic control of the heart rate
D: Control of digestion
How do impulses traveling along the auditory nerve are get interpreted differently from those traveling along the optic never?
A: The type of impulse sent along each nerve is different in nature.
B: The intensity of the impulses is different, causing them to be interpreted differently.
C: The area of the cerebrum that the impulses are sent to interpret the impulses differently.
D: The frequency of impulses causes the brain to interpret them differently.
A drug causes an increase i the release of excitatory transmittor substances at a synapse. What is the overall affect?
A: An increase in the stimulation of postsynaptic membranes.
B: Depression
C: Prevents impulses from reaching the post synaptic membranes.
D: Inhibits the entrance of calcium ions at the presynaptic membranes.
Which is not DIRECTLY needed for neuron conduction?
A: Nucleus
B: Axons
C: Dentrites
D: Cell membranes
Thanks so much guys! =D
-
b
b
c
c
a
a
neither dendrite or the nucleus are DIRECTLY needed for conduction
e.g. axo-axonic synapse
b
c
c
a
a
neither dendrite or the nucleus are DIRECTLY needed for conduction
e.g. axo-axonic synapse