1175 cards
Hyperpolarization occurs because K + channels are ____.
Hyperpolarization occurs because ____ are slow to close.
____ occurs because K + channels are slow to close.
The Na + / K + Pump moves Na + and K + in the following amounts and directions ____ the cell
The Na + / K + Pump moves Na + and K + in the following amounts and directions 3 into the cell
The cell membrane is ____ permeable to Na +
The cell membrane is highly permeable to ____
A/an ____ is a junction between two nerve cells
A/an synapse is a ____ between two nerve cells
At a chemical synapse, an action potential triggers the presynaptic neuron to release ____
At a chemical synapse, an action potential triggers the ____ to release neurotransmitters
At a chemical synapse, ____ triggers the presynaptic neuron to release neurotransmitters
____ enters the presynaptic cell and allows vesicles with neurotransmitters inside to fuse with the axon terminal membrane.
Ca 2+ enters the ____ and allows vesicles with neurotransmitters inside to fuse with the axon terminal membrane.
Ca 2+ enters the presynaptic cell and allows ____
A/an c____ommunicates using chemical messengers ( neurotransmitters ).
A/an chemical synapse communicates using ____.
Ca 2+ enter the presynaptic cell through ____ in the cell membrane.
Ca 2+ enter the ____ cell through voltage-gated calcium channels in the cell membrane.
An excitatory postsynaptic potential (EPSP) ____ the cell.
____ depolarizes the cell.
An inhibitory post-synaptic potential (IPSP) ____ the cell
____ hyperpolarizes the cell
Give 3 ways the signal in a synapse can be terminated : ____ out of cleft
Give 3 ways the signal in a synapse can be ____: Breakdown by enzymes Reuptake by presynaptic neuron Diffusion out of cleft
The cells in an electrical synapse are connected by ____.
The cells in ____ synapse are connected by gap junctions.
Electrical synapses are ____ than chemical synapses.
____ synapses.
____ are stored in synaptic vesicles and are released when Ca 2+ enters the axon terminal in response to an action potential
Neurotransmitters are stored in ____ and are released when Ca 2+ enters the axon terminal in response to an action potential
Neurotransmitters are stored in synaptic vesicles and are released when ____
The primary neurotransmitter at neuromuscular junctions is ____.
The primary neurotransmitter at ____ is Acetylcholine.
The main excitatory transmitter in the CNS is ____.
The main ____ transmitter in the CNS is Glutamate.
The main excitatory transmitter in the ____ is Glutamate.
The main inhibitory neurotransmitter in the brain is ____
The main ____ neurotransmitter in the brain is GABA
The main inhibitory neurotransmitter in the ____ is GABA
The main inhibitory neurotransmitter in the spinal cord is ____.
The main ____ neurotransmitter in the spinal cord is glycine.
The main inhibitory neurotransmitter in the ____ is glycine.
Ionotropic receptors operate via ____ neurotransmitter action.
____ receptors operate via direct neurotransmitter action.
Metabotropic receptors operate via ____ neurotransmitter action
____ receptors operate via indirect neurotransmitter action
____ surround neurons and provide support and insulation.
Glial cells ____.
____ form the blood-brain barrier.
Astrocytes form the ____.
____ form the barrier between cerebrospinal fluid and interstitial fluid of the CNS .
Ependymal cells form ____ .
____ digest waste in CNS.
Microglia ____
____ make myelin in PNS .
Schwann cells make ____ .
____ make myelin in CNS .
Oligodendrocytes make ____ .
Myelinated sheaths make up the ____ matter in the brain.