Exam 7: The Nervous System: Neurons and Synapses

Neurotransmitter release can be inhibited by damaging the SNARE complex.

Ion channels that open in response to depolarization are called

Blocking ____________ channels would prevent neuron depolarization.

Synaptic plasticity involves structural changes in neurons such as

Synaptic vesicles are docked to the plasma membrane of the axon terminal by a protein complex called

Glial cells normally lose their mitotic ability prior to birth.

Conduction of an action potential in a myelinated axon is called

Once an EPSP is created on the postsynaptic neuron,a new action potential is produced down the axon.

The brain and spinal cord comprise the

Destruction of astrocytes would decrease the rate at which action potentials are transmitted.

Local anesthetics block conduction of action potentials in sensory neurons by

Sensory nerves cause muscle contraction.

The minimum depolarization needed to open Na⁺ gates is called the

The most abundant neuropeptide in the brain is

Which of the following is NOT true of axonal transport?

As the intensity of a stimulus increases,more axons will become activated.This process is called

Endogenous opioids transmit impulses of pain.

The nicotinic ACh receptor is a ligand-gated channel.

Excitotoxicity is caused by

Sensory neurons