Exam 12: Nervous System: Nervous Tissue

Arrival of an action potential at the synaptic knob results in

If there were no sodium leak channels,the resting membrane potential of a neuron would be

Negatively charged protein molecules are more prevalent within a neuron's cytosol than in the interstitial fluid.

Which is not characteristic of neurons

The glial cell that myelinates and insulates axons in the peripheral nervous system is the

Nerves and ganglia are structures found in the

A scientist observes a particular nerve fiber that is among the fastest at conducting action potentials in the body.Which of the following best describes its likely structure

The most crucial factor determining the resting potential of a neuron is the diffusion of

The type of neuronal circuit in which several neurons process the same information at one time is a _____________ circuit.

The type of neuronal circuit that ensures that we continue to breathe while asleep is a _____________ circuit.

Electrical synapses involve coupling of neurons by

The slowest category of nerve fibers are the

Imagine a genetic mutation that resulted in a malfunctioning inactivation gate in a voltage-gated sodium channel.The defective gate wouldn't always open and close when it should.What functional problems would this cause for the neurons

In a myelinated axon,the greatest concentration of voltage-gated ion channels is in the

Catecholamines are a subtype of __________ neurotransmitter.

The monoamine that has functions related to sleep,appetite,cognition,and mood is

Which choice correctly orders the connective tissue wrappings of a nerve,beginning at the outermost layer

Which is not a function of the motor division of the nervous system

The glial cell that provides structural support and organization to the CNS is the

A depolarization is when the inside of a neuron becomes _______________ the resting membrane potential.