Kin 223 Exam 5 Midterm Exam
Questions And All Correct Answers.
A neuron conducting a impulse from the stomach wall to the CNS would be classified as a(n) ________
neuron - Answer visceral sensory
A nerve - Answer is a cablelike bundle of parallel axons.
Which statement is consistent with the current understanding of neural tissue? - Answer Most neurons
formed in fetal development last a lifetime, but some brain region in adults can generate new neurons.
Which part of the neuron contains the nucleus? - Answer soma
The nervous system controls the activity of muscles and glands. Muscles and glands can generate
changes and are therefore called - Answer Effectors
Receptors are parts of the nervous system that allow it to - Answer collect information
Some viruses can infect the distal portion of a neuron and utilize transport processes within the neuron
to move the cell body. What type of transport helps the virus in this situation? - Answer Retrograde
transport
Based on function, the vast majority of neurons are - Answer interneurons
Of the two types of synapses, based on mode of communication, which is less common but allows faster
signal transmission? - Answer Electrical synapse
Which statement accurately compares the transmission speed of the different types of synapses? -
Answer Transmission at chemical synapses involves a brief synaptic delay, but electrical synapses are
faster
, Maintenance of appropriate ion concentrations (especially after nerve impulses that involve ion
diffusion) is primarily the job of - Answer sodium-potassium pumps
The most crucial factor determining the resting potential of a neuron is the diffusion of - Answer
potassium out of the cell through leak channels
When multiple presynaptic neurons release neurotransmitter at various locations onto the postsynaptic
neuron at the same time, this results in - Answer spatial summation
Chemically gated ion channels are mainly found in the ___ segment of a neuron. - Answer receptive
As a neuron's refractory period ends, its sodium channels are changing from - Answer their inactive
state to their resting state
Somatic motor neuron axons fall into the category of - Answer A fibers
Which of the following describes how a presynaptic neuron would communicate a strong signal to a
postsynaptic neuron? - Answer Increasing the frequency of its action potentials
The conductive segment of a neuron is its _____, a region that contains many ___ gated channels -
Answer axon: voltage-
Catecholamines are a subtype of ___________ neurotransmitter. - Answer monoamine
The slowest category of nerve fibers are the: - Answer C fibers, and they conduct impulses at 1 meter
per second.
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? - Answer Large diameter and
myelinated
The primary inhibitory neurotransmitter in the brain is - Answer GABA
Questions And All Correct Answers.
A neuron conducting a impulse from the stomach wall to the CNS would be classified as a(n) ________
neuron - Answer visceral sensory
A nerve - Answer is a cablelike bundle of parallel axons.
Which statement is consistent with the current understanding of neural tissue? - Answer Most neurons
formed in fetal development last a lifetime, but some brain region in adults can generate new neurons.
Which part of the neuron contains the nucleus? - Answer soma
The nervous system controls the activity of muscles and glands. Muscles and glands can generate
changes and are therefore called - Answer Effectors
Receptors are parts of the nervous system that allow it to - Answer collect information
Some viruses can infect the distal portion of a neuron and utilize transport processes within the neuron
to move the cell body. What type of transport helps the virus in this situation? - Answer Retrograde
transport
Based on function, the vast majority of neurons are - Answer interneurons
Of the two types of synapses, based on mode of communication, which is less common but allows faster
signal transmission? - Answer Electrical synapse
Which statement accurately compares the transmission speed of the different types of synapses? -
Answer Transmission at chemical synapses involves a brief synaptic delay, but electrical synapses are
faster
, Maintenance of appropriate ion concentrations (especially after nerve impulses that involve ion
diffusion) is primarily the job of - Answer sodium-potassium pumps
The most crucial factor determining the resting potential of a neuron is the diffusion of - Answer
potassium out of the cell through leak channels
When multiple presynaptic neurons release neurotransmitter at various locations onto the postsynaptic
neuron at the same time, this results in - Answer spatial summation
Chemically gated ion channels are mainly found in the ___ segment of a neuron. - Answer receptive
As a neuron's refractory period ends, its sodium channels are changing from - Answer their inactive
state to their resting state
Somatic motor neuron axons fall into the category of - Answer A fibers
Which of the following describes how a presynaptic neuron would communicate a strong signal to a
postsynaptic neuron? - Answer Increasing the frequency of its action potentials
The conductive segment of a neuron is its _____, a region that contains many ___ gated channels -
Answer axon: voltage-
Catecholamines are a subtype of ___________ neurotransmitter. - Answer monoamine
The slowest category of nerve fibers are the: - Answer C fibers, and they conduct impulses at 1 meter
per second.
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? - Answer Large diameter and
myelinated
The primary inhibitory neurotransmitter in the brain is - Answer GABA
