Collection of nerve cell bodies located in the PNS. Choose Collection of nerve cell bodies located in the CNS Choose The junction between a neuron and a second cell (either neuron or muscle or glandular cell) can be categorized as either electrical or chemical. Choose Type of synapse where cells have no space between them are physically connected, which allows for direct stimulation. Choose Gap junctions are an example of this type of synapse. Choose Type of synapse where cells have space (synaptic cleft) between them and use a neurotransmitter to cross the space. Choose
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Collection of nerve cell bodies located in the PNS: Ganglia Show more…
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A nerve cell is long and skinny; at the start of the nerve, there are many branches that connect the nerve to other nerve cells. These branches are called____? A) axon B) axon terminal C) dendrites D) myelin sheath A nerve cell fires (or is activated) causing the nerve cell to send a _______ down the length of the nerve and by releasing _____ into the space at the end of the nerve. A) dendrites, axons B) electrical signal, dendrites C) electrical signal, neurotransmitters D) neurotransmitters, electrical signal
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Sensory neurons follow which kind of pathway to the Central Nervous System? a. Afferent b. Efferent 2. A stimulus to a neuron initiates an action potential by a. opening a gated sodium (Na+) channel. b. closing a gated sodium (Na+) channel. 3. Depolarization of a neuron membrane occurs when a. gated sodium (Na+) channels open. b. gated potassium (K+) channels open. 4. Repolarization of a neuron membrane occurs when a. gated sodium (Na+) channels open. b. gated potassium (K+) channels open. 5. A neuron membrane is depolarized when a. sodium ions (Na+) rush out of the neuron. b. sodium ions (Na+) rush into the neuron. 6. A neuron membrane is repolarized when a. potassium ions (K+) rush out of the neuron. b. potassium ions (K+) rush into the neuron. 7. Vesicles containing neurotransmitter molecules fuse with the membrane of the pre-synaptic cell—and release the neurotransmitter into the synaptic cleft—when a. calcium ions (Ca++) are released into the pre-synaptic cell at the axon terminal. b. calcium ions (Ca++) leave the post-synaptic cell.
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