Exam 7: The Nervous System: Neurons and Synapses

What is present at the axon hillock that allows the production of action potentials?

Endogenous cannabinoids have effects similar to the active ingredient in

Electrical synapses are functionally linked by tight junctions.

What process occurs when glutamate-releasing presynaptic neurons stimulate postsynaptic release of endocannabinoids that acts as retrograde neurotransmitters?

What neurotransmitter is used by neurons with cell bodies in the raphe nuclei along the midline of the brainstem?

Cells become more negative during hyperpolarization.

Neurotransmitters

What medication acts by increasing the action of nitric oxide as a treatment for erectile dysfunction?

The period of time when Na⁺ channels are recovering from their inactive state and K⁺ channels are still open is the

Local anesthetics block conduction of action potentials in sensory neurons by

What type of receptors will bind ATP and adenosine?

At what region of the neuron are action potentials first produced?

Which of the following is NOT true of norepinephrine?

Which of the following is NOT a function of neurotrophins?

Ion channels that open in response to depolarization are called

What amino acid are dopamine,norepinephrine,and epinephrine derived from?

An EPSP is conducted decrementally to the axon hillock,where voltage-gated Na+ and K+ channels are opened to created an action potential in the axon.

Release of ACh at parasympathetic effectors is always stimulatory.

Regeneration of CNS axons may be prevented in part by inhibitory proteins in the membranes of the

Neurotransmitter release from synaptic vesicles is caused by Ca²⁺-synaptotagmin complex interruption of the SNARE complex.