What does an action potential do? Check all that apply. (There are TWO correct answers) travels down the axon via ligand gated ion channels travels from the cell body to the axon terminals travels from the axon terminal to the cell body O varies in strength with higher amplitude action potentials releasing more neurotransmitter releases neurotransmitters into the synaptic cleft

Inhibitory postsynaptic potentials cause what type of change at the post-synaptic membrane? Hyperpolarization Depolarization Decreased threshold No change

Please explain this picture how you would an exam in detail. Thank you

An action potential Membrane potential (mV) -40 40 -65 II -80 0 -Overshoot Rising Falling phase phase III Voltage threshold Resting potential Undershoot 1 2 3 4 Time (ms) In the figure above, which arrow best represents the point where the voltage-gated sodium channels are inactivated and locked? OI ○ III O IV ○ II

Describe how neurons communicate. To do this you must address: resting membrane potential; graded potentials; IPSPs; EPSPs; the role of sodium, potassium and calcium; generation of an action potential; inotropic vs metabutropic receptors; why is an AP only one direction; how are neurotransmitters released; continuous vs saltatory conduction; spatial vs temporal summation.

A chemical synapse ALWAYS includes 1. axon terminal 2. presynaptic cell 3. synaptic cleft 4. postsynaptic cell 5. dendrite O 1,2,3,4 O 1,3,4 O 2,3,4 O 1,2,3,4,5

Researchers have designed a neuron that's unable to produce and release neurotransmitters. Can that neuron still have an action potential? Choose the answer with the correct answer and the correct reasoning. O No, action potentials need neurotransmitters to increase message speed O No, a neuron can't receive messages without its own neurotransmitters O No, a lack of neurotransmitters would leave a neuron unmyelinated O No, action potentials don't occur in the axon O Yes, action potentials don't require neurotransmitters:

(f) Parts of a Neuron A Axon (initial B segment) G H C D | Synapse: The region where an axon terminal communicates with its postsynaptic target cell E F Output signal 02019 Person Education, Inc. Use the list below to identify D in the figure. postsynaptic neuron, integration, cell body, axon, action potential, presynaptic axon terminal, myelin sheath, synaptic vesicle, dendrites, input signal, Node of Ranvier, postsynaptic dendrite, nucleus, integration, axon hillock, voltage gated channel Synaptic cleft J

2. Hi, I was wondering If I labeled the attached picture correctly. I would appreciate your help

During the action potential waveform, the voltage returns to the resting membrane potential at -70mV through the: closing of potassium channels. opening of chloride channels. O opening of sodium channels. opening of potassium channels.