Bio 181 ASU exam 3 latest update

Bio 181 ASU exam 3 latest update
2024-2025


T or F: Potassium ions are at high concentrations inside of cells, including neurons.

True




The action potential is the result of:

the movement of ions




The postsynaptic cell can be:

in glands, muscle cells, and neurons




Th resting potential of a neuron is

-60mV




T or F: The cell body refers to the part of the neurons that begin at the dendrites and extend to the axon
terminal.

false




T or F: Voltage gated ion channels open with the binding of a protein to the receptor.

False

, T or F: Excitatory synapses hyperpolarize postsynaptic cells

false




T or F: Acetylcholinesterase splits acetylcholine to muscarinic acid

false




With regard to the motor end plate the immediate event which triggers exocytosis is

calcium ions




T or F: Fast Neurons as described in lecture require cytoplasmic signal transduction to open an ion
channel.

False




T or F: Myelin coats only pre-synaptic neurons.

False




T or F When the presynaptic cell connects to a muscle cell the synapse area is called a motor end plate.

True




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