Bio 181 ASU Exam 3 with complete solutions T or F: Potassium ions are at high concentrations inside of cells, including neurons - ANSWER-True
The action potential is a result of: - ANSWER-the movement of ions
The post-synaptic cell can be: - ANSWER-in glands, muscle cells and neurons
Th resting potential of a neuron is - ANSWER--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 - ANSWER-false
T or F: Voltage gated ion channels open when a protein binds to the receptor -
ANSWER-false T or F: Excitatory synapses cause hyperpolarization of post-synaptic cells - ANSWER- false T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid - ANSWER-false In the motor end plate, the event that is the immediate trigger for exocytosis is - ANSWER-calcium ions T or F: Fast Neurons as described in lecture require cytoplasmic signal transduction to open an ion channel. - ANSWER-False
T or F: Only pre-synaptic neurons are coated with myelin. - ANSWER-False
T or F: When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end plate. - ANSWER-True
T or F: Receptors are made from membrane-bound polyribosomes. - ANSWER-True
The terminal web: - ANSWER-is a site of exocytosis
T or F: Excitatory synapses cause depolarization of the post-synaptic cell - ANSWER- True
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