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3298393

https://www.studystack.com/flashcard-3298393 Action Potential

1. What are the 3 stages of action potential? a. depolarization, repolarization and hyperpolarisation.
2. In what phase of action potential does the potassium ions channels open? b.Repolarization
3. During hyperpolarization, when no action potential is generated it's called:refractory period c. Refractory period
4. What are the 5 major Glia? d. 1. Astrocytes 2. Microglia 3. Ependymal cells 4. Oligodendrocytes 5. Schwann cell
5. What is the tiny bulge at the end of a terminal branch of a presynaptic neuron’s axon a. A synaptic cleft b. The plasma membrane of a postsynaptic neuron. c. A synaptic knob Answer: "C"- A synaptic knob
6. In summation of an action potential ,the sum that reaches the threshold potential, voltage-gated channels in the axon membrane open, pro-ducing an action potential is called : This phenomenon is called spatial summation. a. spatial summation. b. temporal summation. c. hillock summation. d. none of the above Answer: "A", spatialsummation
7. Neurons talk to one another are called Neurotransmitters
8. Fill in the blank . This transmitters: a. Class I Acetylcholine (ACh) b. Class II Amines Class c. III Amino acids Class d. IV Other small molecu ________ It is synthesized in neurons by combining an acetate (acetyl coenzyme A) with choline ____ synthesized from amino acid mole-cules, such as tyrosine, tryptophan, or histidine. Amines include the neurotransmitter, monoamine subc
9. The autonomic system is divided into what two divisions? The sympathetic division and the parasympathetic division.
10. It is called toward or near the trunk of the body, or near the point of origin of one of its parts. a. Anterior b. Medial c. Proximal d. Distal Answer " C"- Proximal
Created by: bebairie
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