Deeper nervous and endocrine system anatomy and physiology review beyond the general HESI A2 Anatomy and Physiology deck.
34 cards · basic cards · AI-written, checked twice. Edit anything.
- What produces the myelin sheath around axons in the CNS?
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Oligodendrocytes- What produces the myelin sheath around axons in the PNS?
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Schwann cells- The nodes of Ranvier are gaps in the myelin sheath that allow ____ conduction of nerve impulses.
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saltatory- How many sodium and potassium ions does the sodium-potassium pump exchange per cycle?
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3 sodium ions out, 2 potassium ions in- What is the threshold potential of a neuron?
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The minimum membrane voltage that must be reached to trigger an action potential- What is the refractory period of a neuron?
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The brief time after an action potential when the neuron cannot fire another one- Which neurotransmitter is released at the neuromuscular junction?
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Acetylcholine- What is the main inhibitory neurotransmitter in the CNS?
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GABA- What is the main excitatory neurotransmitter in the CNS?
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Glutamate- Which neurotransmitter is most associated with reward, motivation, and movement?
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Dopamine- Which neurotransmitter helps regulate mood, appetite, and sleep?
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Serotonin- Which neurotransmitter is released by sympathetic postganglionic neurons?
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Norepinephrine- Which glial cells help form the blood-brain barrier?
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Astrocytes- What is the function of the basal ganglia?
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Coordinate voluntary movement- What does the limbic system control?
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Emotion and memory
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