PRACTICE EXAM 2026 PREMIUM QUESTIONS
AND ACCURATE ANSWERS ONE HUNDRED
PERCENT CORRECT
◉ neural circuits.
Answer: signal-relaying network of interconnected neurons
◉ dendrite.
Answer: short, rootlike structure on the neuron cell body that
receives signals from other neruons
◉ axon.
Answer: extension on the neuron cell body that sends signals to
other neurons, muscles, and glands
◉ myelin.
Answer: white, fatty material that surrounds and insulates axon
◉ myelination.
Answer: myelin sheaths increase the efficiency of signal
transmission between nerve cells
, ◉ white matter.
Answer: brain tissue comprised of myelinated nerve pathways
◉ gray matter.
Answer: brain tissue comprised of the cell bodies of neurons and glia
◉ neurotransmitter.
Answer: any of a group of chemicals that help transmit messages
between neurons
◉ synapse.
Answer: tiny gap that exists between the axon of the sending neuron
and the dendrites of the receiving neuron
◉ reuptake.
Answer: the reabsorption of a neurotransmitter after an impulse has
been transmitted across the synapse
◉ enteric nervous system.
Answer: an independent neural system involved with digestion;
capable of signaling the brain regarding stress and other emotions