GRCC BI 121 SPOs: Nervous System
(Answered) 153 Questions and Correct
Answers. 100% Verified | 2025/2026|
Central Nervous System (CNS)
brain and spinal cord
Peripheral Nervous System (PNS)
the sensory and motor neurons that connect the central nervous system (CNS) to the rest of the
body.
Neuron
a nerve cell; the basic building block of the nervous system
Glial cell
cells in the nervous system that support, nourish, and protect neurons
Axon
the extension of a neuron, ending in branching terminal fibers, through which messages pass to
other neurons or to muscles or glands
,synaptic terminal
A bulb at the end of an axon in which neurotransmitter molecules are stored and released.
collateral branch
branch off of an axon
dendrite
the bushy, branching extensions of a neuron that receive messages and conduct impulses toward
the cell body
Astrocytes
Provide structural and metabolic support for neurons.
Synaptic cleft
a gap into which neurotransmitters are released from the axon terminal
, Schwann cells
Supporting cells of the peripheral nervous system responsible for the formation of myelin.
Myelinated fiber
Neuron axon with a myelin sheath that conducts nerve impulses VERY RAPIDLY.
unipolar neuron
a neuron with one process extending from its cell body
bipolar neuron
a neuron with one axon and one dendrite attached to its soma
multipolar neuron
A neuron with a single axon and multiple dendrites; the most common type of neuron in the nervous
system.
sensory (afferent) neurons
neurons that carry incoming information from the sensory receptors to the brain and spinal cord
motor neurons (efferent)
neurons that carry outgoing information from the brain and spinal cord to the muscles and glands
association neurons (interneurons)
(Answered) 153 Questions and Correct
Answers. 100% Verified | 2025/2026|
Central Nervous System (CNS)
brain and spinal cord
Peripheral Nervous System (PNS)
the sensory and motor neurons that connect the central nervous system (CNS) to the rest of the
body.
Neuron
a nerve cell; the basic building block of the nervous system
Glial cell
cells in the nervous system that support, nourish, and protect neurons
Axon
the extension of a neuron, ending in branching terminal fibers, through which messages pass to
other neurons or to muscles or glands
,synaptic terminal
A bulb at the end of an axon in which neurotransmitter molecules are stored and released.
collateral branch
branch off of an axon
dendrite
the bushy, branching extensions of a neuron that receive messages and conduct impulses toward
the cell body
Astrocytes
Provide structural and metabolic support for neurons.
Synaptic cleft
a gap into which neurotransmitters are released from the axon terminal
, Schwann cells
Supporting cells of the peripheral nervous system responsible for the formation of myelin.
Myelinated fiber
Neuron axon with a myelin sheath that conducts nerve impulses VERY RAPIDLY.
unipolar neuron
a neuron with one process extending from its cell body
bipolar neuron
a neuron with one axon and one dendrite attached to its soma
multipolar neuron
A neuron with a single axon and multiple dendrites; the most common type of neuron in the nervous
system.
sensory (afferent) neurons
neurons that carry incoming information from the sensory receptors to the brain and spinal cord
motor neurons (efferent)
neurons that carry outgoing information from the brain and spinal cord to the muscles and glands
association neurons (interneurons)
