BIO 30 NERVOUS SYSTEM UPDATED
ACTUAL QUESTIONS AND CORRECT
ANSWERS COMPLETE STUDY GUIDE
RESOURCE
●● PNS (peripheral nervous system)
Answer: the sensory and motor nerves that connect the CNS to the rest
of the body
●● Autonomic Nervous System
Answer: A subdivision of the peripheral nervous system. Controls
involuntary activity of involuntary muscles in internal organs and
glands.
●● Somatic Nervous System
Answer: A subdivision of the peripheral nervous system. Enables
voluntary actions to be undertaken due to its control of skeletal muscles.
●● Sympathetic Nervous System
Answer: the division of the autonomic nervous system that arouses the
body, mobilizing its energy in stressful situations. It is a quick response.
●● Parasympathetic Nervous System
,Answer: the division of the autonomic nervous system that calms the
body, conserving its energy. It also deals with hormone response. It is a
slow response.
●● Norepinephrine
Answer: A neurotransmitter released from sympathetic motor neurons.
●● Acetylcholine
Answer: neurotransmitter released from parasympathetic and somatic
motor nerves.
●● Dendrite
Answer: a short branched extension of a nerve cell, along which
impulses received from other cells at synapses are transmitted to the cell
body.
●● Cell Body
Answer: contains the major cell organelles. Acts as a bridge allowing
conduction of information between dendrites and axons.
●● Node of Ranvier
Answer: tiny spaces located between the areas of myelin. Impulses jump
from one node to the next increasing speed.
, ●● Axon Terminal (synaptic knob)
Answer: End of axon containing neurotransmitter chemicals that allow
conduction across the synapse.
●● Schwann Cell
Answer: insulating glial cell that wraps around the axon of a peripheral
neuron, creating a myelin sheath.
●● Myelin
Answer: a fatty substance that helps insulate neurons and speeds the
transmission of impulse transmissions.
●● Axon
Answer: a long thin extension of the cell body responsible for
conducting nerve impulses away from the cell body.
●● Nucleus
Answer: control center of the cell.
●● Neurilemma
Answer: additional membrane on myelinated neurons (living part of the
Schwann cell) coating the axon that promotes the regeneration of
damaged axons.
ACTUAL QUESTIONS AND CORRECT
ANSWERS COMPLETE STUDY GUIDE
RESOURCE
●● PNS (peripheral nervous system)
Answer: the sensory and motor nerves that connect the CNS to the rest
of the body
●● Autonomic Nervous System
Answer: A subdivision of the peripheral nervous system. Controls
involuntary activity of involuntary muscles in internal organs and
glands.
●● Somatic Nervous System
Answer: A subdivision of the peripheral nervous system. Enables
voluntary actions to be undertaken due to its control of skeletal muscles.
●● Sympathetic Nervous System
Answer: the division of the autonomic nervous system that arouses the
body, mobilizing its energy in stressful situations. It is a quick response.
●● Parasympathetic Nervous System
,Answer: the division of the autonomic nervous system that calms the
body, conserving its energy. It also deals with hormone response. It is a
slow response.
●● Norepinephrine
Answer: A neurotransmitter released from sympathetic motor neurons.
●● Acetylcholine
Answer: neurotransmitter released from parasympathetic and somatic
motor nerves.
●● Dendrite
Answer: a short branched extension of a nerve cell, along which
impulses received from other cells at synapses are transmitted to the cell
body.
●● Cell Body
Answer: contains the major cell organelles. Acts as a bridge allowing
conduction of information between dendrites and axons.
●● Node of Ranvier
Answer: tiny spaces located between the areas of myelin. Impulses jump
from one node to the next increasing speed.
, ●● Axon Terminal (synaptic knob)
Answer: End of axon containing neurotransmitter chemicals that allow
conduction across the synapse.
●● Schwann Cell
Answer: insulating glial cell that wraps around the axon of a peripheral
neuron, creating a myelin sheath.
●● Myelin
Answer: a fatty substance that helps insulate neurons and speeds the
transmission of impulse transmissions.
●● Axon
Answer: a long thin extension of the cell body responsible for
conducting nerve impulses away from the cell body.
●● Nucleus
Answer: control center of the cell.
●● Neurilemma
Answer: additional membrane on myelinated neurons (living part of the
Schwann cell) coating the axon that promotes the regeneration of
damaged axons.
