NU551 UNIT 3 Purdue University Global | UPDATED Questions with
100% Verified Answers
Question:
Central Nervous System
Answer:
Consists of the brain and spinal cord, enclosed within protective cranial vault and
vertebrae
Question:
Different pathways in the peripheral nervous system?
Answer:
Afferent (ascending) - carry sensory impulses toward CNS
Efferent (descending) - innervate skeletal muscle or effector organs by transmitting
motor impulses away from CNS
Question:
Somatic Nervous System
Answer:
Pathways that regulate voluntary motor control
Question:
Autonomic Nervous System
Answer:
Regulation of the body's internal environment (viscera) through involuntary control of
organs
Further divided into sympathetic and parasympathetic
Question:
Two cells that constitute nervous tissue?
Answer:
Neurons
Nonneuronal neuroglial cells
,Question:
Neuron
Answer:
primary cell of the nervous system
electrically excitable cell and transmits and receives information
Question:
Neurological Cells
Answer:
provide structural support, protection, and nutrition for neurons
facilitate neurotransmission
Question:
3 parts of a neuron
Answer:
cell body, dendrites, axon
Question:
Cell Body
Answer:
•Mostly located in the CNS
•Cell bodies in the PNS are found in groups called ganglia
Question:
Ganglia
Answer:
Clusters of cell bodies in the PNS
Question:
Dendrites
Answer:
Extensions that carry nerve impulses toward the cell body
, Question:
Axons
Answer:
long conductive projections that carry nerve impulses away from the cell body
Question:
Axon Hillock
Answer:
Cone shaped region of an axon where it joins the cell body.
Question:
Myelin Sheath
Answer:
Membrane made of a lipid material called myelin
May wrap around the axon
Question:
Nodes of Ranvier
Answer:
Gaps in the myelin sheath to which voltage-gated sodium channels are confined.
Question:
Myelin
Answer:
Produced by Schwann Cells
Nutrient exchange is not possible through myelin sheath\
Acts as an insulator that allows an action potential to leap between segments rather than
flowing along the entire length of the membrane
Question:
Disorders of the myelin sheath
Answer:
100% Verified Answers
Question:
Central Nervous System
Answer:
Consists of the brain and spinal cord, enclosed within protective cranial vault and
vertebrae
Question:
Different pathways in the peripheral nervous system?
Answer:
Afferent (ascending) - carry sensory impulses toward CNS
Efferent (descending) - innervate skeletal muscle or effector organs by transmitting
motor impulses away from CNS
Question:
Somatic Nervous System
Answer:
Pathways that regulate voluntary motor control
Question:
Autonomic Nervous System
Answer:
Regulation of the body's internal environment (viscera) through involuntary control of
organs
Further divided into sympathetic and parasympathetic
Question:
Two cells that constitute nervous tissue?
Answer:
Neurons
Nonneuronal neuroglial cells
,Question:
Neuron
Answer:
primary cell of the nervous system
electrically excitable cell and transmits and receives information
Question:
Neurological Cells
Answer:
provide structural support, protection, and nutrition for neurons
facilitate neurotransmission
Question:
3 parts of a neuron
Answer:
cell body, dendrites, axon
Question:
Cell Body
Answer:
•Mostly located in the CNS
•Cell bodies in the PNS are found in groups called ganglia
Question:
Ganglia
Answer:
Clusters of cell bodies in the PNS
Question:
Dendrites
Answer:
Extensions that carry nerve impulses toward the cell body
, Question:
Axons
Answer:
long conductive projections that carry nerve impulses away from the cell body
Question:
Axon Hillock
Answer:
Cone shaped region of an axon where it joins the cell body.
Question:
Myelin Sheath
Answer:
Membrane made of a lipid material called myelin
May wrap around the axon
Question:
Nodes of Ranvier
Answer:
Gaps in the myelin sheath to which voltage-gated sodium channels are confined.
Question:
Myelin
Answer:
Produced by Schwann Cells
Nutrient exchange is not possible through myelin sheath\
Acts as an insulator that allows an action potential to leap between segments rather than
flowing along the entire length of the membrane
Question:
Disorders of the myelin sheath
Answer:
