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63 Cards in this Set
- Front
- Back
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What is CNS?
page 369 |
Central Nervous System
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What is PNS?
page 369 |
Peripheral Nervous System
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What are the 2 subdivisions of the Nervous System?
page 369 |
CNS (Central Nervous System)
PNS (Peripheral Nervous System) |
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What organs comprise the CNS?
page 369 |
Brain
Spinal Cord |
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What organs comprise the PNS?
page 369 |
Spinal Nerves
Cranial Nerves |
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What organ can be referred to as the "House of Consciousness" or the "CPU" ?
page 369 |
Brain
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What organ can be referred to as the "House of Reflexes" or "Information Superhighway" ?
page 369 |
Spinal Cord
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How many pairs of Spinal Nerves are there?
page 369 |
31
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How many pairs of Cranial Nerves are there?
page 369 |
12
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Which nerve pathway handles sensory input?
A) Afferent B) Integration C) Efferent page 369 |
A) Afferent
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Which nerve pathway handles motor output?
A) Afferent B) Integration C) Efferent page 369 |
C) Efferent
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Integration, Coordination and Control are handled by
A) Central Nervous System B) Peripheral Nervous System page 370 |
A) Central Nervous
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Identify the 2 types of cells that make Nervous Tissue.
page 373 |
Neurons
Neuroglia |
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Neurons are
A) Conducting Cells B) Supporting Cells page 373 |
A) Conducting Cells
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Neuroglia are
A) Conducting Cells B) Supporting Cells page 373 |
B) Supporting Cells
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A "nerve" is
A) A single cell B) A bundle of neurons page 373 |
B) A bundle of neurons
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What occurs within the cell body of a neuron?
page 374 |
Integration and memory storage
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What is the function of the dendrites of a neuron?
page 374 |
Receiving electrochemical messages from other cells and transmitting them to the cell body.
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What is the function of the axon of a neuron?
page 375 |
Receive electrochemical messages from the cell body and transmit them to other cells (and tissues).
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To what types of tissues do axons transmit their electrochemical messages?
page 375 |
Connective
Epithelial Muscle Nervous |
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What is the term that describes when the axon of a neuron touches another tissue?
page 375 |
Innervate
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What are the 3 types of neurons?
page 376 |
Multipolar
Bipolar Unipolar |
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Where are multipolar neurons primarily found?
page 376 |
Brain and Neuromuscular junctions
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What is the most common type of neuron?
A) Multipolar B) Bipolar C) Unipolar page 376 |
A) Multipolar
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Which type of neuron has multiple dendrites?
page 376 |
Multipolar
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Where are bipolar neurons primarily found?
page 376 |
Sensory Organs
( eyes, ears, nose, mouth, skin, etc) |
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What type of neuron is capable of the fastest transmission speed?
page 376 |
Bipolar
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Which neuron can be identified with 1 dendrite, 1 axon and a cell body that is inline with the dendrite & axon?
page 376 |
Bipolar
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Which neuron can be identified with 1 dendrite, 1 axon and a cell body that is not inline with the dendrite & axon?
page 376 |
Unipolar
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Where are unipolar neurons primarily found?
page 376 |
Spinal Cord
Fascia Dermis & Hypodermis |
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Which transmits electrochemical signals the fastest?
A) Multipolar B) Bipolar C) Unipolar page 376 |
B) Bipolar
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What is the advantage of the slowed signal in unipolar neurons?
page 376 |
Ability to determine degrees of intensity of sensory input signals.
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Sensory Neurons are also known as
A) Afferent neurons B) Efferent Neurons C) Interneurons page 377 |
A) Afferent neurons
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Motor Neurons are also known as
A) Afferent neurons B) Efferent Neurons C) Interneurons page 377 |
B) Efferent Neurons
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Neurons responsible for integration, processing and storage of input signals are also known as
A) Afferent neurons B) Efferent Neurons C) Interneurons page 377 |
C) Interneurons
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Where are interneurons solely located?
A) CNS B) PNS C) Sensory Organs page 377 |
A) CNS
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Name the 5 types of Neuroglia cells
page 378 |
Ependymocytes
Astrocytes Oligodendrocytes Microglial cells Neurolemmocytes |
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For what are ependymocyctes responsible?
page 378 |
Circulate Cerebral Spinal Fluid
Facilitate exchanges between CSF and neural tissues. |
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For what are astrocytes responsible?
page 378 |
Creating a barrier between blood vessels and neural tissues (blood - brain barrier)
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For what are oligodendrocytes responsible?
page 378 |
Form the myelin sheaths for neurons of the CNS.
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For what are microglial responsible?
page 378 |
Assist in fighting infections.
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For what are neurolemmocytes responsible?
page 378 |
Form the myelin sheaths for neurons of the PNS.
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What are the 2 steps of neuron functioning?
page 379 |
1) Exitability
2) Conductivity |
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What is "Excitability" of a neuron?
page 379 |
Depolarizing the membrane.
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What is "Conductivity" of a neuron?
page 379 |
Propagating the membrane depolarization
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Describe the particles that exist outside the neuron membrane.
page 379 |
Positively charged Sodium (Na) ions
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Describe the particles that exist inside the neuron membrane.
page 379 |
Negatively charged Potassium (K) ions
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What is a Synapse?
page 380 |
The point of communication between a neuron and another tissue.
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What is the function of synaptic vesicles?
page 380 |
Carry neurotransmitters through the neuron
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What is the function of Receptor sites?
page 380 |
Receive neurotransmitters
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What are neurotransmitters?
page 380 |
Electrochemical messages
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What are the two types of neurotransmitters?
page 380 |
Excitatory
Inhibitory |
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What is the function of excitatory neurotransmitters?
page 380 |
Create an action in the body
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What is the function of inhibitory neurotransmitters?
page 380 |
Limit an action in the body
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What is the function of the myelin sheath?
page 381 |
Protects the neuron
Insulates the electrochemical messages |
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What color is a myelinated neuron?
page 381 |
White
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What color is an unmyelinated neuron?
page 381 |
Grey
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What is the outer covering of the myelin sheath called?
page 382 |
Neurilemma
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What is the Neurilemma?
page 382 |
The outer covering of the myelin sheath
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What is the gap between myelin sheaths called?
page 382 |
Nerve Fiber node (Node of Ranvier)
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What is the Nerve Fiber Node?
page 382` |
The gap between myelinated segments of an axon
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What is a single segment/section of a myelinated axon called?
page 382 |
Internode
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What is an Internode?
page 382 |
A single segment/section of myelinated axon
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