WorksheetsANAPHY LEC- NERVOUS SYSTEM
Total questions: 81
Worksheet time: 41mins
gathering information
Sensory Input
Integration
Motor output
To monitor changes occurring inside and outside the body
Sensory Input
Integration
Motor output
Changes = stimuli
Sensory Input
Integration
Motor output
To process and interpret sensory input and decide if action is needed
Sensory Input
Integration
Motor output
A response to integrated stimuli
Sensory Input
Integration
Motor output
The response activates muscles or glands
Sensory Input
Integration
Motor output
Brain and Spinal Cord
Central Nervous System (CNS)
Peripheral nervous system (PNS)
Integrative and control centers
Central Nervous System (CNS)
Peripheral nervous system (PNS)
Nerve outside the brain and spinal cord
Central Nervous System (CNS)
Peripheral nervous system (PNS)
cranial nerves and spinal nerves
Central Nervous System (CNS)
Peripheral nervous system (PNS)
communication lines between the CNS and the rest of the body
Central Nervous System (CNS)
Peripheral nervous system (PNS)
What are the FUNCTIONAL CLASSIFICATION OF THE PERIPHERAL NERVOUS SYSTEM?
Sensory (afferent) division
Motor (efferent) division
Nerve fibers that carry information to the central nervous system
Sensory (afferent) division
Motor (efferent) division
Somatic and visceral sensory nerve fibers
Sensory (afferent) division
Motor (efferent) division
Conducts impulses from receptors to the CNS
Sensory (afferent) division
Motor (efferent) division
Nerve fibers that carry impulses away from the central nervous system
Sensory (afferent) division
Motor (efferent) division
Motor nerve fibers
Sensory (afferent) division
Motor (efferent) division
Conducts impulses from the CNS to effectors (muscles and glands)
Sensory (afferent) division
Motor (efferent) division
What are the two subdivisions of motor (efferent) division?
Somatic nervous system
Autonomic nervous system
voluntary
Somatic nervous system
Autonomic nervous system
involuntary
Somatic nervous system
Autonomic nervous system
skeletal muscles
Somatic nervous system
Autonomic nervous system
cardiac and smooth muscle, glands
Somatic nervous system
Autonomic nervous system
NERVOUS TISSUE: SUPPORT CELLS
neurons
neuroglia
Abundant, star-shaped cells
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Brace neurons
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Form barrier between capillaries and neurons
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Control the chemical environment of the brain
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Spider-like phagocytes
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Dispose of debris
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Line cavities of the brain and spinal cord
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Circulate cerebrospinal fluid
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Produce myelin sheath around nerve fibers in the central nervous system
Astrocytes
Microglia
Ependymal cells
Oligodendrocytes
Satellite cells
Protect neuron cell bodies
Astrocytes
Schwann cells
Satellite cells
Form myelin sheath in the peripheral nervous system
Astrocytes
Schwann cells
Satellite cells
nerve cells
Neurons
Schwann cells
Satellite cells
Cells specialized to transmit messages
Neurons
Schwann cells
Satellite cells
What are the major regions of neurons?
Cell body
Processes
Neurofibrils
nucleus and metabolic center of the cell
Cell body
Processes
Neurofibrils
fibers that extend from the cell body
Cell body
Processes
Neurofibrils
Nissl substance
Cell body
Processes
Neurofibrils
specialized rough endoplasmic reticulum
Nissl substance
Processes
Neurofibrils
intermediate cytoskeleton that maintains cell shape
Nissl substance
Processes
Neurofibrils
specialized rough endoplasmic reticulum
Nissl substance
Processes
Neurofibrils
Nucleus and Large nucleus
Nissl substance
Cell body
Neurofibrils
conduct impulses toward the cell body
Dendrites
Axons
conduct impulses away from the cell body
Dendrites
Axons
end in axonal terminals
Dendrites
Axons
contain vesicles with neurotransmitters
Dendrites
Axons
Axonal terminals
are separated from the next neuron by a gap
Dendrites
Axons
Axonal terminals
end in axonal terminals
Dendrites
Axons
gap between adjacent neurons
Synaptic cleft
Synapse
junction between nerves
Synaptic cleft
Synapse
produce myelin sheaths in jelly-roll like fashion
Schwann cells
Nodes of Ranvier
gaps in myelin sheath along the axon
Schwann cells
Nodes of Ranvier
Most are found in the central nervous system
Neuron cell body
Neuron
cell bodies and unmyelinated fibers
Neuron cell body
Gray matter
Nuclei
collections of cell bodies outside the central nervous system
Ganglia
Gray matter
Nuclei
Carry impulses from the
sensory receptors
Sensory (afferent) neurons
Motor (efferent) neurons
Interneurons (association
neurons)
Cutaneous sense
organs
Sensory (afferent) neurons
Motor (efferent) neurons
Interneurons (association
neurons)
Proprioceptors - detect stretch or tension
Sensory (afferent) neurons
Motor (efferent) neurons
Interneurons (association
neurons)
Carry impulses from the
central nervous system
Sensory (afferent) neurons
Motor (efferent) neurons
Interneurons (association
neurons)
Found in neural pathways in
the central nervous system
Sensory (afferent) neurons
Motor (efferent) neurons
Interneurons (association
neurons)
Connect sensory and motor
neurons
Sensory (afferent) neurons
Motor (efferent) neurons
Interneurons (association
neurons)
many extensions from the cell body
Multipolar neurons
Bipolar neurons
Unipolar neurons
one axon and one dendrite
Multipolar neurons
Bipolar neurons
Unipolar neurons
have a short
single process leaving the cell body
Multipolar neurons
Bipolar neurons
Unipolar neurons
ability to respond to stimuli
Irritability
Conductivity
Depolarization
ability to transmit an impulse
Irritability
Conductivity
Depolarization
a stimulus depolarizes the neuron’s membrane
Irritability
Conductivity
Depolarization
The plasma membrane at rest is
polarized
true
false
rapid, predictable, and involuntary responses to stimuli
Reflex
Reflex arc
direct route from a sensory neuron, to an interneuron, to an effector
Reflex
Reflex arc
Smooth muscle regulation
Autonomic reflexes
Somatic reflexes
Heart and blood pressure regulation
Autonomic reflexes
Somatic reflexes
Regulation of glands
Autonomic reflexes
Somatic reflexes
Digestive system regulation
Autonomic reflexes
Somatic reflexes
Activation of skeletal muscles
Autonomic reflexes
Somatic reflexes
receives impulses from the body’s sensory receptors
Somatic sensory area
Primary motor area
Broca’s area
sends impulses to skeletal muscles
Somatic sensory area
Primary motor area
Broca’s area
involved in our ability to speak
Somatic sensory area
Primary motor area
Broca’s area
