Podcast
Questions and Answers
Which Brodmann area is associated with the premotor area?
Which Brodmann area is associated with the premotor area?
Damage to Broca's area, typically located in the left hemisphere, can result in which condition?
Damage to Broca's area, typically located in the left hemisphere, can result in which condition?
Which of the following functions is NOT typically associated with the prefrontal area?
Which of the following functions is NOT typically associated with the prefrontal area?
What is the primary function of astrocytes within the central nervous system (CNS)?
What is the primary function of astrocytes within the central nervous system (CNS)?
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The primary motor area exhibits somatotopic organization, often represented by a:
The primary motor area exhibits somatotopic organization, often represented by a:
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In what lobe of the brain would you find the somatic sensory input areas?
In what lobe of the brain would you find the somatic sensory input areas?
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Which type of glial cell is responsible for myelin production in the peripheral nervous system (PNS)?
Which type of glial cell is responsible for myelin production in the peripheral nervous system (PNS)?
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Which cells phagocytize the remnants of the axon terminal after injury?
Which cells phagocytize the remnants of the axon terminal after injury?
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Approximately how long after injury do new terminal sprouts project from the proximal segment of an axon?
Approximately how long after injury do new terminal sprouts project from the proximal segment of an axon?
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Where is the area responsible for processing auditory information located?
Where is the area responsible for processing auditory information located?
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What is the role of microglia in the central nervous system (CNS)?
What is the role of microglia in the central nervous system (CNS)?
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What is the approximate rate of nerve regeneration in the PNS?
What is the approximate rate of nerve regeneration in the PNS?
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What is the function of ependymal cells in the central nervous system (CNS)?
What is the function of ependymal cells in the central nervous system (CNS)?
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Damage to the primary motor area results in contralateral control deficits. What does 'contralateral control' mean?
Damage to the primary motor area results in contralateral control deficits. What does 'contralateral control' mean?
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What is one of the main reasons for limited axon regeneration within the CNS in comparison to the PNS?
What is one of the main reasons for limited axon regeneration within the CNS in comparison to the PNS?
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Which specific area is responsible for controlling eye movement in the frontal lobe?
Which specific area is responsible for controlling eye movement in the frontal lobe?
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Mature neurons in the central nervous system (CNS) respond to injury in what way?
Mature neurons in the central nervous system (CNS) respond to injury in what way?
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Which change occurs in the axon terminal during Wallerian degeneration?
Which change occurs in the axon terminal during Wallerian degeneration?
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Which type of nerve injury typically allows for more complete recovery?
Which type of nerve injury typically allows for more complete recovery?
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Why do peripheral nerves injured close to the spinal cord recover poorly and slowly?
Why do peripheral nerves injured close to the spinal cord recover poorly and slowly?
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During axonal reaction, what is the fate of Nissl bodies within the cell body?
During axonal reaction, what is the fate of Nissl bodies within the cell body?
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What is the direction of conduction for afferent nerve fibers?
What is the direction of conduction for afferent nerve fibers?
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What is the main function of the olfactory nerve?
What is the main function of the olfactory nerve?
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What forms a column or tube, enclosed by the original basal lamina of the endoneurium?
What forms a column or tube, enclosed by the original basal lamina of the endoneurium?
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Which structure synthesizes dopamine in the midbrain?
Which structure synthesizes dopamine in the midbrain?
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Dysfunction of dopaminergic neurons in the substantia nigra is associated with which of the following diseases?
Dysfunction of dopaminergic neurons in the substantia nigra is associated with which of the following diseases?
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The cerebral aqueduct connects which ventricles?
The cerebral aqueduct connects which ventricles?
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Obstruction of the cerebral aqueduct can commonly cause which condition?
Obstruction of the cerebral aqueduct can commonly cause which condition?
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Which of the following is a primary function of the cerebellum?
Which of the following is a primary function of the cerebellum?
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Damage to the cerebellum typically affects motor coordination on which side of the body?
Damage to the cerebellum typically affects motor coordination on which side of the body?
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Which of the following structures transmits information from the cerebellum to the brainstem?
Which of the following structures transmits information from the cerebellum to the brainstem?
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Which cranial nerves have nuclei located within the pons?
Which cranial nerves have nuclei located within the pons?
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What can result from damage to the midbrain?
What can result from damage to the midbrain?
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Which cranial nerve dysfunction is associated with strabismus?
Which cranial nerve dysfunction is associated with strabismus?
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Which part of the midbrain is primarily responsible for visual motor movements?
Which part of the midbrain is primarily responsible for visual motor movements?
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What area of the brain is primarily associated with processing visual information?
What area of the brain is primarily associated with processing visual information?
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Which condition might be a symptom of midbrain dysfunction?
Which condition might be a symptom of midbrain dysfunction?
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What cognitive functions are encompassed by awareness?
What cognitive functions are encompassed by awareness?
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Which area of the brain is primarily involved in executive functions such as planning and decision making?
Which area of the brain is primarily involved in executive functions such as planning and decision making?
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What do the six extrinsic eye muscles allow for?
What do the six extrinsic eye muscles allow for?
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Where are the frontal eye fields located?
Where are the frontal eye fields located?
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Which function is NOT associated with the prefrontal cortex?
Which function is NOT associated with the prefrontal cortex?
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What is the role of the superior colliculi?
What is the role of the superior colliculi?
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Which muscle is NOT one of the six extrinsic eye muscles?
Which muscle is NOT one of the six extrinsic eye muscles?
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What is involved in the mediating of awareness?
What is involved in the mediating of awareness?
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Flashcards
Macrophages
Macrophages
Cells that digest cellular debris in the nervous system after injury.
Schwann cells
Schwann cells
Glial cells that support nerve regeneration by forming a tubular structure after injury.
Retrograde changes
Retrograde changes
Changes at the injured end of an axon affecting its function, extending to the next node of Ranvier.
Axonal regeneration rate
Axonal regeneration rate
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Location of injury
Location of injury
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Type of injury
Type of injury
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Glial scar formation
Glial scar formation
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Olfactory nerve function
Olfactory nerve function
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Frontal Lobe
Frontal Lobe
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Prefrontal Area Functions
Prefrontal Area Functions
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Premotor Area
Premotor Area
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Primary Motor Area
Primary Motor Area
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Broca's Area
Broca's Area
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Homunculus
Homunculus
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Parietal Lobe
Parietal Lobe
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Wernicke Area
Wernicke Area
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Afferent Nerves
Afferent Nerves
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Efferent Nerves
Efferent Nerves
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Astrocytes
Astrocytes
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Oligodendrocytes
Oligodendrocytes
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Chromatolysis
Chromatolysis
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Wallerian Degeneration
Wallerian Degeneration
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Awareness
Awareness
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Cognitive functions
Cognitive functions
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Executive attention networks
Executive attention networks
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Prefrontal cortex
Prefrontal cortex
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Goal-oriented behavior
Goal-oriented behavior
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Extrinsic eye muscles
Extrinsic eye muscles
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Frontal eye fields
Frontal eye fields
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Superior colliculi
Superior colliculi
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Red Nucleus
Red Nucleus
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Substantia Nigra
Substantia Nigra
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Cerebral Peduncles
Cerebral Peduncles
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Cerebellum
Cerebellum
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Aqueduct of Sylvius
Aqueduct of Sylvius
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Pons
Pons
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Motor Pathway
Motor Pathway
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Dopaminergic Neurons
Dopaminergic Neurons
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Ocular movement tracking
Ocular movement tracking
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Cranial nerves involved
Cranial nerves involved
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Primary visual cortex
Primary visual cortex
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Midbrain functions
Midbrain functions
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Corpora Quadrigemina
Corpora Quadrigemina
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Study Notes
Afferent and Efferent Nerves
- Afferent nerves carry information toward organs or parts.
- Efferent nerves carry information away from organs or parts.
Neuron Structure
- Unipolar neurons: Single axon and dendrite
- Pseudounipolar neurons: Single axon that branches into two processes (one that goes to the CNS, one to a sensory receptor)
- Bipolar neurons: Have one axon and one dendrite
- Multipolar neurons: Multiple dendrites and one axon
Support Cells of the Nervous System
- Astrocytes: Form specialized contact, provide rapid transport, and are part of the blood-brain barrier.
- Oligodendroglia: Formation of myelin sheath (CNS).
- Microglia: Remove cellular debris (phagocytic).
- Ependymal cells: Line ventricles and choroid plexuses (CSF production)
- Schwann cells: Formation of myelin sheath (PNS)
- Satellite glial cells: Surround neuron cell bodies, providing protection and promote cellular communication.
CNS Regeneration
- Mature neurons typically do not regenerate.
- Myelinated fibers in the PNS can often repair.
- Regeneration involves axonal reaction, removal of damaged tissue and Schwann cell regeneration.
Nerve Regeneration
- Speed and success depend on the location and type of injury (e.g., crush vs. cut).
- Peripheral nerve injuries close to the spinal cord recover more slowly due to long distance.
- Regenerating nerve tissues are guided by Schwann cells.
Three Major Divisions of the Brain
- Forebrain (prosencephalon): Includes telencephalon and diencephalon (thalamus and hypothalamus).
- Midbrain (mesencephalon): located between the forebrain and hindbrain.
- Hindbrain (rhombencephalon): Includes metencephalon (pons and cerebellum) and myelencephalon (medulla oblongata).
Major Brain Structures
- Cerebrum: Includes hemispheres, cerebral cortex, basal ganglia and rhinencephalon.
- Cerebellum: Coordinates movement.
- Brainstem: Includes midbrain, pons, and medulla oblongata; involved in relaying information and controlling vital functions.
- Spinal cord: Pathway for nerve impulses between the brain and the body; connects with the brainstem.
Other Key Concepts
- Cranial nerves: 12 pairs of nerves from the brain, each with specific functions (sensory, motor, or mixed) and listed by number.
- CSF (Cerebrospinal fluid): Produced by the choroid plexus; cushions and supports the brain and spinal cord. -Arachnoid villi: Reabsorb the CSF back into the blood circulation via a pressure gradient.
- Blood supply to the brain: Vertebral and internal carotid arteries form the cerebral arterial circle of Willis; ensures adequate blood supply.
- CSF circulation: Produced in the ventricles, travels to the subarachnoid space, and reabsorbed into the blood circulation.
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Description
Test your understanding of key concepts related to brain regions, their functions, and the role of glial cells in the central nervous system. This quiz covers topics including Brodmann areas, astrocytes, and myelin production. It's essential for students of neuroscience or anyone interested in neuroanatomy.