Flashcards in Altered Neuronal Transmission Deck (50)
It provide neurons with metabolic support and protection
is the fundamental unit of the nervous system; it has highly specialized functions in impulse transmission
The nervous system is composed of:
▫️CNS (brain and spinal chord)
▫️PNS (spinal and cranial nerves; somatic and autonomic [SNS and PNS] nervous system)
Nervous tissue of the CNS is composed of both:
▫️ white and gray matter
It provides protective and metabolic functions in the CNS:
▫️meningis (dura, arachnoid, pila)
The spinal nerves are categorized based on their relationship with spinal vertebrae:
▫️cervical, thoracic, lumbar, sacral
Autonomic functions are carried out by:
▫️SNS and PNS
contributes to disability and is the basis for a variety of neurologic disorders.
the most common cause of injury to the nervous system, leading to neurologic impairment because of brain, spinal cord, or peripheral nerve injury.
It may represent primary or secondary causes of neurologic impairment
is a group of disorders resulting from damage to upper motor neurons with symptoms appearing during the first few years of life.
supporting cell that provide structural support and regulate gases and metabolites in interstitial fluid. Blood brain barrier
Supporting cells in __ (CNS) and ___ (PNS) Myelination
supporting cells for phagocytosis
supporting cells that line ventricular system to produce, monitor, and circulate CSF
supporting cells for structural support. Help to support cell body they surround it like a helmet.
in the spinal cord, ____ - efferent motor neurons leaving cord
in the Spinal Cord, ____ - sensory neurons receiving afferent impulses goes in
What are the CNS protection?
🔺capillaries, circle of Willis, blood brain barrier
▫️cerebrospinal fluid (CSF)
🔺cushion, provision of nutrients
Peripheral Nervous System Organization?
🔺motor and sensory impulses between the CNS and the periphery (cranial nerves and spinal nerves)
▫️Autonomic (SNS and PNS)
Mechanism of Neuronal Injury:
Damage to neurons results from the following processes:
is a type of neuron injury: neuronal swelling causing NT death
a type of neuron injury: decrease in size (could be from dehydration or lack of O2 where shrinking occurs to reduce workload)
a type of neuron injury: phagocytosis and inflammatory responses caused by a dead neuron damaging neighboring cells ➡️ use of microglial cells
type of injury to neuron: distinct structures formed within nucleus or cytoplasm ex. lead, proteins
CNS cellular response to injury:
___ increased number of astrocytes causing glial scarring affecting sorround neuronal functioning
is a “nodule-like” clustering of microglial cells around dead/dying neuronal cells