Cells And NS Flashcards
Ependymal cells
Line the ventricles of the brain and produce cerebrospinal fluid, which physically supports the brain and serves as a shock absorber
Microglia
Phagocyte cells that ingest and break down waste products and pathogens in the central nervous system
Oligodendrocytes (CNS) Schwann cells (PNS)
Produce myelin around axons
Cell bodies of neurons of the same type within a nerve cluster in ________ in the peripheral nervous system
Ganglia
Cell bodies of neurons of the same type within a tract cluster in ________ in the central nervous system
Nuclei
Neuralgia or glial cells
Other cells with the nervous system In Addition to neurons
Sodium potassium pump
3 sodium ions out of the cell for every 2 potassium ions pimped in
Difference between nerves and tracts
Nerves may carry more than one type of information; tracts can only carry on type of information
Sensory neurons are ______ and enter the spinal cord on the _____ side
Afferent ; dorsal
Motor neurons are ______ and enter the spinal cord on the _____ side
Efferent ; ventral
Parasympathetic system
Rest and digest
Sympathetic system
Fight or flight
Neurotransmitter used in the ganglia of both the sympathetic and parasympathetic nervous system
Acetylcholine
Neural structure that ribosomes are primarily located in
Soma
Autoimmune disease attacks the voltage gated calcium channels in the nerve terminal. What is a likely symptom of this condition?
Flaccid paralysis (inability to contract the muscles)
A neuron only fires an action potential if multiple presynaptic cells release neurotransmitter onto the dendrites of the neuron. This is an example of
Summation
Astrocytes
Nourish neurons and form blood brain barrier, which controls the transmission of solutes from the bloodstream into nervous tissue
