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Anatomy chpt 12

what are neurons nerve cells
communication, information processing, control are all functions of? neurons
phagocytosis, provide supportive framework for tissue, regulation composition of interstitual fluid, are all functions of ? neuroglia
what are supporting cells glial cells
what are glial cells? neuroglia
what are the two neural tissue cell types neurons and neuroglia
what are the two anatomical division of nervous systems? CNS and PNS
The spinal cord and the brain are located in the? Central nervous system
All neural tissue outside the CNS are located in the Peripheral nervous system
integrate, process, and coordinate sensory data and motor commands are all functions of Central nervous system
Deliver sensory info to the CNS, carry motor commands to peripheray, cranial vs spinal nerves are all functions of Peripheral nervous systems
What are the two function division of PNS Afferent division and Efferent division
what brings information to the CNS Afferent division
What takes information from the CNS Efferent division
Where does the information come from Receptors
what are the sensory structure that detects changes in the environment Receptors
Receptors respond to stimuli
What responds by doing something Effectors
What are the divisions of Efferent Somatic Nervous system and Autonomic Nervous system
What are the four structual classification on Neurons? Anaxonic neuron, Bipolar neuron, Unipolar neuron, and Multipolar neuron.
The Anaxonic neuron consist of Brain and sense organs
The Bipolar neuron is Only in sense organs (rare)
The Unipolar neuron consist of most sensory neurons
The Multipolar neuron consist of All motor neurons that control skeletal muscles
Anaxonic neurons have more than two processes, but axons cannot be distinguished from dendrites.
Bipolar neurons have two processes separated by the cell body.
Unipolar neurons have a single elongate process, with the cell body situated off t the side.
Multipoloar neurons have more than two processes, there is a single axon and multiple dendrites.
What are the 4 functional classifications of Neurons Sensory neurons, Sensory receptors, Motor Neurons, and interneurons.
Sensory Neurons are also known as Afferent Neurons
What delivers info to CNS from sensory receptors? Sensory Neurons
collection of neural cell bodies in the PNS Sensory ganglia
Two types of sensory Neurons Somatic sensory Neuron and Visceral sensory neuron
what monitors the outside somatic sensory neurons
What monitors internal visceral sensory neurons
Process of specialized sensory neurons or cells monitored by sensory neurons Sensory Receptors
Three types of sensory receptors Interoreceptors, Exterorecepters, and Proprioreceptors.
What monitors position and movement of skeletal muscles and joints Proprioreceptors
Exteroreceptors monitor external environment
Interoreceptors monitor systems
Motor Neurons are also called Efferent Neurons
Motor Neurons tatkes information from the CNS to PNS
What are the two types of Motor neurons Somatic Motor Neurons and Visceral Motor Neurons
What innervate skeletal muscles Somatic motor neuron
Somatic motor neuron Axon extends to the muscle
cell body in the CNS Somatic Motor Neuron
Somatic Motor Neuron Consciously controlled
Visceral Motor Neuron Innervate all peripheral effectors except skeletal muscles
Visceral motor neuron signal must be relayed across a synapse
visceral motor neuronsin central nervous system send out axons to second set of visceral motor neurons in peripheral autonomic ganglia
visceral motor neuron consist of two fibers preganglionic fibers and postganglionic fibers
Interneurons also called assciation neurons
interneurons outnumber all other neurons combined
most interneurons are located in the brain and spinal cord, some ar ein the autonomic ganglia
distribution of sensory information and coordinate motor ativity are all functions of Interneurons
neuroglia are found in central nervous system and peripheral nervous system
central nervous system contains Ependymalcells, Astrocytes, Oligodendorcytes, and Microglia
Peripheral nervous system contains Satellite cells and Schwann cells
Ependymal cells line ventricles (brain) and central canal (spinal cord).
What assist in producing, circulatin, and monitoring cerebrospinal fluid Ependymal cells
Astrocytes Maintain blood-brain barier;
what provides structural support; regulate ion, nutrient, and dissolved gas concetrations; absorb and recycle neurotransmitters; form scar tissue after injury Astrocytes
Oligodendrocytes Myelinate CNS axons.
what provides structural framework Oligodendrocytes
Microglia Removes cell debris, waste, and pathogens by phagocytosis
Satellite cells surround neuron cell bodies in ganglia
what regulates oxygen,carbon dioxide, nutrient, and neurotransmitter levels around neurons in ganglia Satellite cells
Schwann cells surround all axons in PNS; responsible for myelination of peripheral axons;
What particiaptes in repair process after injury Schwann cells
Ependymal cells A fluid filled central passageway extends along the longitudinal axis of the spinal cord and brain.
Created by: slaroche



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